/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:33:20,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:33:20,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 21:33:20,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:33:20,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:33:20,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:33:20,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:33:20,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:33:20,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:33:20,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:33:20,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:33:20,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:33:20,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:33:20,884 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:20,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:20,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:20,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:33:20,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:33:21,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:33:21,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:33:21,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:33:21,113 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:33:21,115 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:33:21,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2025-04-13 21:33:22,467 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7ba70e0f/baaa4cafe84548f5bbb673d1f909c045/FLAG817fcb179 [2025-04-13 21:33:22,740 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:33:22,741 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2025-04-13 21:33:22,760 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7ba70e0f/baaa4cafe84548f5bbb673d1f909c045/FLAG817fcb179 [2025-04-13 21:33:23,469 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7ba70e0f/baaa4cafe84548f5bbb673d1f909c045 [2025-04-13 21:33:23,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:33:23,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:33:23,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:23,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:33:23,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:33:23,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:23,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b17d3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23, skipping insertion in model container [2025-04-13 21:33:23,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:23,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:33:23,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2025-04-13 21:33:23,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:23,841 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:33:23,881 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2025-04-13 21:33:23,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:23,959 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:33:23,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23 WrapperNode [2025-04-13 21:33:23,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:23,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:23,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:33:23,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:33:23,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:23,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,035 INFO L138 Inliner]: procedures = 277, calls = 430, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 539 [2025-04-13 21:33:24,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:24,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:33:24,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:33:24,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:33:24,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,083 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2025-04-13 21:33:24,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:33:24,116 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:33:24,116 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:33:24,116 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:33:24,117 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (1/1) ... [2025-04-13 21:33:24,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:24,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 21:33:24,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 21:33:24,162 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:33:24,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:33:24,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 21:33:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:33:24,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:33:24,164 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:33:24,270 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:33:24,271 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:33:24,852 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2025-04-13 21:33:24,852 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2025-04-13 21:33:24,852 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2025-04-13 21:33:24,853 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:33:24,853 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:33:24,854 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:33:28,162 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:28,163 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:28,165 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:33:28,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:28 BoogieIcfgContainer [2025-04-13 21:33:28,167 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:33:28,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:33:28,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:33:28,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:33:28,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:33:23" (1/3) ... [2025-04-13 21:33:28,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0db097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:28, skipping insertion in model container [2025-04-13 21:33:28,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:23" (2/3) ... [2025-04-13 21:33:28,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0db097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:28, skipping insertion in model container [2025-04-13 21:33:28,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:28" (3/3) ... [2025-04-13 21:33:28,174 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2025-04-13 21:33:28,186 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:33:28,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 23 locations, 24 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-13 21:33:28,188 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:33:28,245 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:33:28,268 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 66 flow [2025-04-13 21:33:28,288 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:28,306 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:33:28,314 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;@16509657, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:33:28,314 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 21:33:28,316 INFO L278 IsEmpty]: Start isEmpty. Operand has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:28,320 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-13 21:33:28,320 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:28,320 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 21:33:28,320 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:28,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1090105348, now seen corresponding path program 1 times [2025-04-13 21:33:28,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:28,330 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626626951] [2025-04-13 21:33:28,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:28,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 21:33:28,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 21:33:28,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:28,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:28,870 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626626951] [2025-04-13 21:33:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626626951] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:28,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:33:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597724465] [2025-04-13 21:33:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:28,874 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:28,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:28,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:28,892 INFO L87 Difference]: Start difference. First operand has 118 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 117 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:28,974 INFO L93 Difference]: Finished difference Result 200 states and 488 transitions. [2025-04-13 21:33:28,976 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:28,978 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-04-13 21:33:28,978 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:28,986 INFO L225 Difference]: With dead ends: 200 [2025-04-13 21:33:28,986 INFO L226 Difference]: Without dead ends: 144 [2025-04-13 21:33:28,990 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:28,992 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:28,993 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-04-13 21:33:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-04-13 21:33:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 141 states have (on average 2.4468085106382977) internal successors, (345), 143 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 345 transitions. [2025-04-13 21:33:29,031 INFO L79 Accepts]: Start accepts. Automaton has 144 states and 345 transitions. Word has length 5 [2025-04-13 21:33:29,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:29,031 INFO L485 AbstractCegarLoop]: Abstraction has 144 states and 345 transitions. [2025-04-13 21:33:29,032 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:29,032 INFO L278 IsEmpty]: Start isEmpty. Operand 144 states and 345 transitions. [2025-04-13 21:33:29,032 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-13 21:33:29,032 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:29,032 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:29,032 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:33:29,032 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:29,033 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash -822168217, now seen corresponding path program 1 times [2025-04-13 21:33:29,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:29,033 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834046004] [2025-04-13 21:33:29,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:29,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:29,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:29,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:29,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:29,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:29,297 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834046004] [2025-04-13 21:33:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834046004] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:29,297 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918115] [2025-04-13 21:33:29,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:29,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:29,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:33:29,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 21:33:29,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:29,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:29,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:29,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:29,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 21:33:29,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:29,539 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:29,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918115] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:29,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:29,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-04-13 21:33:29,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069110224] [2025-04-13 21:33:29,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:29,602 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 21:33:29,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:29,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 21:33:29,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 21:33:29,698 INFO L87 Difference]: Start difference. First operand 144 states and 345 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:29,898 INFO L93 Difference]: Finished difference Result 561 states and 1392 transitions. [2025-04-13 21:33:29,898 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 21:33:29,898 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-13 21:33:29,898 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:29,902 INFO L225 Difference]: With dead ends: 561 [2025-04-13 21:33:29,902 INFO L226 Difference]: Without dead ends: 522 [2025-04-13 21:33:29,902 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:33:29,903 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:29,903 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:33:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2025-04-13 21:33:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 429. [2025-04-13 21:33:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 426 states have (on average 2.5539906103286385) internal successors, (1088), 428 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1088 transitions. [2025-04-13 21:33:29,929 INFO L79 Accepts]: Start accepts. Automaton has 429 states and 1088 transitions. Word has length 9 [2025-04-13 21:33:29,930 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:29,930 INFO L485 AbstractCegarLoop]: Abstraction has 429 states and 1088 transitions. [2025-04-13 21:33:29,930 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:29,930 INFO L278 IsEmpty]: Start isEmpty. Operand 429 states and 1088 transitions. [2025-04-13 21:33:29,930 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 21:33:29,930 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:29,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:29,940 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 21:33:30,135 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:30,135 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:30,135 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 265376978, now seen corresponding path program 1 times [2025-04-13 21:33:30,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:30,136 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233701315] [2025-04-13 21:33:30,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:30,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:30,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 21:33:30,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 21:33:30,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:30,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:30,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:30,350 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233701315] [2025-04-13 21:33:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233701315] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:30,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:33:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697537751] [2025-04-13 21:33:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:30,351 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:30,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:30,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:30,351 INFO L87 Difference]: Start difference. First operand 429 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:30,407 INFO L93 Difference]: Finished difference Result 639 states and 1647 transitions. [2025-04-13 21:33:30,409 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:30,409 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-04-13 21:33:30,409 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:30,411 INFO L225 Difference]: With dead ends: 639 [2025-04-13 21:33:30,411 INFO L226 Difference]: Without dead ends: 312 [2025-04-13 21:33:30,412 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:30,412 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:30,413 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 21:33:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-04-13 21:33:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 296. [2025-04-13 21:33:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 2.4315068493150687) internal successors, (710), 295 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 710 transitions. [2025-04-13 21:33:30,422 INFO L79 Accepts]: Start accepts. Automaton has 296 states and 710 transitions. Word has length 10 [2025-04-13 21:33:30,422 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:30,423 INFO L485 AbstractCegarLoop]: Abstraction has 296 states and 710 transitions. [2025-04-13 21:33:30,423 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:30,423 INFO L278 IsEmpty]: Start isEmpty. Operand 296 states and 710 transitions. [2025-04-13 21:33:30,423 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:33:30,423 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:30,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:30,423 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 21:33:30,423 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:30,424 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1085069054, now seen corresponding path program 1 times [2025-04-13 21:33:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:30,424 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89440092] [2025-04-13 21:33:30,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:30,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:33:30,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:33:30,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:30,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:31,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:31,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89440092] [2025-04-13 21:33:31,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89440092] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:31,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:31,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 21:33:31,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412061336] [2025-04-13 21:33:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:31,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:33:31,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:31,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:33:31,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:33:31,225 INFO L87 Difference]: Start difference. First operand 296 states and 710 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:31,302 INFO L93 Difference]: Finished difference Result 382 states and 900 transitions. [2025-04-13 21:33:31,303 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 21:33:31,303 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-04-13 21:33:31,304 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:31,306 INFO L225 Difference]: With dead ends: 382 [2025-04-13 21:33:31,306 INFO L226 Difference]: Without dead ends: 361 [2025-04-13 21:33:31,306 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:33:31,307 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:31,307 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-04-13 21:33:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 315. [2025-04-13 21:33:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 311 states have (on average 2.446945337620579) internal successors, (761), 314 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 761 transitions. [2025-04-13 21:33:31,327 INFO L79 Accepts]: Start accepts. Automaton has 315 states and 761 transitions. Word has length 11 [2025-04-13 21:33:31,327 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:31,327 INFO L485 AbstractCegarLoop]: Abstraction has 315 states and 761 transitions. [2025-04-13 21:33:31,328 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:31,328 INFO L278 IsEmpty]: Start isEmpty. Operand 315 states and 761 transitions. [2025-04-13 21:33:31,328 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:33:31,328 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:31,328 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:31,328 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 21:33:31,329 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:31,329 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 864732141, now seen corresponding path program 1 times [2025-04-13 21:33:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:31,329 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430690558] [2025-04-13 21:33:31,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:31,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:31,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:31,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:31,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:32,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:32,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430690558] [2025-04-13 21:33:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430690558] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:32,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334417570] [2025-04-13 21:33:32,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:32,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:32,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:32,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:33:32,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 21:33:32,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:32,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:32,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:32,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:32,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 21:33:32,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:32,279 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2025-04-13 21:33:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:33:32,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 21:33:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334417570] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:32,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 21:33:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2025-04-13 21:33:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787574208] [2025-04-13 21:33:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:32,358 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:32,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:32,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:33:32,359 INFO L87 Difference]: Start difference. First operand 315 states and 761 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:32,419 INFO L93 Difference]: Finished difference Result 363 states and 869 transitions. [2025-04-13 21:33:32,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:32,419 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 21:33:32,420 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:32,422 INFO L225 Difference]: With dead ends: 363 [2025-04-13 21:33:32,422 INFO L226 Difference]: Without dead ends: 347 [2025-04-13 21:33:32,422 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:33:32,423 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:32,423 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-04-13 21:33:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 299. [2025-04-13 21:33:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 295 states have (on average 2.4237288135593222) internal successors, (715), 298 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 715 transitions. [2025-04-13 21:33:32,432 INFO L79 Accepts]: Start accepts. Automaton has 299 states and 715 transitions. Word has length 15 [2025-04-13 21:33:32,432 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:32,433 INFO L485 AbstractCegarLoop]: Abstraction has 299 states and 715 transitions. [2025-04-13 21:33:32,433 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:32,433 INFO L278 IsEmpty]: Start isEmpty. Operand 299 states and 715 transitions. [2025-04-13 21:33:32,434 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 21:33:32,434 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:32,434 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:32,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:32,634 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:32,635 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:32,635 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2097124352, now seen corresponding path program 1 times [2025-04-13 21:33:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:32,635 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913216641] [2025-04-13 21:33:32,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:32,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:32,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:32,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:32,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:33,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913216641] [2025-04-13 21:33:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913216641] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:33,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081993176] [2025-04-13 21:33:33,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:33,062 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 21:33:33,069 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 21:33:33,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:33,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:33,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:33,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:33,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 21:33:33,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:33,282 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:33,309 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:33,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:33:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081993176] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 21:33:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 10 [2025-04-13 21:33:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222710870] [2025-04-13 21:33:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:33,649 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:33:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:33,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:33:33,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-04-13 21:33:33,650 INFO L87 Difference]: Start difference. First operand 299 states and 715 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:33,742 INFO L93 Difference]: Finished difference Result 403 states and 960 transitions. [2025-04-13 21:33:33,742 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:33:33,742 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 19 [2025-04-13 21:33:33,743 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:33,745 INFO L225 Difference]: With dead ends: 403 [2025-04-13 21:33:33,745 INFO L226 Difference]: Without dead ends: 397 [2025-04-13 21:33:33,745 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2025-04-13 21:33:33,745 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:33,746 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2025-04-13 21:33:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 301. [2025-04-13 21:33:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 297 states have (on average 2.451178451178451) internal successors, (728), 300 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 728 transitions. [2025-04-13 21:33:33,755 INFO L79 Accepts]: Start accepts. Automaton has 301 states and 728 transitions. Word has length 19 [2025-04-13 21:33:33,755 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:33,755 INFO L485 AbstractCegarLoop]: Abstraction has 301 states and 728 transitions. [2025-04-13 21:33:33,755 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:33,755 INFO L278 IsEmpty]: Start isEmpty. Operand 301 states and 728 transitions. [2025-04-13 21:33:33,756 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 21:33:33,756 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:33,756 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:33,766 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 21:33:33,957 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:33,957 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:33,957 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 698707664, now seen corresponding path program 1 times [2025-04-13 21:33:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:33,958 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735401060] [2025-04-13 21:33:33,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:33,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:34,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:34,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:34,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:34,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:34,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735401060] [2025-04-13 21:33:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735401060] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:34,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133125249] [2025-04-13 21:33:34,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:34,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:34,593 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 21:33:34,594 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 21:33:34,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:34,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:34,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:34,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:34,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 21:33:34,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:34,786 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 21:33:34,832 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:33:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:34,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133125249] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:35,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2025-04-13 21:33:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250960993] [2025-04-13 21:33:35,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:35,258 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 21:33:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:35,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 21:33:35,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:33:35,259 INFO L87 Difference]: Start difference. First operand 301 states and 728 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:35,610 INFO L93 Difference]: Finished difference Result 662 states and 1580 transitions. [2025-04-13 21:33:35,610 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 21:33:35,611 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 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 19 [2025-04-13 21:33:35,611 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:35,614 INFO L225 Difference]: With dead ends: 662 [2025-04-13 21:33:35,614 INFO L226 Difference]: Without dead ends: 602 [2025-04-13 21:33:35,616 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2025-04-13 21:33:35,617 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:35,617 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 21:33:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-04-13 21:33:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 409. [2025-04-13 21:33:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 405 states have (on average 2.4790123456790125) internal successors, (1004), 408 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1004 transitions. [2025-04-13 21:33:35,632 INFO L79 Accepts]: Start accepts. Automaton has 409 states and 1004 transitions. Word has length 19 [2025-04-13 21:33:35,632 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:35,632 INFO L485 AbstractCegarLoop]: Abstraction has 409 states and 1004 transitions. [2025-04-13 21:33:35,633 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:35,633 INFO L278 IsEmpty]: Start isEmpty. Operand 409 states and 1004 transitions. [2025-04-13 21:33:35,633 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 21:33:35,633 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:35,633 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-04-13 21:33:35,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 21:33:35,838 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:35,838 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:35,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:35,839 INFO L85 PathProgramCache]: Analyzing trace with hash -26981232, now seen corresponding path program 2 times [2025-04-13 21:33:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:35,839 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512550913] [2025-04-13 21:33:35,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:35,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:35,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 21:33:35,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:33:35,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:35,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:36,070 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512550913] [2025-04-13 21:33:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512550913] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:36,070 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132264645] [2025-04-13 21:33:36,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:36,072 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 21:33:36,074 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 21:33:36,146 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 21:33:36,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:33:36,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:36,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:36,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:33:36,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:36,256 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:36,275 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:36,290 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:36,307 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:36,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132264645] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:36,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:36,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2025-04-13 21:33:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288401793] [2025-04-13 21:33:36,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:36,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 21:33:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:36,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 21:33:36,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2025-04-13 21:33:36,378 INFO L87 Difference]: Start difference. First operand 409 states and 1004 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:36,890 INFO L93 Difference]: Finished difference Result 2049 states and 5061 transitions. [2025-04-13 21:33:36,890 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 21:33:36,891 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 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 21 [2025-04-13 21:33:36,891 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:36,899 INFO L225 Difference]: With dead ends: 2049 [2025-04-13 21:33:36,899 INFO L226 Difference]: Without dead ends: 2039 [2025-04-13 21:33:36,900 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2025-04-13 21:33:36,900 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 434 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:36,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 0 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 21:33:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2025-04-13 21:33:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1343. [2025-04-13 21:33:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1339 states have (on average 2.6639283047050037) internal successors, (3567), 1342 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 3567 transitions. [2025-04-13 21:33:36,944 INFO L79 Accepts]: Start accepts. Automaton has 1343 states and 3567 transitions. Word has length 21 [2025-04-13 21:33:36,944 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:36,944 INFO L485 AbstractCegarLoop]: Abstraction has 1343 states and 3567 transitions. [2025-04-13 21:33:36,944 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:36,944 INFO L278 IsEmpty]: Start isEmpty. Operand 1343 states and 3567 transitions. [2025-04-13 21:33:36,945 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:33:36,945 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:36,945 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:36,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 21:33:37,146 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:37,146 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:37,146 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1100250410, now seen corresponding path program 2 times [2025-04-13 21:33:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:37,147 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500430260] [2025-04-13 21:33:37,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:37,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:37,161 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:33:37,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:33:37,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:37,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:38,053 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500430260] [2025-04-13 21:33:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500430260] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:38,053 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190551144] [2025-04-13 21:33:38,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:38,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:38,055 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 21:33:38,057 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 21:33:38,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:33:38,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:33:38,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:38,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:38,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 21:33:38,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:38,267 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 21:33:38,333 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:33:38,333 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-04-13 21:33:38,408 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 19 [2025-04-13 21:33:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:38,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190551144] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:39,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-04-13 21:33:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031786641] [2025-04-13 21:33:39,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:39,341 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 21:33:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:39,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 21:33:39,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2025-04-13 21:33:39,342 INFO L87 Difference]: Start difference. First operand 1343 states and 3567 transitions. Second operand has 19 states, 18 states have (on average 4.5) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:40,554 INFO L93 Difference]: Finished difference Result 4121 states and 10466 transitions. [2025-04-13 21:33:40,555 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 21:33:40,555 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.5) internal successors, (81), 19 states have internal predecessors, (81), 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 27 [2025-04-13 21:33:40,555 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:40,571 INFO L225 Difference]: With dead ends: 4121 [2025-04-13 21:33:40,572 INFO L226 Difference]: Without dead ends: 4040 [2025-04-13 21:33:40,573 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=370, Invalid=1036, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 21:33:40,575 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 428 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:40,575 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 0 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 21:33:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2025-04-13 21:33:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2151. [2025-04-13 21:33:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2147 states have (on average 2.768048439683279) internal successors, (5943), 2150 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 5943 transitions. [2025-04-13 21:33:40,644 INFO L79 Accepts]: Start accepts. Automaton has 2151 states and 5943 transitions. Word has length 27 [2025-04-13 21:33:40,647 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:40,647 INFO L485 AbstractCegarLoop]: Abstraction has 2151 states and 5943 transitions. [2025-04-13 21:33:40,647 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.5) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:40,647 INFO L278 IsEmpty]: Start isEmpty. Operand 2151 states and 5943 transitions. [2025-04-13 21:33:40,649 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 21:33:40,649 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:40,649 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:40,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:40,849 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:40,850 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:40,850 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:40,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1582733022, now seen corresponding path program 3 times [2025-04-13 21:33:40,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:40,850 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462847513] [2025-04-13 21:33:40,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:33:40,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:40,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-04-13 21:33:41,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:33:41,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:33:41,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:33:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:42,162 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462847513] [2025-04-13 21:33:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462847513] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:42,162 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591221076] [2025-04-13 21:33:42,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:33:42,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:42,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:42,164 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 21:33:42,166 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 21:33:42,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-04-13 21:33:42,453 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:33:42,453 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:33:42,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:42,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 21:33:42,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:42,500 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-04-13 21:33:42,524 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:33:42,560 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:33:42,603 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:33:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:42,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:43,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591221076] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:43,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2025-04-13 21:33:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866980900] [2025-04-13 21:33:43,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:43,507 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 21:33:43,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:43,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 21:33:43,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2025-04-13 21:33:43,508 INFO L87 Difference]: Start difference. First operand 2151 states and 5943 transitions. Second operand has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:44,496 INFO L93 Difference]: Finished difference Result 6884 states and 18666 transitions. [2025-04-13 21:33:44,497 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 21:33:44,497 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-04-13 21:33:44,497 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:44,526 INFO L225 Difference]: With dead ends: 6884 [2025-04-13 21:33:44,526 INFO L226 Difference]: Without dead ends: 6716 [2025-04-13 21:33:44,531 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 21:33:44,531 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 360 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:44,531 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 0 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 21:33:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2025-04-13 21:33:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 4211. [2025-04-13 21:33:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4207 states have (on average 2.7570715474209653) internal successors, (11599), 4210 states have internal predecessors, (11599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 11599 transitions. [2025-04-13 21:33:44,647 INFO L79 Accepts]: Start accepts. Automaton has 4211 states and 11599 transitions. Word has length 35 [2025-04-13 21:33:44,647 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:44,647 INFO L485 AbstractCegarLoop]: Abstraction has 4211 states and 11599 transitions. [2025-04-13 21:33:44,647 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:44,647 INFO L278 IsEmpty]: Start isEmpty. Operand 4211 states and 11599 transitions. [2025-04-13 21:33:44,651 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-04-13 21:33:44,651 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:44,651 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:44,661 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 21:33:44,851 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:44,852 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:44,852 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2079784367, now seen corresponding path program 1 times [2025-04-13 21:33:44,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:44,852 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519190179] [2025-04-13 21:33:44,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:44,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:44,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-13 21:33:44,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-13 21:33:44,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:44,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:45,383 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519190179] [2025-04-13 21:33:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519190179] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:45,383 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718082700] [2025-04-13 21:33:45,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:45,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:45,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:45,386 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 21:33:45,387 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 21:33:45,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-13 21:33:45,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-13 21:33:45,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:45,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:45,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 21:33:45,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:45,593 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:45,608 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:45,621 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:45,639 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:45,657 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:45,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-13 21:33:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718082700] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:46,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 22 [2025-04-13 21:33:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854753387] [2025-04-13 21:33:46,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:46,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 21:33:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:46,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 21:33:46,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-04-13 21:33:46,167 INFO L87 Difference]: Start difference. First operand 4211 states and 11599 transitions. Second operand has 23 states, 22 states have (on average 4.909090909090909) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:46,904 INFO L93 Difference]: Finished difference Result 10799 states and 29314 transitions. [2025-04-13 21:33:46,905 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 21:33:46,905 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.909090909090909) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-04-13 21:33:46,905 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:46,940 INFO L225 Difference]: With dead ends: 10799 [2025-04-13 21:33:46,940 INFO L226 Difference]: Without dead ends: 10576 [2025-04-13 21:33:46,945 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=308, Invalid=562, Unknown=0, NotChecked=0, Total=870 [2025-04-13 21:33:46,946 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 359 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:46,946 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 0 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 21:33:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2025-04-13 21:33:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 2391. [2025-04-13 21:33:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 2387 states have (on average 2.7071638039379975) internal successors, (6462), 2390 states have internal predecessors, (6462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 6462 transitions. [2025-04-13 21:33:47,057 INFO L79 Accepts]: Start accepts. Automaton has 2391 states and 6462 transitions. Word has length 39 [2025-04-13 21:33:47,058 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:47,058 INFO L485 AbstractCegarLoop]: Abstraction has 2391 states and 6462 transitions. [2025-04-13 21:33:47,058 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.909090909090909) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:47,058 INFO L278 IsEmpty]: Start isEmpty. Operand 2391 states and 6462 transitions. [2025-04-13 21:33:47,060 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 21:33:47,060 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:47,060 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:47,069 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 21:33:47,260 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,SelfDestructingSolverStorable10 [2025-04-13 21:33:47,261 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:47,261 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2025408108, now seen corresponding path program 2 times [2025-04-13 21:33:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:47,261 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222618541] [2025-04-13 21:33:47,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:47,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:33:47,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:33:47,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:47,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:33:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:48,051 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222618541] [2025-04-13 21:33:48,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222618541] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:48,051 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602776664] [2025-04-13 21:33:48,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:48,053 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 21:33:48,054 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 21:33:48,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:33:48,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:33:48,333 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:48,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:48,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 21:33:48,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:48,374 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,396 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,414 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,439 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,459 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,482 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:33:48,737 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 21 [2025-04-13 21:33:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:48,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-04-13 21:33:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602776664] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:48,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 5] total 22 [2025-04-13 21:33:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754213673] [2025-04-13 21:33:48,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:48,848 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 21:33:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:48,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 21:33:48,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2025-04-13 21:33:48,849 INFO L87 Difference]: Start difference. First operand 2391 states and 6462 transitions. Second operand has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:49,503 INFO L93 Difference]: Finished difference Result 7070 states and 18668 transitions. [2025-04-13 21:33:49,503 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 21:33:49,504 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 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 43 [2025-04-13 21:33:49,504 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:49,519 INFO L225 Difference]: With dead ends: 7070 [2025-04-13 21:33:49,519 INFO L226 Difference]: Without dead ends: 6973 [2025-04-13 21:33:49,521 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2025-04-13 21:33:49,521 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:49,521 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 21:33:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2025-04-13 21:33:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 3205. [2025-04-13 21:33:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3205 states, 3201 states have (on average 2.7488284910965324) internal successors, (8799), 3204 states have internal predecessors, (8799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 8799 transitions. [2025-04-13 21:33:49,587 INFO L79 Accepts]: Start accepts. Automaton has 3205 states and 8799 transitions. Word has length 43 [2025-04-13 21:33:49,588 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:49,588 INFO L485 AbstractCegarLoop]: Abstraction has 3205 states and 8799 transitions. [2025-04-13 21:33:49,588 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:49,588 INFO L278 IsEmpty]: Start isEmpty. Operand 3205 states and 8799 transitions. [2025-04-13 21:33:49,590 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 21:33:49,590 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:49,590 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:49,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 21:33:49,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:49,790 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:49,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1175496478, now seen corresponding path program 4 times [2025-04-13 21:33:49,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:49,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099843313] [2025-04-13 21:33:49,791 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:33:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:49,810 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:33:49,906 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:33:49,906 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:33:49,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:51,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:51,507 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099843313] [2025-04-13 21:33:51,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099843313] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:51,507 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96724209] [2025-04-13 21:33:51,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:33:51,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:51,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:51,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:33:51,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 21:33:51,621 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:33:51,707 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:33:51,708 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:33:51,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:51,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 21:33:51,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:51,741 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 21:33:51,801 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:33:51,801 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-04-13 21:33:51,906 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 19 [2025-04-13 21:33:51,973 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 19 [2025-04-13 21:33:52,071 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 19 [2025-04-13 21:33:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:53,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:54,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96724209] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:54,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:54,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 27 [2025-04-13 21:33:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674205924] [2025-04-13 21:33:54,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:54,154 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 21:33:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:54,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 21:33:54,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-04-13 21:33:54,155 INFO L87 Difference]: Start difference. First operand 3205 states and 8799 transitions. Second operand has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 28 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:59,454 INFO L93 Difference]: Finished difference Result 13403 states and 34222 transitions. [2025-04-13 21:33:59,454 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 21:33:59,455 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 28 states have internal predecessors, (129), 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 43 [2025-04-13 21:33:59,455 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:59,489 INFO L225 Difference]: With dead ends: 13403 [2025-04-13 21:33:59,490 INFO L226 Difference]: Without dead ends: 12773 [2025-04-13 21:33:59,498 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1577, Invalid=5229, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 21:33:59,499 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 704 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:59,499 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 0 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 21:33:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2025-04-13 21:33:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 5115. [2025-04-13 21:33:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5111 states have (on average 2.859714341616122) internal successors, (14616), 5114 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 14616 transitions. [2025-04-13 21:33:59,644 INFO L79 Accepts]: Start accepts. Automaton has 5115 states and 14616 transitions. Word has length 43 [2025-04-13 21:33:59,644 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:59,644 INFO L485 AbstractCegarLoop]: Abstraction has 5115 states and 14616 transitions. [2025-04-13 21:33:59,644 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.777777777777778) internal successors, (129), 28 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:59,645 INFO L278 IsEmpty]: Start isEmpty. Operand 5115 states and 14616 transitions. [2025-04-13 21:33:59,647 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 21:33:59,647 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:59,647 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1] [2025-04-13 21:33:59,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 21:33:59,847 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-04-13 21:33:59,848 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:59,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -207070622, now seen corresponding path program 3 times [2025-04-13 21:33:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:59,848 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842077034] [2025-04-13 21:33:59,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:33:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:59,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-13 21:34:00,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 21:34:00,035 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-13 21:34:00,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:00,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:00,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842077034] [2025-04-13 21:34:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842077034] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:00,559 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509249030] [2025-04-13 21:34:00,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:00,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:00,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:00,561 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:34:00,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 21:34:00,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-13 21:34:01,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 21:34:01,106 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-13 21:34:01,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:01,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 21:34:01,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:01,132 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,156 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,173 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,193 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,212 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,234 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,253 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,277 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,301 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,325 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:01,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:01,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509249030] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:01,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:01,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2025-04-13 21:34:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286297777] [2025-04-13 21:34:01,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:01,493 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 21:34:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:01,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 21:34:01,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 21:34:01,494 INFO L87 Difference]: Start difference. First operand 5115 states and 14616 transitions. Second operand has 35 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:03,917 INFO L93 Difference]: Finished difference Result 49246 states and 142689 transitions. [2025-04-13 21:34:03,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-04-13 21:34:03,918 INFO L79 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 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 21:34:03,918 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:04,053 INFO L225 Difference]: With dead ends: 49246 [2025-04-13 21:34:04,053 INFO L226 Difference]: Without dead ends: 49115 [2025-04-13 21:34:04,081 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3441, Invalid=6261, Unknown=0, NotChecked=0, Total=9702 [2025-04-13 21:34:04,081 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 3145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:04,082 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 0 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 21:34:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49115 states. [2025-04-13 21:34:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49115 to 32723. [2025-04-13 21:34:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32723 states, 32719 states have (on average 2.961948714814022) internal successors, (96912), 32722 states have internal predecessors, (96912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32723 states to 32723 states and 96912 transitions. [2025-04-13 21:34:04,883 INFO L79 Accepts]: Start accepts. Automaton has 32723 states and 96912 transitions. Word has length 45 [2025-04-13 21:34:04,883 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:04,883 INFO L485 AbstractCegarLoop]: Abstraction has 32723 states and 96912 transitions. [2025-04-13 21:34:04,884 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 34 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:04,884 INFO L278 IsEmpty]: Start isEmpty. Operand 32723 states and 96912 transitions. [2025-04-13 21:34:04,886 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 21:34:04,886 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:04,887 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:04,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 21:34:05,087 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 21:34:05,087 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:05,088 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash 945363688, now seen corresponding path program 5 times [2025-04-13 21:34:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:05,088 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926617223] [2025-04-13 21:34:05,088 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:34:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:05,108 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 6 equivalence classes. [2025-04-13 21:34:05,277 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 21:34:05,277 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:34:05,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:07,431 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926617223] [2025-04-13 21:34:07,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926617223] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:07,431 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005208112] [2025-04-13 21:34:07,431 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:34:07,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:07,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:07,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:34:07,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 21:34:07,568 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 6 equivalence classes. [2025-04-13 21:34:07,807 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 21:34:07,807 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:34:07,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:07,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 21:34:07,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:07,834 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 21:34:07,865 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:34:07,894 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:34:07,927 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:34:07,957 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:34:07,989 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 14 [2025-04-13 21:34:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:08,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005208112] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:10,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 33 [2025-04-13 21:34:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057207361] [2025-04-13 21:34:10,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:10,004 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 21:34:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:10,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 21:34:10,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 21:34:10,005 INFO L87 Difference]: Start difference. First operand 32723 states and 96912 transitions. Second operand has 34 states, 33 states have (on average 4.636363636363637) internal successors, (153), 34 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:12,926 INFO L93 Difference]: Finished difference Result 51126 states and 148873 transitions. [2025-04-13 21:34:12,926 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 21:34:12,927 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.636363636363637) internal successors, (153), 34 states have internal predecessors, (153), 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 51 [2025-04-13 21:34:12,927 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:13,084 INFO L225 Difference]: With dead ends: 51126 [2025-04-13 21:34:13,085 INFO L226 Difference]: Without dead ends: 50736 [2025-04-13 21:34:13,109 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 21:34:13,109 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:13,109 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 0 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 21:34:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50736 states. [2025-04-13 21:34:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50736 to 35373. [2025-04-13 21:34:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35373 states, 35369 states have (on average 2.9702564392547144) internal successors, (105055), 35372 states have internal predecessors, (105055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35373 states to 35373 states and 105055 transitions. [2025-04-13 21:34:13,943 INFO L79 Accepts]: Start accepts. Automaton has 35373 states and 105055 transitions. Word has length 51 [2025-04-13 21:34:13,943 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:13,944 INFO L485 AbstractCegarLoop]: Abstraction has 35373 states and 105055 transitions. [2025-04-13 21:34:13,944 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.636363636363637) internal successors, (153), 34 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:13,944 INFO L278 IsEmpty]: Start isEmpty. Operand 35373 states and 105055 transitions. [2025-04-13 21:34:13,947 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-04-13 21:34:13,947 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:13,947 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:13,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 21:34:14,147 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 21:34:14,147 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:14,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:14,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2009665982, now seen corresponding path program 6 times [2025-04-13 21:34:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:14,150 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493812692] [2025-04-13 21:34:14,150 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:34:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:14,170 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 7 equivalence classes. [2025-04-13 21:34:14,542 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 21:34:14,542 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:34:14,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 21:34:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:16,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493812692] [2025-04-13 21:34:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493812692] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:16,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255149863] [2025-04-13 21:34:16,496 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:34:16,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:16,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:16,498 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:34:16,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 21:34:16,643 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 7 equivalence classes. [2025-04-13 21:34:17,133 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 21:34:17,133 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:34:17,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:17,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 21:34:17,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:17,168 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 21:34:17,193 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:34:17,224 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:34:17,259 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:34:17,292 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:34:17,333 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:34:17,383 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 21:34:17,383 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 27 [2025-04-13 21:34:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:18,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255149863] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:20,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 36 [2025-04-13 21:34:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252794072] [2025-04-13 21:34:20,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:20,314 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 21:34:20,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:20,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 21:34:20,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 21:34:20,315 INFO L87 Difference]: Start difference. First operand 35373 states and 105055 transitions. Second operand has 37 states, 36 states have (on average 4.611111111111111) internal successors, (166), 37 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:23,710 INFO L93 Difference]: Finished difference Result 52761 states and 154014 transitions. [2025-04-13 21:34:23,710 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 21:34:23,710 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.611111111111111) internal successors, (166), 37 states have internal predecessors, (166), 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 59 [2025-04-13 21:34:23,711 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:23,908 INFO L225 Difference]: With dead ends: 52761 [2025-04-13 21:34:23,909 INFO L226 Difference]: Without dead ends: 52269 [2025-04-13 21:34:23,938 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1039, Invalid=3383, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 21:34:23,938 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 778 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:23,938 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 0 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 21:34:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52269 states. [2025-04-13 21:34:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52269 to 34191. [2025-04-13 21:34:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34191 states, 34187 states have (on average 2.969140316494574) internal successors, (101506), 34190 states have internal predecessors, (101506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34191 states to 34191 states and 101506 transitions. [2025-04-13 21:34:24,782 INFO L79 Accepts]: Start accepts. Automaton has 34191 states and 101506 transitions. Word has length 59 [2025-04-13 21:34:24,783 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:24,783 INFO L485 AbstractCegarLoop]: Abstraction has 34191 states and 101506 transitions. [2025-04-13 21:34:24,783 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.611111111111111) internal successors, (166), 37 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:24,783 INFO L278 IsEmpty]: Start isEmpty. Operand 34191 states and 101506 transitions. [2025-04-13 21:34:24,786 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-04-13 21:34:24,786 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:24,787 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:24,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 21:34:24,987 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 21:34:24,987 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:24,990 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash -709674524, now seen corresponding path program 3 times [2025-04-13 21:34:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:24,990 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24393112] [2025-04-13 21:34:24,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:25,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 12 equivalence classes. [2025-04-13 21:34:25,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 67 statements. [2025-04-13 21:34:25,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:34:25,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-04-13 21:34:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:25,553 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24393112] [2025-04-13 21:34:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24393112] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:25,553 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480276177] [2025-04-13 21:34:25,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:25,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:34:25,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 21:34:25,709 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 12 equivalence classes. [2025-04-13 21:34:25,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 67 statements. [2025-04-13 21:34:25,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:34:25,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:25,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:34:25,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:25,906 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:25,927 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:27,286 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 247 treesize of output 208 [2025-04-13 21:34:27,817 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 21:34:27,817 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 208 treesize of output 877 [2025-04-13 21:35:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:35:18,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 67 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:35:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480276177] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:18,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2025-04-13 21:35:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548310156] [2025-04-13 21:35:18,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:18,894 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 21:35:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:18,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 21:35:18,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-04-13 21:35:18,894 INFO L87 Difference]: Start difference. First operand 34191 states and 101506 transitions. Second operand has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:35:19,849 INFO L93 Difference]: Finished difference Result 55802 states and 156513 transitions. [2025-04-13 21:35:19,849 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 21:35:19,850 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 states have internal predecessors, (77), 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 67 [2025-04-13 21:35:19,850 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:35:20,002 INFO L225 Difference]: With dead ends: 55802 [2025-04-13 21:35:20,002 INFO L226 Difference]: Without dead ends: 55796 [2025-04-13 21:35:20,026 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2025-04-13 21:35:20,027 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:35:20,027 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 21:35:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55796 states. [2025-04-13 21:35:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55796 to 40711. [2025-04-13 21:35:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40711 states, 40707 states have (on average 2.950401650821726) internal successors, (120102), 40710 states have internal predecessors, (120102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40711 states to 40711 states and 120102 transitions. [2025-04-13 21:35:20,964 INFO L79 Accepts]: Start accepts. Automaton has 40711 states and 120102 transitions. Word has length 67 [2025-04-13 21:35:20,964 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:35:20,964 INFO L485 AbstractCegarLoop]: Abstraction has 40711 states and 120102 transitions. [2025-04-13 21:35:20,964 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:20,964 INFO L278 IsEmpty]: Start isEmpty. Operand 40711 states and 120102 transitions. [2025-04-13 21:35:20,967 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-04-13 21:35:20,967 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:35:20,967 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:35:20,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-13 21:35:21,168 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:21,168 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:35:21,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:35:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1301031774, now seen corresponding path program 7 times [2025-04-13 21:35:21,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:35:21,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893528268] [2025-04-13 21:35:21,168 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:35:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:35:21,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-04-13 21:35:21,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:35:21,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:35:21,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 21:35:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:35:23,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893528268] [2025-04-13 21:35:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893528268] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:35:23,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840654128] [2025-04-13 21:35:23,744 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:35:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:35:23,746 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:35:23,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 21:35:23,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-04-13 21:35:24,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:35:24,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:35:24,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:24,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-13 21:35:24,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:35:24,106 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 21:35:24,167 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 19 [2025-04-13 21:35:24,250 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:35:24,250 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-04-13 21:35:24,375 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:35:24,375 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-04-13 21:35:24,470 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 19 [2025-04-13 21:35:24,597 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:35:24,598 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-04-13 21:35:24,703 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 19 [2025-04-13 21:35:24,805 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 19 [2025-04-13 21:35:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 14 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:27,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 21 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840654128] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:29,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 16] total 42 [2025-04-13 21:35:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147754455] [2025-04-13 21:35:29,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:29,324 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-13 21:35:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:29,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-13 21:35:29,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 21:35:29,325 INFO L87 Difference]: Start difference. First operand 40711 states and 120102 transitions. Second operand has 43 states, 42 states have (on average 4.785714285714286) internal successors, (201), 43 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:35:54,013 INFO L93 Difference]: Finished difference Result 90070 states and 245671 transitions. [2025-04-13 21:35:54,013 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2025-04-13 21:35:54,013 INFO L79 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.785714285714286) internal successors, (201), 43 states have internal predecessors, (201), 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 67 [2025-04-13 21:35:54,014 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:35:54,279 INFO L225 Difference]: With dead ends: 90070 [2025-04-13 21:35:54,279 INFO L226 Difference]: Without dead ends: 88216 [2025-04-13 21:35:54,333 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 212 SyntacticMatches, 6 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12336 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=7699, Invalid=28211, Unknown=0, NotChecked=0, Total=35910 [2025-04-13 21:35:54,333 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1903 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6766 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 6766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:35:54,333 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 0 Invalid, 6930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 6766 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-04-13 21:35:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88216 states. [2025-04-13 21:35:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88216 to 45493. [2025-04-13 21:35:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45493 states, 45489 states have (on average 2.9759941963991294) internal successors, (135375), 45492 states have internal predecessors, (135375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45493 states to 45493 states and 135375 transitions. [2025-04-13 21:35:56,037 INFO L79 Accepts]: Start accepts. Automaton has 45493 states and 135375 transitions. Word has length 67 [2025-04-13 21:35:56,037 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:35:56,038 INFO L485 AbstractCegarLoop]: Abstraction has 45493 states and 135375 transitions. [2025-04-13 21:35:56,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.785714285714286) internal successors, (201), 43 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:35:56,038 INFO L278 IsEmpty]: Start isEmpty. Operand 45493 states and 135375 transitions. [2025-04-13 21:35:56,043 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-04-13 21:35:56,043 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:35:56,043 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:35:56,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 21:35:56,248 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 21:35:56,248 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:35:56,249 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:35:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 748687265, now seen corresponding path program 4 times [2025-04-13 21:35:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:35:56,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647809243] [2025-04-13 21:35:56,249 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:35:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:35:56,292 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 71 statements into 2 equivalence classes. [2025-04-13 21:35:56,325 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-04-13 21:35:56,325 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:35:56,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:57,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:35:57,481 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647809243] [2025-04-13 21:35:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647809243] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:35:57,482 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979785775] [2025-04-13 21:35:57,482 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:35:57,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:35:57,484 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:35:57,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 21:35:57,688 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 71 statements into 2 equivalence classes. [2025-04-13 21:35:57,788 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-04-13 21:35:57,789 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:35:57,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:57,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 21:35:57,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:35:57,806 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,824 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,839 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,856 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,873 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,890 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,909 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,928 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,946 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,967 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:57,985 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:35:58,429 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 41 [2025-04-13 21:35:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:58,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 94 proven. 38 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2025-04-13 21:35:58,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979785775] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:58,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:58,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 9] total 38 [2025-04-13 21:35:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797467270] [2025-04-13 21:35:58,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:58,750 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 21:35:58,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:58,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 21:35:58,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 21:35:58,751 INFO L87 Difference]: Start difference. First operand 45493 states and 135375 transitions. Second operand has 39 states, 38 states have (on average 4.657894736842105) internal successors, (177), 39 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:01,402 INFO L93 Difference]: Finished difference Result 117971 states and 343321 transitions. [2025-04-13 21:36:01,403 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-13 21:36:01,403 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 4.657894736842105) internal successors, (177), 39 states have internal predecessors, (177), 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 71 [2025-04-13 21:36:01,403 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:01,850 INFO L225 Difference]: With dead ends: 117971 [2025-04-13 21:36:01,850 INFO L226 Difference]: Without dead ends: 117790 [2025-04-13 21:36:01,901 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=866, Invalid=1786, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 21:36:01,901 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 849 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5170 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:01,901 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 0 Invalid, 5274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5170 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-04-13 21:36:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117790 states. [2025-04-13 21:36:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117790 to 52531. [2025-04-13 21:36:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52531 states, 52527 states have (on average 2.9719572791135986) internal successors, (156108), 52530 states have internal predecessors, (156108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52531 states to 52531 states and 156108 transitions. [2025-04-13 21:36:04,129 INFO L79 Accepts]: Start accepts. Automaton has 52531 states and 156108 transitions. Word has length 71 [2025-04-13 21:36:04,130 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:04,130 INFO L485 AbstractCegarLoop]: Abstraction has 52531 states and 156108 transitions. [2025-04-13 21:36:04,130 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 4.657894736842105) internal successors, (177), 39 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:04,130 INFO L278 IsEmpty]: Start isEmpty. Operand 52531 states and 156108 transitions. [2025-04-13 21:36:04,137 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-04-13 21:36:04,137 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:04,137 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:04,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-13 21:36:04,337 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:04,337 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:36:04,338 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1896409086, now seen corresponding path program 8 times [2025-04-13 21:36:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:04,338 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350719661] [2025-04-13 21:36:04,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:36:04,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:04,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-04-13 21:36:04,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:36:04,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:36:04,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 21:36:07,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:07,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350719661] [2025-04-13 21:36:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350719661] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:07,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129645496] [2025-04-13 21:36:07,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:36:07,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:07,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:07,193 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:36:07,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 21:36:07,392 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-04-13 21:36:07,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:36:07,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:36:07,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:07,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 21:36:07,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:07,532 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 21:36:07,559 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,594 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,632 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,668 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,708 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,747 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,787 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:07,828 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:09,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 24 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129645496] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:12,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 18] total 44 [2025-04-13 21:36:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931209717] [2025-04-13 21:36:12,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:12,055 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-13 21:36:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:12,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-13 21:36:12,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 21:36:12,056 INFO L87 Difference]: Start difference. First operand 52531 states and 156108 transitions. Second operand has 45 states, 44 states have (on average 4.818181818181818) internal successors, (212), 45 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:18,347 INFO L93 Difference]: Finished difference Result 68776 states and 200768 transitions. [2025-04-13 21:36:18,348 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 21:36:18,348 INFO L79 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.818181818181818) internal successors, (212), 45 states have internal predecessors, (212), 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 75 [2025-04-13 21:36:18,348 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:18,558 INFO L225 Difference]: With dead ends: 68776 [2025-04-13 21:36:18,559 INFO L226 Difference]: Without dead ends: 68008 [2025-04-13 21:36:18,588 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1556, Invalid=5250, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 21:36:18,589 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1062 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4946 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 4946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:18,589 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 0 Invalid, 5085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 4946 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 21:36:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68008 states. [2025-04-13 21:36:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68008 to 48125. [2025-04-13 21:36:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48125 states, 48121 states have (on average 2.969036387439995) internal successors, (142873), 48124 states have internal predecessors, (142873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48125 states to 48125 states and 142873 transitions. [2025-04-13 21:36:20,035 INFO L79 Accepts]: Start accepts. Automaton has 48125 states and 142873 transitions. Word has length 75 [2025-04-13 21:36:20,035 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:20,035 INFO L485 AbstractCegarLoop]: Abstraction has 48125 states and 142873 transitions. [2025-04-13 21:36:20,035 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.818181818181818) internal successors, (212), 45 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:20,035 INFO L278 IsEmpty]: Start isEmpty. Operand 48125 states and 142873 transitions. [2025-04-13 21:36:20,043 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-04-13 21:36:20,043 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:20,043 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:20,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-13 21:36:20,243 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:20,244 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:36:20,245 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash 875386369, now seen corresponding path program 5 times [2025-04-13 21:36:20,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:20,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283300393] [2025-04-13 21:36:20,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:36:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:20,272 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 13 equivalence classes. [2025-04-13 21:36:20,339 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 79 of 79 statements. [2025-04-13 21:36:20,339 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-04-13 21:36:20,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:21,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283300393] [2025-04-13 21:36:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283300393] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:21,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660254713] [2025-04-13 21:36:21,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:36:21,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:21,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:21,887 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:36:21,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 21:36:22,094 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 13 equivalence classes. [2025-04-13 21:36:23,113 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 79 of 79 statements. [2025-04-13 21:36:23,113 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-04-13 21:36:23,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:23,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 21:36:23,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:23,135 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,154 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,171 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,191 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,208 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,230 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,249 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,267 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,288 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,308 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,332 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:23,359 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:24,004 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 69 treesize of output 51 [2025-04-13 21:36:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:24,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 128 proven. 66 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2025-04-13 21:36:24,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660254713] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:24,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:24,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 11] total 43 [2025-04-13 21:36:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971102817] [2025-04-13 21:36:24,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:24,465 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-04-13 21:36:24,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:24,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-04-13 21:36:24,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1430, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 21:36:24,466 INFO L87 Difference]: Start difference. First operand 48125 states and 142873 transitions. Second operand has 44 states, 43 states have (on average 4.674418604651163) internal successors, (201), 44 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:27,638 INFO L93 Difference]: Finished difference Result 149004 states and 431449 transitions. [2025-04-13 21:36:27,638 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-04-13 21:36:27,639 INFO L79 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.674418604651163) internal successors, (201), 44 states have internal predecessors, (201), 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 79 [2025-04-13 21:36:27,639 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:28,322 INFO L225 Difference]: With dead ends: 149004 [2025-04-13 21:36:28,322 INFO L226 Difference]: Without dead ends: 148802 [2025-04-13 21:36:28,354 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1359, Invalid=2673, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 21:36:28,355 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5770 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 5770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:28,355 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 0 Invalid, 5923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 5770 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 21:36:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148802 states. [2025-04-13 21:36:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148802 to 62483. [2025-04-13 21:36:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62483 states, 62479 states have (on average 2.976616143024056) internal successors, (185976), 62482 states have internal predecessors, (185976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62483 states to 62483 states and 185976 transitions. [2025-04-13 21:36:30,760 INFO L79 Accepts]: Start accepts. Automaton has 62483 states and 185976 transitions. Word has length 79 [2025-04-13 21:36:30,760 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:30,760 INFO L485 AbstractCegarLoop]: Abstraction has 62483 states and 185976 transitions. [2025-04-13 21:36:30,760 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.674418604651163) internal successors, (201), 44 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:30,760 INFO L278 IsEmpty]: Start isEmpty. Operand 62483 states and 185976 transitions. [2025-04-13 21:36:30,769 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-04-13 21:36:30,770 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:30,770 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:30,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 21:36:30,970 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:30,970 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:36:30,973 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -141038640, now seen corresponding path program 6 times [2025-04-13 21:36:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:30,973 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817130255] [2025-04-13 21:36:30,973 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:36:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:31,001 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 83 statements into 15 equivalence classes. [2025-04-13 21:36:31,336 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 63 of 83 statements. [2025-04-13 21:36:31,336 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-04-13 21:36:31,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 209 proven. 51 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2025-04-13 21:36:32,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:32,704 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817130255] [2025-04-13 21:36:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817130255] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:32,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493752411] [2025-04-13 21:36:32,705 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:36:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:32,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:32,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:36:32,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 21:36:32,972 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 83 statements into 15 equivalence classes. [2025-04-13 21:36:33,750 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 63 of 83 statements. [2025-04-13 21:36:33,750 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-04-13 21:36:33,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:33,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 21:36:33,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:33,772 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:33,801 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:33,834 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:33,891 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 230 proven. 33 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-04-13 21:36:36,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 209 proven. 54 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-04-13 21:36:36,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493752411] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:36,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:36,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2025-04-13 21:36:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519768859] [2025-04-13 21:36:36,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:36,481 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 21:36:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:36,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 21:36:36,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2025-04-13 21:36:36,481 INFO L87 Difference]: Start difference. First operand 62483 states and 185976 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:38,724 INFO L93 Difference]: Finished difference Result 131483 states and 368746 transitions. [2025-04-13 21:36:38,724 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 21:36:38,724 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-04-13 21:36:38,725 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:39,143 INFO L225 Difference]: With dead ends: 131483 [2025-04-13 21:36:39,143 INFO L226 Difference]: Without dead ends: 131477 [2025-04-13 21:36:39,193 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 21:36:39,195 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 339 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:39,195 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 0 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 21:36:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131477 states. [2025-04-13 21:36:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131477 to 59943. [2025-04-13 21:36:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59943 states, 59939 states have (on average 2.9739234888803616) internal successors, (178254), 59942 states have internal predecessors, (178254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59943 states to 59943 states and 178254 transitions. [2025-04-13 21:36:41,513 INFO L79 Accepts]: Start accepts. Automaton has 59943 states and 178254 transitions. Word has length 83 [2025-04-13 21:36:41,513 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:41,513 INFO L485 AbstractCegarLoop]: Abstraction has 59943 states and 178254 transitions. [2025-04-13 21:36:41,513 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:41,513 INFO L278 IsEmpty]: Start isEmpty. Operand 59943 states and 178254 transitions. [2025-04-13 21:36:41,521 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-04-13 21:36:41,521 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:41,521 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:41,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-13 21:36:41,722 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:41,722 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:36:41,724 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1151525706, now seen corresponding path program 7 times [2025-04-13 21:36:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:41,724 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360405979] [2025-04-13 21:36:41,724 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:36:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:41,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-04-13 21:36:41,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:41,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:41,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:43,183 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360405979] [2025-04-13 21:36:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360405979] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:43,183 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74528233] [2025-04-13 21:36:43,183 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:36:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:43,185 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:36:43,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 21:36:43,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-04-13 21:36:43,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:43,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:43,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:43,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-13 21:36:43,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:43,538 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,554 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,573 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,593 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,610 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,630 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,649 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,668 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,686 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,710 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,731 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,751 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:43,772 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:44,235 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 41 [2025-04-13 21:36:44,245 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:36:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:44,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 82 proven. 39 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-04-13 21:36:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74528233] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:44,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 9] total 43 [2025-04-13 21:36:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138328854] [2025-04-13 21:36:44,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:44,601 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-04-13 21:36:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:44,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-04-13 21:36:44,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1443, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 21:36:44,602 INFO L87 Difference]: Start difference. First operand 59943 states and 178254 transitions. Second operand has 44 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 44 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:48,166 INFO L93 Difference]: Finished difference Result 203212 states and 586352 transitions. [2025-04-13 21:36:48,166 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-04-13 21:36:48,167 INFO L79 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 44 states have internal predecessors, (197), 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 83 [2025-04-13 21:36:48,167 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:48,911 INFO L225 Difference]: With dead ends: 203212 [2025-04-13 21:36:48,911 INFO L226 Difference]: Without dead ends: 203010 [2025-04-13 21:36:49,329 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1332, Invalid=2700, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 21:36:49,334 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 915 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6132 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 6132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:49,334 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 0 Invalid, 6252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 6132 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 21:36:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203010 states. [2025-04-13 21:36:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203010 to 66397. [2025-04-13 21:36:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66397 states, 66393 states have (on average 2.9687015197385267) internal successors, (197101), 66396 states have internal predecessors, (197101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66397 states to 66397 states and 197101 transitions. [2025-04-13 21:36:52,640 INFO L79 Accepts]: Start accepts. Automaton has 66397 states and 197101 transitions. Word has length 83 [2025-04-13 21:36:52,641 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:52,641 INFO L485 AbstractCegarLoop]: Abstraction has 66397 states and 197101 transitions. [2025-04-13 21:36:52,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.5813953488372094) internal successors, (197), 44 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:36:52,641 INFO L278 IsEmpty]: Start isEmpty. Operand 66397 states and 197101 transitions. [2025-04-13 21:36:52,650 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-04-13 21:36:52,650 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:52,650 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:52,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 21:36:52,850 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-13 21:36:52,851 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:36:52,853 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2053978210, now seen corresponding path program 9 times [2025-04-13 21:36:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:52,853 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695731652] [2025-04-13 21:36:52,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:36:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:52,885 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 10 equivalence classes. [2025-04-13 21:36:53,397 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:53,398 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-04-13 21:36:53,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 16 proven. 405 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:36:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:57,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695731652] [2025-04-13 21:36:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695731652] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:57,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871782344] [2025-04-13 21:36:57,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:36:57,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:57,612 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:36:57,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 21:36:57,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 10 equivalence classes. [2025-04-13 21:36:58,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:58,931 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-04-13 21:36:58,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:58,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 21:36:58,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:58,978 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 21:36:59,007 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,033 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,079 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,117 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,155 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,190 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,230 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,269 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:36:59,307 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:01,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 27 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:04,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871782344] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:04,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:04,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 54 [2025-04-13 21:37:04,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053068152] [2025-04-13 21:37:04,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:04,457 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-04-13 21:37:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:04,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-04-13 21:37:04,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=2387, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 21:37:04,458 INFO L87 Difference]: Start difference. First operand 66397 states and 197101 transitions. Second operand has 55 states, 54 states have (on average 4.296296296296297) internal successors, (232), 55 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:37:12,846 INFO L93 Difference]: Finished difference Result 81178 states and 237457 transitions. [2025-04-13 21:37:12,847 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-04-13 21:37:12,847 INFO L79 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 4.296296296296297) internal successors, (232), 55 states have internal predecessors, (232), 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 83 [2025-04-13 21:37:12,847 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:37:13,094 INFO L225 Difference]: With dead ends: 81178 [2025-04-13 21:37:13,094 INFO L226 Difference]: Without dead ends: 80509 [2025-04-13 21:37:13,128 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3261 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2483, Invalid=8229, Unknown=0, NotChecked=0, Total=10712 [2025-04-13 21:37:13,129 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4698 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 4698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:37:13,129 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 0 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 4698 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-04-13 21:37:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80509 states. [2025-04-13 21:37:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80509 to 61547. [2025-04-13 21:37:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61547 states, 61543 states have (on average 2.9649513348390557) internal successors, (182472), 61546 states have internal predecessors, (182472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61547 states to 61547 states and 182472 transitions. [2025-04-13 21:37:14,791 INFO L79 Accepts]: Start accepts. Automaton has 61547 states and 182472 transitions. Word has length 83 [2025-04-13 21:37:14,791 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:37:14,791 INFO L485 AbstractCegarLoop]: Abstraction has 61547 states and 182472 transitions. [2025-04-13 21:37:14,792 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 4.296296296296297) internal successors, (232), 55 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:14,792 INFO L278 IsEmpty]: Start isEmpty. Operand 61547 states and 182472 transitions. [2025-04-13 21:37:14,804 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-04-13 21:37:14,804 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:37:14,804 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:37:14,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 21:37:15,004 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-04-13 21:37:15,005 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:37:15,005 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:37:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -743468028, now seen corresponding path program 8 times [2025-04-13 21:37:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:37:15,005 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866470719] [2025-04-13 21:37:15,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:37:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:37:15,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:15,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-13 21:37:15,075 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:37:15,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:16,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:37:16,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866470719] [2025-04-13 21:37:16,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866470719] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:37:16,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857735134] [2025-04-13 21:37:16,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:37:16,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:16,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:37:16,874 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:37:16,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 21:37:17,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:17,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-13 21:37:17,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:37:17,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:17,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 21:37:17,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:37:17,290 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,311 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,332 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,354 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,376 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,397 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,418 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,440 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,462 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,486 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,510 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,533 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,553 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:17,576 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:18,410 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 81 treesize of output 61 [2025-04-13 21:37:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:18,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 181 proven. 102 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:37:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857735134] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:19,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 13] total 50 [2025-04-13 21:37:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014804580] [2025-04-13 21:37:19,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:19,019 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-13 21:37:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:19,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-13 21:37:19,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 21:37:19,020 INFO L87 Difference]: Start difference. First operand 61547 states and 182472 transitions. Second operand has 51 states, 50 states have (on average 4.66) internal successors, (233), 51 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:37:23,403 INFO L93 Difference]: Finished difference Result 196905 states and 572272 transitions. [2025-04-13 21:37:23,403 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-04-13 21:37:23,404 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.66) internal successors, (233), 51 states have internal predecessors, (233), 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 91 [2025-04-13 21:37:23,404 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:37:24,472 INFO L225 Difference]: With dead ends: 196905 [2025-04-13 21:37:24,472 INFO L226 Difference]: Without dead ends: 196682 [2025-04-13 21:37:24,518 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1978, Invalid=3874, Unknown=0, NotChecked=0, Total=5852 [2025-04-13 21:37:24,520 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1466 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6599 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 6599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:37:24,521 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 0 Invalid, 6770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6599 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-04-13 21:37:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196682 states. [2025-04-13 21:37:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196682 to 70837. [2025-04-13 21:37:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70837 states, 70833 states have (on average 2.968602205186848) internal successors, (210275), 70836 states have internal predecessors, (210275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70837 states to 70837 states and 210275 transitions. [2025-04-13 21:37:27,350 INFO L79 Accepts]: Start accepts. Automaton has 70837 states and 210275 transitions. Word has length 91 [2025-04-13 21:37:27,351 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:37:27,351 INFO L485 AbstractCegarLoop]: Abstraction has 70837 states and 210275 transitions. [2025-04-13 21:37:27,351 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.66) internal successors, (233), 51 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:27,351 INFO L278 IsEmpty]: Start isEmpty. Operand 70837 states and 210275 transitions. [2025-04-13 21:37:27,365 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-04-13 21:37:27,365 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:37:27,365 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:37:27,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 21:37:27,565 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:27,566 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:37:27,567 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:37:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 733825598, now seen corresponding path program 10 times [2025-04-13 21:37:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:37:27,567 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314308500] [2025-04-13 21:37:27,567 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:37:27,595 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:27,902 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-13 21:37:27,902 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:27,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 21:37:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:37:32,615 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314308500] [2025-04-13 21:37:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314308500] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:37:32,616 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516367811] [2025-04-13 21:37:32,616 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:37:32,618 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:37:32,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 21:37:32,941 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:33,102 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-04-13 21:37:33,102 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:33,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:33,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-04-13 21:37:33,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:37:33,163 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 21:37:33,211 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,260 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,301 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,339 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,377 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,420 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,459 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,503 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,545 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:33,589 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-04-13 21:37:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:35,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 30 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516367811] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:40,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 58 [2025-04-13 21:37:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063877725] [2025-04-13 21:37:40,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:40,372 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:37:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:40,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:37:40,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=2843, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:37:40,373 INFO L87 Difference]: Start difference. First operand 70837 states and 210275 transitions. Second operand has 59 states, 58 states have (on average 4.706896551724138) internal successors, (273), 59 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:37:52,780 INFO L93 Difference]: Finished difference Result 96365 states and 279730 transitions. [2025-04-13 21:37:52,781 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-04-13 21:37:52,781 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.706896551724138) internal successors, (273), 59 states have internal predecessors, (273), 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 91 [2025-04-13 21:37:52,781 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:37:53,087 INFO L225 Difference]: With dead ends: 96365 [2025-04-13 21:37:53,087 INFO L226 Difference]: Without dead ends: 95285 [2025-04-13 21:37:53,127 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2495, Invalid=9061, Unknown=0, NotChecked=0, Total=11556 [2025-04-13 21:37:53,128 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9533 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 9533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:37:53,128 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 0 Invalid, 9741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 9533 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-04-13 21:37:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95285 states. [2025-04-13 21:37:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95285 to 72583. [2025-04-13 21:37:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72583 states, 72579 states have (on average 2.967277036057262) internal successors, (215362), 72582 states have internal predecessors, (215362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72583 states to 72583 states and 215362 transitions. [2025-04-13 21:37:55,318 INFO L79 Accepts]: Start accepts. Automaton has 72583 states and 215362 transitions. Word has length 91 [2025-04-13 21:37:55,318 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:37:55,318 INFO L485 AbstractCegarLoop]: Abstraction has 72583 states and 215362 transitions. [2025-04-13 21:37:55,318 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.706896551724138) internal successors, (273), 59 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:37:55,318 INFO L278 IsEmpty]: Start isEmpty. Operand 72583 states and 215362 transitions. [2025-04-13 21:37:55,331 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-04-13 21:37:55,331 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:37:55,331 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1] [2025-04-13 21:37:55,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-13 21:37:55,531 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:55,532 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:37:55,535 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:37:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1184173050, now seen corresponding path program 4 times [2025-04-13 21:37:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:37:55,535 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750150986] [2025-04-13 21:37:55,535 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:55,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:37:55,564 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-04-13 21:37:55,585 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-04-13 21:37:55,586 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:55,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:37:57,242 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750150986] [2025-04-13 21:37:57,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750150986] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:37:57,242 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273778450] [2025-04-13 21:37:57,242 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:57,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:57,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:37:57,244 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:37:57,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 21:37:57,540 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-04-13 21:37:57,667 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-04-13 21:37:57,667 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:57,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:57,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-04-13 21:37:57,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:37:57,691 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,714 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,741 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,765 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,794 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,814 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,834 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,857 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,883 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,909 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,935 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,962 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:57,987 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,010 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,039 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,066 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,093 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,124 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,154 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,186 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,221 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,251 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:37:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:58,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273778450] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:58,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:37:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911437932] [2025-04-13 21:37:58,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:58,777 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:37:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:58,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:37:58,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=3244, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:37:58,778 INFO L87 Difference]: Start difference. First operand 72583 states and 215362 transitions. Second operand has 71 states, 70 states have (on average 3.9857142857142858) internal successors, (279), 70 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:38:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:38:30,810 INFO L93 Difference]: Finished difference Result 1596122 states and 4798945 transitions. [2025-04-13 21:38:30,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 345 states. [2025-04-13 21:38:30,810 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.9857142857142858) internal successors, (279), 70 states have internal predecessors, (279), 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 93 [2025-04-13 21:38:30,810 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:38:40,474 INFO L225 Difference]: With dead ends: 1596122 [2025-04-13 21:38:40,475 INFO L226 Difference]: Without dead ends: 1595865 [2025-04-13 21:38:41,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56671 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=35096, Invalid=83584, Unknown=0, NotChecked=0, Total=118680 [2025-04-13 21:38:41,032 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20072 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 5635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20072 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5635 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:38:41,032 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20072 Valid, 0 Invalid, 10199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5635 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-04-13 21:38:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595865 states.