/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_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:33:28,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:33:28,237 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 21:33:28,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:33:28,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:33:28,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:33:28,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:33:28,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:33:28,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:33:28,263 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:33:28,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:33:28,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:33:28,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:33:28,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:33:28,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:33:28,264 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:33:28,265 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:33:28,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:28,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:28,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:33:28,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:33:28,266 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 21:33:28,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:33:28,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:33:28,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:33:28,503 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:33:28,503 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:33:28,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2025-04-13 21:33:29,859 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3e21012/27ed1789096146878a5ce2a36c4fba80/FLAG7df1df003 [2025-04-13 21:33:30,130 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:33:30,131 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2025-04-13 21:33:30,148 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3e21012/27ed1789096146878a5ce2a36c4fba80/FLAG7df1df003 [2025-04-13 21:33:30,910 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3e21012/27ed1789096146878a5ce2a36c4fba80 [2025-04-13 21:33:30,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:33:30,914 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:33:30,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:30,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:33:30,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:33:30,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:30" (1/1) ... [2025-04-13 21:33:30,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bf713a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:30, skipping insertion in model container [2025-04-13 21:33:30,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:33:30" (1/1) ... [2025-04-13 21:33:30,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:33:31,291 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_longest-2.i[41530,41543] [2025-04-13 21:33:31,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:31,359 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:33:31,424 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_longest-2.i[41530,41543] [2025-04-13 21:33:31,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:33:31,521 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:33:31,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31 WrapperNode [2025-04-13 21:33:31,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:33:31,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:31,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:33:31,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:33:31,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,632 INFO L138 Inliner]: procedures = 277, calls = 830, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 939 [2025-04-13 21:33:31,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:33:31,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:33:31,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:33:31,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:33:31,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,693 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 802, 5]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 800, 5]. The 1 writes are split as follows [0, 1, 0]. [2025-04-13 21:33:31,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,726 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:33:31,748 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:33:31,748 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:33:31,748 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:33:31,749 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (1/1) ... [2025-04-13 21:33:31,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:33:31,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:31,778 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 21:33:31,780 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 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:33:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:33:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:33:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 21:33:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:33:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:33:31,800 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 21:33:31,901 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:33:31,903 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:33:32,805 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2025-04-13 21:33:32,805 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2025-04-13 21:33:32,805 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2025-04-13 21:33:32,806 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:33:32,806 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:33:32,806 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:33:44,129 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:44,130 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:33:44,132 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:33:44,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:44 BoogieIcfgContainer [2025-04-13 21:33:44,132 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:33:44,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:33:44,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:33:44,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:33:44,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:33:30" (1/3) ... [2025-04-13 21:33:44,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114d04af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:44, skipping insertion in model container [2025-04-13 21:33:44,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:33:31" (2/3) ... [2025-04-13 21:33:44,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114d04af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:33:44, skipping insertion in model container [2025-04-13 21:33:44,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:33:44" (3/3) ... [2025-04-13 21:33:44,140 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2025-04-13 21:33:44,150 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:33:44,151 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longest-2.i that has 3 procedures, 23 locations, 24 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-13 21:33:44,151 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:33:44,214 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:33:44,236 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 66 flow [2025-04-13 21:33:44,257 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 21:33:44,276 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:33:44,286 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;@664c430f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:33:44,286 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 21:33:44,288 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 21:33:44,291 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-13 21:33:44,291 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:44,293 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 21:33:44,293 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 21:33:44,296 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1853549348, now seen corresponding path program 1 times [2025-04-13 21:33:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:44,302 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664725576] [2025-04-13 21:33:44,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:44,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 21:33:44,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 21:33:44,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:44,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:44,874 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 21:33:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:44,877 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664725576] [2025-04-13 21:33:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664725576] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:44,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:33:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878382816] [2025-04-13 21:33:44,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:44,883 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:44,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:44,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:44,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:44,901 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 21:33:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:45,010 INFO L93 Difference]: Finished difference Result 200 states and 488 transitions. [2025-04-13 21:33:45,012 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:45,013 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 21:33:45,014 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:45,021 INFO L225 Difference]: With dead ends: 200 [2025-04-13 21:33:45,021 INFO L226 Difference]: Without dead ends: 144 [2025-04-13 21:33:45,023 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 21:33:45,026 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 21:33:45,026 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 21:33:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-04-13 21:33:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-04-13 21:33:45,059 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 21:33:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 345 transitions. [2025-04-13 21:33:45,069 INFO L79 Accepts]: Start accepts. Automaton has 144 states and 345 transitions. Word has length 5 [2025-04-13 21:33:45,069 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:45,069 INFO L485 AbstractCegarLoop]: Abstraction has 144 states and 345 transitions. [2025-04-13 21:33:45,070 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 21:33:45,070 INFO L278 IsEmpty]: Start isEmpty. Operand 144 states and 345 transitions. [2025-04-13 21:33:45,071 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-13 21:33:45,071 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:45,072 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:45,072 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:33:45,072 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 21:33:45,072 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1767561081, now seen corresponding path program 1 times [2025-04-13 21:33:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:45,072 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060078036] [2025-04-13 21:33:45,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:45,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:45,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:45,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:45,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:45,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:45,449 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 21:33:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:45,450 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060078036] [2025-04-13 21:33:45,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060078036] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:45,450 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550725810] [2025-04-13 21:33:45,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:45,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:45,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:45,453 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 21:33:45,455 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 21:33:45,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 21:33:45,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 21:33:45,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:45,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:45,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 21:33:45,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:45,794 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 21:33:45,823 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 21:33:45,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:45,855 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 21:33:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550725810] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:45,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-04-13 21:33:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463381978] [2025-04-13 21:33:45,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:45,856 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 21:33:45,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:45,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 21:33:45,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-04-13 21:33:45,857 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 21:33:46,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:46,023 INFO L93 Difference]: Finished difference Result 561 states and 1392 transitions. [2025-04-13 21:33:46,023 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 21:33:46,023 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 21:33:46,023 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:46,027 INFO L225 Difference]: With dead ends: 561 [2025-04-13 21:33:46,027 INFO L226 Difference]: Without dead ends: 522 [2025-04-13 21:33:46,027 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 21:33:46,028 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, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:46,028 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2025-04-13 21:33:46,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 429. [2025-04-13 21:33:46,062 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 21:33:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1088 transitions. [2025-04-13 21:33:46,065 INFO L79 Accepts]: Start accepts. Automaton has 429 states and 1088 transitions. Word has length 9 [2025-04-13 21:33:46,065 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:46,065 INFO L485 AbstractCegarLoop]: Abstraction has 429 states and 1088 transitions. [2025-04-13 21:33:46,068 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 21:33:46,069 INFO L278 IsEmpty]: Start isEmpty. Operand 429 states and 1088 transitions. [2025-04-13 21:33:46,069 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 21:33:46,069 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:46,069 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:46,079 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 21:33:46,270 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 21:33:46,270 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 21:33:46,270 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1022970066, now seen corresponding path program 1 times [2025-04-13 21:33:46,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:46,271 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903727075] [2025-04-13 21:33:46,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:46,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 21:33:46,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 21:33:46,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:46,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:46,521 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 21:33:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:46,521 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903727075] [2025-04-13 21:33:46,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903727075] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:46,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:33:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981125345] [2025-04-13 21:33:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:46,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:46,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:46,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:33:46,522 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 21:33:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:46,582 INFO L93 Difference]: Finished difference Result 639 states and 1647 transitions. [2025-04-13 21:33:46,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:46,584 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 21:33:46,584 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:46,585 INFO L225 Difference]: With dead ends: 639 [2025-04-13 21:33:46,585 INFO L226 Difference]: Without dead ends: 312 [2025-04-13 21:33:46,586 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 21:33:46,587 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, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:46,587 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:33:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-04-13 21:33:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 296. [2025-04-13 21:33:46,600 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 21:33:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 710 transitions. [2025-04-13 21:33:46,602 INFO L79 Accepts]: Start accepts. Automaton has 296 states and 710 transitions. Word has length 10 [2025-04-13 21:33:46,602 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:46,602 INFO L485 AbstractCegarLoop]: Abstraction has 296 states and 710 transitions. [2025-04-13 21:33:46,602 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 21:33:46,602 INFO L278 IsEmpty]: Start isEmpty. Operand 296 states and 710 transitions. [2025-04-13 21:33:46,602 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:33:46,602 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:46,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:46,605 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 21:33:46,605 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 21:33:46,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1199348194, now seen corresponding path program 1 times [2025-04-13 21:33:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:46,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832701849] [2025-04-13 21:33:46,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:46,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:33:46,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:33:46,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:46,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:47,652 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 21:33:47,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:47,652 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832701849] [2025-04-13 21:33:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832701849] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:47,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:33:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 21:33:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672601109] [2025-04-13 21:33:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:47,653 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:33:47,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:47,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:33:47,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:33:47,653 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 21:33:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:47,738 INFO L93 Difference]: Finished difference Result 382 states and 900 transitions. [2025-04-13 21:33:47,739 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 21:33:47,739 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 21:33:47,739 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:47,741 INFO L225 Difference]: With dead ends: 382 [2025-04-13 21:33:47,741 INFO L226 Difference]: Without dead ends: 361 [2025-04-13 21:33:47,742 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 21:33:47,742 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 21:33:47,742 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 21:33:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-04-13 21:33:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 315. [2025-04-13 21:33:47,761 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 21:33:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 761 transitions. [2025-04-13 21:33:47,763 INFO L79 Accepts]: Start accepts. Automaton has 315 states and 761 transitions. Word has length 11 [2025-04-13 21:33:47,763 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:47,763 INFO L485 AbstractCegarLoop]: Abstraction has 315 states and 761 transitions. [2025-04-13 21:33:47,763 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 21:33:47,763 INFO L278 IsEmpty]: Start isEmpty. Operand 315 states and 761 transitions. [2025-04-13 21:33:47,765 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:33:47,765 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:47,765 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:47,765 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 21:33:47,765 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 21:33:47,766 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1296266483, now seen corresponding path program 1 times [2025-04-13 21:33:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:47,766 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109469763] [2025-04-13 21:33:47,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:47,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:47,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:47,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:47,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:48,859 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 21:33:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:48,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109469763] [2025-04-13 21:33:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109469763] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:48,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945384467] [2025-04-13 21:33:48,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:48,861 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 21:33:48,863 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 21:33:48,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 21:33:49,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:33:49,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:49,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:49,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 21:33:49,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:49,212 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 25 treesize of output 1 [2025-04-13 21:33:49,292 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 21:33:49,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 21:33:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945384467] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:33:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 21:33:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2025-04-13 21:33:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712256452] [2025-04-13 21:33:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:49,293 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:33:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:49,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:33:49,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:33:49,294 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 21:33:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:49,368 INFO L93 Difference]: Finished difference Result 363 states and 869 transitions. [2025-04-13 21:33:49,369 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:33:49,369 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 21:33:49,370 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:49,371 INFO L225 Difference]: With dead ends: 363 [2025-04-13 21:33:49,371 INFO L226 Difference]: Without dead ends: 347 [2025-04-13 21:33:49,372 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:33:49,372 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 21:33:49,372 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 21:33:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-04-13 21:33:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 299. [2025-04-13 21:33:49,379 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 21:33:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 715 transitions. [2025-04-13 21:33:49,381 INFO L79 Accepts]: Start accepts. Automaton has 299 states and 715 transitions. Word has length 15 [2025-04-13 21:33:49,382 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:49,382 INFO L485 AbstractCegarLoop]: Abstraction has 299 states and 715 transitions. [2025-04-13 21:33:49,382 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 21:33:49,382 INFO L278 IsEmpty]: Start isEmpty. Operand 299 states and 715 transitions. [2025-04-13 21:33:49,383 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 21:33:49,383 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:49,383 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:49,394 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 21:33:49,587 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 21:33:49,588 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 21:33:49,588 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash -214920416, now seen corresponding path program 1 times [2025-04-13 21:33:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:49,588 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35106309] [2025-04-13 21:33:49,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:49,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:49,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:49,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:49,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:50,041 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 21:33:50,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:50,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35106309] [2025-04-13 21:33:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35106309] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:50,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961691234] [2025-04-13 21:33:50,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:50,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:50,043 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 21:33:50,045 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 21:33:50,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:50,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:50,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:50,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:50,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 21:33:50,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:50,345 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 21:33:50,366 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 21:33:50,528 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 21:33:50,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:50,676 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 21:33:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961691234] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:50,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 21:33:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 10 [2025-04-13 21:33:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876228818] [2025-04-13 21:33:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:33:50,676 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:33:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:50,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:33:50,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-04-13 21:33:50,677 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 21:33:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:50,791 INFO L93 Difference]: Finished difference Result 403 states and 960 transitions. [2025-04-13 21:33:50,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:33:50,792 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 21:33:50,792 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:50,794 INFO L225 Difference]: With dead ends: 403 [2025-04-13 21:33:50,794 INFO L226 Difference]: Without dead ends: 397 [2025-04-13 21:33:50,794 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 21:33:50,795 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 21:33:50,795 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 21:33:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2025-04-13 21:33:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 301. [2025-04-13 21:33:50,802 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 21:33:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 728 transitions. [2025-04-13 21:33:50,804 INFO L79 Accepts]: Start accepts. Automaton has 301 states and 728 transitions. Word has length 19 [2025-04-13 21:33:50,804 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:50,804 INFO L485 AbstractCegarLoop]: Abstraction has 301 states and 728 transitions. [2025-04-13 21:33:50,804 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 21:33:50,804 INFO L278 IsEmpty]: Start isEmpty. Operand 301 states and 728 transitions. [2025-04-13 21:33:50,805 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 21:33:50,805 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:50,805 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:50,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 21:33:51,006 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 21:33:51,006 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 21:33:51,006 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1613337104, now seen corresponding path program 1 times [2025-04-13 21:33:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:51,007 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380499443] [2025-04-13 21:33:51,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:51,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:51,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:51,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:51,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:51,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:52,359 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 21:33:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:52,359 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380499443] [2025-04-13 21:33:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380499443] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:52,359 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930415474] [2025-04-13 21:33:52,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:52,361 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 21:33:52,363 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 21:33:52,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:33:52,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:33:52,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:52,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:52,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 21:33:52,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:52,623 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 21:33:52,658 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 21:33:52,757 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 21:33:52,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:53,028 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 21:33:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930415474] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:53,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:53,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2025-04-13 21:33:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575990581] [2025-04-13 21:33:53,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:53,029 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 21:33:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:53,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 21:33:53,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:33:53,029 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 21:33:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:53,325 INFO L93 Difference]: Finished difference Result 662 states and 1580 transitions. [2025-04-13 21:33:53,326 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 21:33:53,326 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 21:33:53,327 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:53,330 INFO L225 Difference]: With dead ends: 662 [2025-04-13 21:33:53,330 INFO L226 Difference]: Without dead ends: 602 [2025-04-13 21:33:53,332 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 21:33:53,334 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:53,334 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:33:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-04-13 21:33:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 409. [2025-04-13 21:33:53,350 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 21:33:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1004 transitions. [2025-04-13 21:33:53,357 INFO L79 Accepts]: Start accepts. Automaton has 409 states and 1004 transitions. Word has length 19 [2025-04-13 21:33:53,358 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:53,358 INFO L485 AbstractCegarLoop]: Abstraction has 409 states and 1004 transitions. [2025-04-13 21:33:53,358 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 21:33:53,358 INFO L278 IsEmpty]: Start isEmpty. Operand 409 states and 1004 transitions. [2025-04-13 21:33:53,359 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 21:33:53,359 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:53,359 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-04-13 21:33:53,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:53,559 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 21:33:53,559 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 21:33:53,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1403885648, now seen corresponding path program 2 times [2025-04-13 21:33:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:53,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605860241] [2025-04-13 21:33:53,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:53,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 21:33:53,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:33:53,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:53,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:53,903 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 21:33:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:53,903 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605860241] [2025-04-13 21:33:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605860241] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:53,903 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798012639] [2025-04-13 21:33:53,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:53,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:53,905 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 21:33:53,907 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 21:33:53,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 21:33:54,138 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:33:54,139 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:54,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:54,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:33:54,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:54,162 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 21:33:54,190 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 21:33:54,217 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 21:33:54,242 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 21:33:54,262 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 21:33:54,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:54,327 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 21:33:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798012639] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:54,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:54,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-04-13 21:33:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566070154] [2025-04-13 21:33:54,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:54,328 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 21:33:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:54,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 21:33:54,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-04-13 21:33:54,329 INFO L87 Difference]: Start difference. First operand 409 states and 1004 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 21:33:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:54,886 INFO L93 Difference]: Finished difference Result 2398 states and 5895 transitions. [2025-04-13 21:33:54,886 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 21:33:54,886 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 21:33:54,886 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:54,897 INFO L225 Difference]: With dead ends: 2398 [2025-04-13 21:33:54,897 INFO L226 Difference]: Without dead ends: 2330 [2025-04-13 21:33:54,899 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=353, Invalid=517, Unknown=0, NotChecked=0, Total=870 [2025-04-13 21:33:54,899 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 551 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:54,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 0 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 21:33:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2025-04-13 21:33:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1359. [2025-04-13 21:33:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1355 states have (on average 2.6125461254612548) internal successors, (3540), 1358 states have internal predecessors, (3540), 0 states have call successors, (0), 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 21:33:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3540 transitions. [2025-04-13 21:33:54,944 INFO L79 Accepts]: Start accepts. Automaton has 1359 states and 3540 transitions. Word has length 21 [2025-04-13 21:33:54,944 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:54,944 INFO L485 AbstractCegarLoop]: Abstraction has 1359 states and 3540 transitions. [2025-04-13 21:33:54,945 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 21:33:54,945 INFO L278 IsEmpty]: Start isEmpty. Operand 1359 states and 3540 transitions. [2025-04-13 21:33:54,945 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:33:54,945 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:54,946 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:54,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 21:33:55,146 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 21:33:55,146 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 21:33:55,146 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 696709622, now seen corresponding path program 2 times [2025-04-13 21:33:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:55,147 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490079225] [2025-04-13 21:33:55,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:55,168 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:33:55,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:33:55,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:55,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:56,508 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 21:33:56,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:56,509 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490079225] [2025-04-13 21:33:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490079225] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:56,509 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660644115] [2025-04-13 21:33:56,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:33:56,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:56,512 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 21:33:56,514 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 21:33:56,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:33:56,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:33:56,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:33:56,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:56,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 21:33:56,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:56,788 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 21:33:56,821 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 21:33:56,856 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 21:33:57,095 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 21:33:57,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:57,529 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 21:33:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660644115] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:57,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:57,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2025-04-13 21:33:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877926110] [2025-04-13 21:33:57,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:57,530 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 21:33:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:57,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 21:33:57,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-04-13 21:33:57,531 INFO L87 Difference]: Start difference. First operand 1359 states and 3540 transitions. Second operand has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 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 21:33:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:33:58,270 INFO L93 Difference]: Finished difference Result 2339 states and 5864 transitions. [2025-04-13 21:33:58,270 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 21:33:58,270 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 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 21:33:58,270 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:33:58,280 INFO L225 Difference]: With dead ends: 2339 [2025-04-13 21:33:58,280 INFO L226 Difference]: Without dead ends: 2219 [2025-04-13 21:33:58,281 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2025-04-13 21:33:58,281 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:33:58,282 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 0 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 21:33:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2025-04-13 21:33:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1357. [2025-04-13 21:33:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1353 states have (on average 2.608277900960828) internal successors, (3529), 1356 states have internal predecessors, (3529), 0 states have call successors, (0), 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 21:33:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3529 transitions. [2025-04-13 21:33:58,314 INFO L79 Accepts]: Start accepts. Automaton has 1357 states and 3529 transitions. Word has length 27 [2025-04-13 21:33:58,314 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:58,314 INFO L485 AbstractCegarLoop]: Abstraction has 1357 states and 3529 transitions. [2025-04-13 21:33:58,314 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.764705882352941) internal successors, (81), 18 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 21:33:58,314 INFO L278 IsEmpty]: Start isEmpty. Operand 1357 states and 3529 transitions. [2025-04-13 21:33:58,315 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 21:33:58,315 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:58,315 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:58,324 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 21:33:58,520 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 21:33:58,520 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:33:58,520 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 995009812, now seen corresponding path program 1 times [2025-04-13 21:33:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:58,520 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922517649] [2025-04-13 21:33:58,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:58,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-13 21:33:58,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:33:58,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:58,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:33:59,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:59,102 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922517649] [2025-04-13 21:33:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922517649] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:59,103 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161944444] [2025-04-13 21:33:59,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:33:59,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:59,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:59,104 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 21:33:59,106 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 21:33:59,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-13 21:33:59,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:33:59,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:33:59,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:59,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-13 21:33:59,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:59,386 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 21:33:59,404 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 21:33:59,423 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 21:33:59,446 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 21:33:59,464 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 21:33:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:59,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-04-13 21:33:59,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161944444] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:59,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:59,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 19 [2025-04-13 21:33:59,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771263289] [2025-04-13 21:33:59,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:59,785 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 21:33:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:59,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 21:33:59,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2025-04-13 21:33:59,786 INFO L87 Difference]: Start difference. First operand 1357 states and 3529 transitions. Second operand has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:34:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:00,293 INFO L93 Difference]: Finished difference Result 4006 states and 10328 transitions. [2025-04-13 21:34:00,294 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 21:34:00,294 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:34:00,294 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:00,312 INFO L225 Difference]: With dead ends: 4006 [2025-04-13 21:34:00,313 INFO L226 Difference]: Without dead ends: 3930 [2025-04-13 21:34:00,315 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2025-04-13 21:34:00,315 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 232 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:00,316 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 0 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 21:34:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2025-04-13 21:34:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 2155. [2025-04-13 21:34:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 2151 states have (on average 2.703858670385867) internal successors, (5816), 2154 states have internal predecessors, (5816), 0 states have call successors, (0), 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 21:34:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 5816 transitions. [2025-04-13 21:34:00,384 INFO L79 Accepts]: Start accepts. Automaton has 2155 states and 5816 transitions. Word has length 35 [2025-04-13 21:34:00,384 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:00,384 INFO L485 AbstractCegarLoop]: Abstraction has 2155 states and 5816 transitions. [2025-04-13 21:34:00,384 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:34:00,385 INFO L278 IsEmpty]: Start isEmpty. Operand 2155 states and 5816 transitions. [2025-04-13 21:34:00,386 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-04-13 21:34:00,389 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:00,389 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:00,402 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 21:34:00,589 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 21:34:00,590 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:00,590 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1361924100, now seen corresponding path program 3 times [2025-04-13 21:34:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:00,590 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39126000] [2025-04-13 21:34:00,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:00,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-04-13 21:34:00,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:34:00,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:34:00,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:03,578 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39126000] [2025-04-13 21:34:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39126000] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:03,578 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524973154] [2025-04-13 21:34:03,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:03,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:03,582 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 21:34:03,583 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 21:34:03,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-04-13 21:34:04,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-04-13 21:34:04,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 21:34:04,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:04,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 21:34:04,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:04,080 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 21:34:04,102 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 21:34:04,136 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 21:34:04,172 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 21:34:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:04,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524973154] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:05,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-04-13 21:34:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126306328] [2025-04-13 21:34:05,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:05,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 21:34:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:05,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 21:34:05,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2025-04-13 21:34:05,167 INFO L87 Difference]: Start difference. First operand 2155 states and 5816 transitions. Second operand has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:06,174 INFO L93 Difference]: Finished difference Result 3549 states and 9094 transitions. [2025-04-13 21:34:06,174 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 21:34:06,175 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-04-13 21:34:06,175 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:06,187 INFO L225 Difference]: With dead ends: 3549 [2025-04-13 21:34:06,188 INFO L226 Difference]: Without dead ends: 3363 [2025-04-13 21:34:06,189 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=382, Invalid=1024, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 21:34:06,189 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 395 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:06,190 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 0 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 21:34:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2025-04-13 21:34:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 1997. [2025-04-13 21:34:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1993 states have (on average 2.6859006522829905) internal successors, (5353), 1996 states have internal predecessors, (5353), 0 states have call successors, (0), 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 21:34:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 5353 transitions. [2025-04-13 21:34:06,243 INFO L79 Accepts]: Start accepts. Automaton has 1997 states and 5353 transitions. Word has length 35 [2025-04-13 21:34:06,243 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:06,243 INFO L485 AbstractCegarLoop]: Abstraction has 1997 states and 5353 transitions. [2025-04-13 21:34:06,244 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:06,244 INFO L278 IsEmpty]: Start isEmpty. Operand 1997 states and 5353 transitions. [2025-04-13 21:34:06,246 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 21:34:06,247 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:06,247 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:06,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:06,447 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 21:34:06,447 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 21:34:06,448 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1799813618, now seen corresponding path program 2 times [2025-04-13 21:34:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:06,448 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785133491] [2025-04-13 21:34:06,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:34:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:06,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:34:06,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:34:06,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:34:06,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 21:34:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:07,331 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785133491] [2025-04-13 21:34:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785133491] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:07,331 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303128799] [2025-04-13 21:34:07,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:34:07,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:07,333 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 21:34:07,335 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 21:34:07,446 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:34:07,610 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-04-13 21:34:07,611 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:34:07,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:07,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 21:34:07,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:07,629 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 21:34:07,648 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 21:34:07,662 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 21:34:07,679 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 21:34:07,694 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 21:34:07,712 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 21:34:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:08,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-04-13 21:34:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303128799] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:08,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:08,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 25 [2025-04-13 21:34:08,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739180217] [2025-04-13 21:34:08,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:08,209 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 21:34:08,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:08,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 21:34:08,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2025-04-13 21:34:08,209 INFO L87 Difference]: Start difference. First operand 1997 states and 5353 transitions. Second operand has 26 states, 25 states have (on average 4.52) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:09,033 INFO L93 Difference]: Finished difference Result 6013 states and 15668 transitions. [2025-04-13 21:34:09,034 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 21:34:09,034 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.52) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-04-13 21:34:09,034 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:09,073 INFO L225 Difference]: With dead ends: 6013 [2025-04-13 21:34:09,073 INFO L226 Difference]: Without dead ends: 5916 [2025-04-13 21:34:09,078 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=688, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 21:34:09,079 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 347 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:09,080 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 0 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 21:34:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5916 states. [2025-04-13 21:34:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5916 to 2393. [2025-04-13 21:34:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 2389 states have (on average 2.69945583926329) internal successors, (6449), 2392 states have internal predecessors, (6449), 0 states have call successors, (0), 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 21:34:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 6449 transitions. [2025-04-13 21:34:09,253 INFO L79 Accepts]: Start accepts. Automaton has 2393 states and 6449 transitions. Word has length 43 [2025-04-13 21:34:09,253 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:09,253 INFO L485 AbstractCegarLoop]: Abstraction has 2393 states and 6449 transitions. [2025-04-13 21:34:09,254 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.52) internal successors, (113), 26 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:34:09,254 INFO L278 IsEmpty]: Start isEmpty. Operand 2393 states and 6449 transitions. [2025-04-13 21:34:09,260 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-04-13 21:34:09,260 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:09,260 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:09,273 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 21:34:09,461 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 21:34:09,461 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 21:34:09,461 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1299208190, now seen corresponding path program 4 times [2025-04-13 21:34:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:09,462 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319427346] [2025-04-13 21:34:09,462 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:34:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:09,494 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:34:09,729 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 21:34:09,729 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:34:09,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:11,806 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 21:34:11,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:11,807 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319427346] [2025-04-13 21:34:11,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319427346] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:11,807 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701256825] [2025-04-13 21:34:11,808 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:34:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:11,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:11,813 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 21:34:11,815 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 21:34:11,937 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-04-13 21:34:12,133 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 21:34:12,133 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:34:12,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:12,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 21:34:12,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:12,201 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 21:34:12,256 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 21:34:12,329 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 21:34:12,499 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:34:12,499 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 21:34:12,654 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 21:34:13,593 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 21:34:13,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:14,548 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 21:34:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701256825] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:14,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:14,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 27 [2025-04-13 21:34:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333540012] [2025-04-13 21:34:14,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:14,548 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 21:34:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:14,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 21:34:14,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-04-13 21:34:14,549 INFO L87 Difference]: Start difference. First operand 2393 states and 6449 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 21:34:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:19,595 INFO L93 Difference]: Finished difference Result 12173 states and 30503 transitions. [2025-04-13 21:34:19,596 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 21:34:19,596 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 21:34:19,596 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:19,628 INFO L225 Difference]: With dead ends: 12173 [2025-04-13 21:34:19,629 INFO L226 Difference]: Without dead ends: 11543 [2025-04-13 21:34:19,636 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 2 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 21:34:19,637 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 826 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:19,637 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 0 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 21:34:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11543 states. [2025-04-13 21:34:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11543 to 4051. [2025-04-13 21:34:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4051 states, 4047 states have (on average 2.8505065480602916) internal successors, (11536), 4050 states have internal predecessors, (11536), 0 states have call successors, (0), 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 21:34:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 11536 transitions. [2025-04-13 21:34:19,816 INFO L79 Accepts]: Start accepts. Automaton has 4051 states and 11536 transitions. Word has length 43 [2025-04-13 21:34:19,817 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:19,817 INFO L485 AbstractCegarLoop]: Abstraction has 4051 states and 11536 transitions. [2025-04-13 21:34:19,817 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 21:34:19,817 INFO L278 IsEmpty]: Start isEmpty. Operand 4051 states and 11536 transitions. [2025-04-13 21:34:19,820 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-04-13 21:34:19,820 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:19,820 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1] [2025-04-13 21:34:19,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:20,025 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 21:34:20,025 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 21:34:20,026 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1165084034, now seen corresponding path program 3 times [2025-04-13 21:34:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:20,026 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577671780] [2025-04-13 21:34:20,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:20,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-13 21:34:20,284 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 21:34:20,285 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-13 21:34:20,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:20,933 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 21:34:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:20,933 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577671780] [2025-04-13 21:34:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577671780] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:20,933 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438664272] [2025-04-13 21:34:20,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:20,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:20,936 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 21:34:20,937 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 21:34:21,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-04-13 21:34:21,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 21:34:21,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-13 21:34:21,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:21,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 21:34:21,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:21,802 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 21:34:21,818 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 21:34:21,837 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 21:34:21,854 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 21:34:21,875 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 21:34:21,895 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 21:34:21,915 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 21:34:21,938 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 21:34:21,960 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 21:34:21,981 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 21:34:22,002 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 21:34:22,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:22,136 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 21:34:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438664272] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:22,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2025-04-13 21:34:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909063167] [2025-04-13 21:34:22,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:22,137 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 21:34:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:22,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 21:34:22,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 21:34:22,138 INFO L87 Difference]: Start difference. First operand 4051 states and 11536 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 21:34:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:24,513 INFO L93 Difference]: Finished difference Result 37258 states and 108101 transitions. [2025-04-13 21:34:24,513 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-04-13 21:34:24,513 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 21:34:24,513 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:24,615 INFO L225 Difference]: With dead ends: 37258 [2025-04-13 21:34:24,615 INFO L226 Difference]: Without dead ends: 37127 [2025-04-13 21:34:24,638 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3441, Invalid=6261, Unknown=0, NotChecked=0, Total=9702 [2025-04-13 21:34:24,638 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 3414 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3414 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:24,640 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3414 Valid, 0 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 21:34:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37127 states. [2025-04-13 21:34:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37127 to 24577. [2025-04-13 21:34:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24577 states, 24573 states have (on average 2.9832336304073577) internal successors, (73307), 24576 states have internal predecessors, (73307), 0 states have call successors, (0), 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 21:34:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24577 states to 24577 states and 73307 transitions. [2025-04-13 21:34:25,270 INFO L79 Accepts]: Start accepts. Automaton has 24577 states and 73307 transitions. Word has length 45 [2025-04-13 21:34:25,270 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:25,270 INFO L485 AbstractCegarLoop]: Abstraction has 24577 states and 73307 transitions. [2025-04-13 21:34:25,270 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 21:34:25,270 INFO L278 IsEmpty]: Start isEmpty. Operand 24577 states and 73307 transitions. [2025-04-13 21:34:25,273 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-04-13 21:34:25,273 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:25,273 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:25,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:25,474 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 21:34:25,474 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 21:34:25,474 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1449928184, now seen corresponding path program 5 times [2025-04-13 21:34:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:25,474 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695212019] [2025-04-13 21:34:25,474 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:34:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:25,499 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 6 equivalence classes. [2025-04-13 21:34:25,690 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 21:34:25,691 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:34:25,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:27,855 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 21:34:27,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:27,855 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695212019] [2025-04-13 21:34:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695212019] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:27,855 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226333630] [2025-04-13 21:34:27,855 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:34:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:27,857 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 21:34:27,858 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 21:34:27,989 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 6 equivalence classes. [2025-04-13 21:34:28,329 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 51 of 51 statements. [2025-04-13 21:34:28,329 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:34:28,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:28,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 21:34:28,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:28,361 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 21:34:28,390 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 21:34:28,419 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 21:34:28,451 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 21:34:28,482 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 21:34:28,513 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 21:34:29,214 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 21:34:29,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:30,593 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 21:34:30,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226333630] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:30,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:30,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2025-04-13 21:34:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074645254] [2025-04-13 21:34:30,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:30,594 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 21:34:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:30,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 21:34:30,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 21:34:30,595 INFO L87 Difference]: Start difference. First operand 24577 states and 73307 transitions. Second operand has 37 states, 36 states have (on average 4.25) internal successors, (153), 37 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 21:34:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:33,618 INFO L93 Difference]: Finished difference Result 38670 states and 113305 transitions. [2025-04-13 21:34:33,619 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 21:34:33,619 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.25) internal successors, (153), 37 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 21:34:33,619 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:33,726 INFO L225 Difference]: With dead ends: 38670 [2025-04-13 21:34:33,726 INFO L226 Difference]: Without dead ends: 38280 [2025-04-13 21:34:33,750 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=767, Invalid=2893, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 21:34:33,751 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 650 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:33,751 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 0 Invalid, 3505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-04-13 21:34:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38280 states. [2025-04-13 21:34:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38280 to 27223. [2025-04-13 21:34:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27223 states, 27219 states have (on average 2.993203277122598) internal successors, (81472), 27222 states have internal predecessors, (81472), 0 states have call successors, (0), 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 21:34:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27223 states to 27223 states and 81472 transitions. [2025-04-13 21:34:34,473 INFO L79 Accepts]: Start accepts. Automaton has 27223 states and 81472 transitions. Word has length 51 [2025-04-13 21:34:34,473 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:34,473 INFO L485 AbstractCegarLoop]: Abstraction has 27223 states and 81472 transitions. [2025-04-13 21:34:34,473 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.25) internal successors, (153), 37 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 21:34:34,473 INFO L278 IsEmpty]: Start isEmpty. Operand 27223 states and 81472 transitions. [2025-04-13 21:34:34,476 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-04-13 21:34:34,477 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:34,477 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:34,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:34,677 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 21:34:34,677 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 21:34:34,680 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash 405684446, now seen corresponding path program 6 times [2025-04-13 21:34:34,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:34,680 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599717883] [2025-04-13 21:34:34,680 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:34:34,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:34,709 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 7 equivalence classes. [2025-04-13 21:34:35,548 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 21:34:35,548 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:34:35,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:38,815 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 21:34:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:38,816 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599717883] [2025-04-13 21:34:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599717883] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:38,816 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255316043] [2025-04-13 21:34:38,816 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:34:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:38,818 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 21:34:38,820 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 21:34:39,001 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 7 equivalence classes. [2025-04-13 21:34:40,038 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 59 of 59 statements. [2025-04-13 21:34:40,038 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:34:40,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:40,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-04-13 21:34:40,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:40,088 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 21:34:40,114 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 21:34:40,149 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 21:34:40,184 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 21:34:40,223 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 21:34:40,268 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 21:34:40,314 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 21:34:41,219 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 21:34:41,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:42,774 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 21:34:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255316043] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:42,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 36 [2025-04-13 21:34:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364380949] [2025-04-13 21:34:42,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:42,775 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 21:34:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:42,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 21:34:42,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 21:34:42,776 INFO L87 Difference]: Start difference. First operand 27223 states and 81472 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 21:34:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:45,888 INFO L93 Difference]: Finished difference Result 41051 states and 120555 transitions. [2025-04-13 21:34:45,888 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 21:34:45,889 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 21:34:45,889 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:46,023 INFO L225 Difference]: With dead ends: 41051 [2025-04-13 21:34:46,023 INFO L226 Difference]: Without dead ends: 40547 [2025-04-13 21:34:46,049 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 21:34:46,050 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 695 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:46,050 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 0 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 21:34:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40547 states. [2025-04-13 21:34:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40547 to 26641. [2025-04-13 21:34:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26641 states, 26637 states have (on average 2.9930923152006605) internal successors, (79727), 26640 states have internal predecessors, (79727), 0 states have call successors, (0), 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 21:34:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26641 states to 26641 states and 79727 transitions. [2025-04-13 21:34:46,989 INFO L79 Accepts]: Start accepts. Automaton has 26641 states and 79727 transitions. Word has length 59 [2025-04-13 21:34:46,989 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:46,989 INFO L485 AbstractCegarLoop]: Abstraction has 26641 states and 79727 transitions. [2025-04-13 21:34:46,989 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 21:34:46,989 INFO L278 IsEmpty]: Start isEmpty. Operand 26641 states and 79727 transitions. [2025-04-13 21:34:46,992 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-04-13 21:34:46,992 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:46,993 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:47,014 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 21:34:47,193 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 21:34:47,194 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 21:34:47,194 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -275487545, now seen corresponding path program 3 times [2025-04-13 21:34:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:47,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182769174] [2025-04-13 21:34:47,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:47,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 63 statements into 12 equivalence classes. [2025-04-13 21:34:47,256 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 63 statements. [2025-04-13 21:34:47,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 21:34:47,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-04-13 21:34:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:47,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182769174] [2025-04-13 21:34:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182769174] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:47,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360230621] [2025-04-13 21:34:47,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:34:47,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:47,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:47,745 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 21:34:47,746 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 21:34:47,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 63 statements into 12 equivalence classes. [2025-04-13 21:34:48,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 63 statements. [2025-04-13 21:34:48,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 21:34:48,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:48,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 21:34:48,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:48,070 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 21:34:48,424 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 80 treesize of output 65 [2025-04-13 21:34:48,436 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 21:34:48,436 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 64 [2025-04-13 21:34:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-04-13 21:34:48,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2025-04-13 21:34:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360230621] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:48,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:48,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-04-13 21:34:48,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246933485] [2025-04-13 21:34:48,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:48,623 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 21:34:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:48,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 21:34:48,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-13 21:34:48,624 INFO L87 Difference]: Start difference. First operand 26641 states and 79727 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 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 21:34:50,106 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 21:34:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:50,405 INFO L93 Difference]: Finished difference Result 44424 states and 127174 transitions. [2025-04-13 21:34:50,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 21:34:50,406 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 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 63 [2025-04-13 21:34:50,406 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:50,533 INFO L225 Difference]: With dead ends: 44424 [2025-04-13 21:34:50,533 INFO L226 Difference]: Without dead ends: 44418 [2025-04-13 21:34:50,550 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-04-13 21:34:50,551 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:50,551 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 420 Invalid, 1 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 21:34:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44418 states. [2025-04-13 21:34:51,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44418 to 34191. [2025-04-13 21:34:51,327 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 21:34:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34191 states to 34191 states and 101506 transitions. [2025-04-13 21:34:51,423 INFO L79 Accepts]: Start accepts. Automaton has 34191 states and 101506 transitions. Word has length 63 [2025-04-13 21:34:51,423 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:51,423 INFO L485 AbstractCegarLoop]: Abstraction has 34191 states and 101506 transitions. [2025-04-13 21:34:51,423 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 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 21:34:51,423 INFO L278 IsEmpty]: Start isEmpty. Operand 34191 states and 101506 transitions. [2025-04-13 21:34:51,426 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-04-13 21:34:51,426 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:51,426 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:51,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 21:34:51,627 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 21:34:51,627 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:51,629 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1537174622, now seen corresponding path program 4 times [2025-04-13 21:34:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:51,630 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117636254] [2025-04-13 21:34:51,630 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:34:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:51,659 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-04-13 21:34:51,682 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:34:51,682 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:34:51,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:34:53,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:53,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117636254] [2025-04-13 21:34:53,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117636254] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:34:53,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021765837] [2025-04-13 21:34:53,636 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:34:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:34:53,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:53,639 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 21:34:53,655 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 21:34:53,978 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-04-13 21:34:54,145 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:34:54,146 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:34:54,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:54,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 21:34:54,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:34:54,172 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 21:34:54,187 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 21:34:54,202 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 21:34:54,219 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-13 21:34:54,236 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 21:34:54,253 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 21:34:54,271 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 21:34:54,288 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 21:34:54,306 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 21:34:54,325 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 21:34:54,343 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 21:34:54,635 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 45 treesize of output 31 [2025-04-13 21:34:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:34:54,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:34:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 87 proven. 20 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:34:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021765837] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:34:54,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:34:54,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 7] total 35 [2025-04-13 21:34:54,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644878701] [2025-04-13 21:34:54,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:34:54,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 21:34:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:54,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 21:34:54,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 21:34:54,861 INFO L87 Difference]: Start difference. First operand 34191 states and 101506 transitions. Second operand has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 36 states have internal predecessors, (158), 0 states have call successors, (0), 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 21:34:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:56,471 INFO L93 Difference]: Finished difference Result 95714 states and 277324 transitions. [2025-04-13 21:34:56,472 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 21:34:56,472 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 36 states have internal predecessors, (158), 0 states have call successors, (0), 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 21:34:56,472 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:56,788 INFO L225 Difference]: With dead ends: 95714 [2025-04-13 21:34:56,788 INFO L226 Difference]: Without dead ends: 95554 [2025-04-13 21:34:56,828 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=614, Invalid=1366, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 21:34:56,829 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 577 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:56,829 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 0 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 21:34:56,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95554 states. [2025-04-13 21:34:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95554 to 39925. [2025-04-13 21:34:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39925 states, 39921 states have (on average 2.9620750983191804) internal successors, (118249), 39924 states have internal predecessors, (118249), 0 states have call successors, (0), 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 21:34:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39925 states to 39925 states and 118249 transitions. [2025-04-13 21:34:58,335 INFO L79 Accepts]: Start accepts. Automaton has 39925 states and 118249 transitions. Word has length 67 [2025-04-13 21:34:58,335 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:58,335 INFO L485 AbstractCegarLoop]: Abstraction has 39925 states and 118249 transitions. [2025-04-13 21:34:58,336 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.514285714285714) internal successors, (158), 36 states have internal predecessors, (158), 0 states have call successors, (0), 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 21:34:58,336 INFO L278 IsEmpty]: Start isEmpty. Operand 39925 states and 118249 transitions. [2025-04-13 21:34:58,339 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-04-13 21:34:58,339 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:58,340 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:34:58,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:58,540 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 21:34:58,540 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:34:58,541 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -20321260, now seen corresponding path program 7 times [2025-04-13 21:34:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:58,541 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015471744] [2025-04-13 21:34:58,542 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:34:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:58,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-04-13 21:34:59,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:34:59,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:34:59,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:02,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:35:02,831 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015471744] [2025-04-13 21:35:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015471744] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:35:02,831 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047203140] [2025-04-13 21:35:02,831 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:35:02,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:35:02,833 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 21:35:02,834 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 21:35:03,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-04-13 21:35:03,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-04-13 21:35:03,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:35:03,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:03,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-04-13 21:35:03,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:35:03,186 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 23 treesize of output 1 [2025-04-13 21:35:03,239 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 21:35:03,294 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 21:35:03,357 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 21:35:03,424 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 21:35:03,506 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 21:35:03,599 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:35:03,599 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 21:35:03,730 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 21:35:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:06,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 14 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047203140] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:08,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:08,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 16] total 42 [2025-04-13 21:35:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566889403] [2025-04-13 21:35:08,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:08,526 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-13 21:35:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:08,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-13 21:35:08,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 21:35:08,527 INFO L87 Difference]: Start difference. First operand 39925 states and 118249 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 21:35:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:35:34,792 INFO L93 Difference]: Finished difference Result 105453 states and 288710 transitions. [2025-04-13 21:35:34,792 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2025-04-13 21:35:34,792 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 21:35:34,792 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:35:35,310 INFO L225 Difference]: With dead ends: 105453 [2025-04-13 21:35:35,310 INFO L226 Difference]: Without dead ends: 103599 [2025-04-13 21:35:35,339 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12533 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=7759, Invalid=28531, Unknown=0, NotChecked=0, Total=36290 [2025-04-13 21:35:35,340 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1607 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7415 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 7415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:35:35,340 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 0 Invalid, 7606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 7415 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-04-13 21:35:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103599 states. [2025-04-13 21:35:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103599 to 47815. [2025-04-13 21:35:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47815 states, 47811 states have (on average 2.990483361569513) internal successors, (142978), 47814 states have internal predecessors, (142978), 0 states have call successors, (0), 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 21:35:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47815 states to 47815 states and 142978 transitions. [2025-04-13 21:35:37,248 INFO L79 Accepts]: Start accepts. Automaton has 47815 states and 142978 transitions. Word has length 67 [2025-04-13 21:35:37,249 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:35:37,249 INFO L485 AbstractCegarLoop]: Abstraction has 47815 states and 142978 transitions. [2025-04-13 21:35:37,249 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 21:35:37,249 INFO L278 IsEmpty]: Start isEmpty. Operand 47815 states and 142978 transitions. [2025-04-13 21:35:37,256 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-04-13 21:35:37,256 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:35:37,256 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:35:37,266 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 21:35:37,456 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 21:35:37,456 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:35:37,458 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:35:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2095936356, now seen corresponding path program 5 times [2025-04-13 21:35:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:35:37,459 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335971900] [2025-04-13 21:35:37,459 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:35:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:35:37,496 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 75 statements into 13 equivalence classes. [2025-04-13 21:35:37,698 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:35:37,699 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-04-13 21:35:37,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 21:35:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:35:39,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335971900] [2025-04-13 21:35:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335971900] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:35:39,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100752797] [2025-04-13 21:35:39,646 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:35:39,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:35:39,648 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 21:35:39,649 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 21:35:39,851 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 75 statements into 13 equivalence classes. [2025-04-13 21:35:40,619 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:35:40,619 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-04-13 21:35:40,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:40,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 21:35:40,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:35:40,650 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 21:35:40,667 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 21:35:40,682 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 21:35:40,700 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 21:35:40,717 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 21:35:40,734 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 21:35:40,754 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 21:35:40,775 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 21:35:40,797 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 21:35:40,820 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 21:35:40,838 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 21:35:40,860 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 21:35:41,320 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 21:35:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:41,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 135 proven. 44 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:35:41,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100752797] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:41,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:41,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 9] total 40 [2025-04-13 21:35:41,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652863950] [2025-04-13 21:35:41,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:41,678 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-04-13 21:35:41,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:41,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-04-13 21:35:41,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 21:35:41,679 INFO L87 Difference]: Start difference. First operand 47815 states and 142978 transitions. Second operand has 41 states, 40 states have (on average 4.55) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 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 21:35:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:35:43,926 INFO L93 Difference]: Finished difference Result 123207 states and 360366 transitions. [2025-04-13 21:35:43,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 21:35:43,927 INFO L79 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.55) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 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 21:35:43,927 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:35:44,362 INFO L225 Difference]: With dead ends: 123207 [2025-04-13 21:35:44,363 INFO L226 Difference]: Without dead ends: 123026 [2025-04-13 21:35:44,416 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 21:35:44,416 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 769 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4371 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:35:44,417 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 0 Invalid, 4458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4371 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 21:35:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123026 states. [2025-04-13 21:35:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123026 to 45653. [2025-04-13 21:35:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45653 states, 45649 states have (on average 2.982212096650529) internal successors, (136135), 45652 states have internal predecessors, (136135), 0 states have call successors, (0), 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 21:35:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45653 states to 45653 states and 136135 transitions. [2025-04-13 21:35:46,755 INFO L79 Accepts]: Start accepts. Automaton has 45653 states and 136135 transitions. Word has length 75 [2025-04-13 21:35:46,755 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:35:46,755 INFO L485 AbstractCegarLoop]: Abstraction has 45653 states and 136135 transitions. [2025-04-13 21:35:46,755 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.55) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 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 21:35:46,755 INFO L278 IsEmpty]: Start isEmpty. Operand 45653 states and 136135 transitions. [2025-04-13 21:35:46,761 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-04-13 21:35:46,761 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:35:46,761 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:35:46,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-04-13 21:35:46,962 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 21:35:46,962 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:35:46,963 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:35:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 10996762, now seen corresponding path program 8 times [2025-04-13 21:35:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:35:46,964 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938548125] [2025-04-13 21:35:46,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:35:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:35:46,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-04-13 21:35:47,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:35:47,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:35:47,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:50,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:35:50,984 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938548125] [2025-04-13 21:35:50,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938548125] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:35:50,984 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104796201] [2025-04-13 21:35:50,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:35:50,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:35:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:35:50,986 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 21:35:50,987 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 21:35:51,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-04-13 21:35:51,364 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-04-13 21:35:51,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:35:51,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:35:51,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 2073 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 21:35:51,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:35:51,397 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 15 treesize of output 1 [2025-04-13 21:35:51,418 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 21:35:51,450 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 21:35:51,487 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 21:35:51,521 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 21:35:51,561 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 21:35:51,597 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 21:35:51,634 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 21:35:51,669 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 21:35:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:53,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:35:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 16 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:35:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104796201] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:35:55,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:35:55,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 18] total 44 [2025-04-13 21:35:55,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300265274] [2025-04-13 21:35:55,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:35:55,758 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-13 21:35:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:35:55,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-13 21:35:55,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 21:35:55,759 INFO L87 Difference]: Start difference. First operand 45653 states and 136135 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 21:36:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:01,315 INFO L93 Difference]: Finished difference Result 60517 states and 176810 transitions. [2025-04-13 21:36:01,316 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 21:36:01,316 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 21:36:01,316 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:01,633 INFO L225 Difference]: With dead ends: 60517 [2025-04-13 21:36:01,633 INFO L226 Difference]: Without dead ends: 59749 [2025-04-13 21:36:01,646 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1556, Invalid=5250, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 21:36:01,647 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1082 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4317 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 4317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:01,647 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 0 Invalid, 4462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 4317 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-04-13 21:36:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59749 states. [2025-04-13 21:36:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59749 to 43035. [2025-04-13 21:36:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43035 states, 43031 states have (on average 2.9799911691571195) internal successors, (128232), 43034 states have internal predecessors, (128232), 0 states have call successors, (0), 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 21:36:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43035 states to 43035 states and 128232 transitions. [2025-04-13 21:36:02,724 INFO L79 Accepts]: Start accepts. Automaton has 43035 states and 128232 transitions. Word has length 75 [2025-04-13 21:36:02,724 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:02,724 INFO L485 AbstractCegarLoop]: Abstraction has 43035 states and 128232 transitions. [2025-04-13 21:36:02,724 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 21:36:02,724 INFO L278 IsEmpty]: Start isEmpty. Operand 43035 states and 128232 transitions. [2025-04-13 21:36:02,730 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-04-13 21:36:02,731 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:02,731 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:02,743 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 21:36:02,931 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 21:36:02,931 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 21:36:02,935 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash -472526849, now seen corresponding path program 6 times [2025-04-13 21:36:02,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:02,936 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377851744] [2025-04-13 21:36:02,936 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:36:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:02,969 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 14 equivalence classes. [2025-04-13 21:36:03,663 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 43 of 79 statements. [2025-04-13 21:36:03,663 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 21:36:03,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 63 proven. 22 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2025-04-13 21:36:04,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:04,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377851744] [2025-04-13 21:36:04,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377851744] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:04,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012470662] [2025-04-13 21:36:04,283 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:36:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:04,286 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 21:36:04,287 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 21:36:04,536 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 14 equivalence classes. [2025-04-13 21:36:04,804 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 43 of 79 statements. [2025-04-13 21:36:04,804 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-04-13 21:36:04,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:04,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 21:36:04,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:04,826 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 21:36:05,682 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 126 treesize of output 105 [2025-04-13 21:36:05,733 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 21:36:05,733 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 242 [2025-04-13 21:36:07,831 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 21:36:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 63 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-04-13 21:36:07,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-04-13 21:36:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012470662] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:08,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2025-04-13 21:36:08,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434855657] [2025-04-13 21:36:08,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:08,037 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 21:36:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:08,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 21:36:08,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-04-13 21:36:08,038 INFO L87 Difference]: Start difference. First operand 43035 states and 128232 transitions. Second operand has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 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 21:36:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:09,861 INFO L93 Difference]: Finished difference Result 111806 states and 310769 transitions. [2025-04-13 21:36:09,861 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 21:36:09,861 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 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 21:36:09,862 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:10,226 INFO L225 Difference]: With dead ends: 111806 [2025-04-13 21:36:10,226 INFO L226 Difference]: Without dead ends: 111800 [2025-04-13 21:36:10,272 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 21:36:10,273 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:10,273 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 21:36:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111800 states. [2025-04-13 21:36:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111800 to 64469. [2025-04-13 21:36:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64469 states, 64465 states have (on average 2.97750717443574) internal successors, (191945), 64468 states have internal predecessors, (191945), 0 states have call successors, (0), 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 21:36:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64469 states to 64469 states and 191945 transitions. [2025-04-13 21:36:12,716 INFO L79 Accepts]: Start accepts. Automaton has 64469 states and 191945 transitions. Word has length 79 [2025-04-13 21:36:12,717 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:12,717 INFO L485 AbstractCegarLoop]: Abstraction has 64469 states and 191945 transitions. [2025-04-13 21:36:12,717 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 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 21:36:12,717 INFO L278 IsEmpty]: Start isEmpty. Operand 64469 states and 191945 transitions. [2025-04-13 21:36:12,728 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-04-13 21:36:12,728 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:12,728 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:12,975 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2025-04-13 21:36:12,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-04-13 21:36:12,980 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 21:36:12,980 WARN L724 oredProcess$PipePump]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] The stream was forcibly closed: stdIn [2025-04-13 21:36:12,980 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 21:36:12,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1348936388, now seen corresponding path program 7 times [2025-04-13 21:36:12,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:12,983 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42165588] [2025-04-13 21:36:12,983 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:36:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:13,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-04-13 21:36:13,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:13,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:13,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:15,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42165588] [2025-04-13 21:36:15,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42165588] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:15,154 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944748156] [2025-04-13 21:36:15,154 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 21:36:15,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:15,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:15,156 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 21:36:15,157 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 21:36:15,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-04-13 21:36:15,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:15,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:15,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:15,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 21:36:15,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:15,666 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 21:36:15,689 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 21:36:15,709 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 21:36:15,737 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 21:36:15,761 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 21:36:15,786 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 8 treesize of output 1 [2025-04-13 21:36:15,811 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 21:36:15,835 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 21:36:15,860 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 21:36:15,888 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 21:36:15,913 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 21:36:15,941 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 21:36:15,968 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 21:36:16,900 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 21:36:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:16,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 143 proven. 66 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-04-13 21:36:17,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944748156] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:17,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:17,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 11] total 45 [2025-04-13 21:36:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688940213] [2025-04-13 21:36:17,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:17,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 21:36:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:17,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 21:36:17,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1579, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 21:36:17,495 INFO L87 Difference]: Start difference. First operand 64469 states and 191945 transitions. Second operand has 46 states, 45 states have (on average 4.644444444444445) internal successors, (209), 46 states have internal predecessors, (209), 0 states have call successors, (0), 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 21:36:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:21,533 INFO L93 Difference]: Finished difference Result 198120 states and 580073 transitions. [2025-04-13 21:36:21,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-04-13 21:36:21,534 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.644444444444445) internal successors, (209), 46 states have internal predecessors, (209), 0 states have call successors, (0), 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 21:36:21,534 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:22,745 INFO L225 Difference]: With dead ends: 198120 [2025-04-13 21:36:22,745 INFO L226 Difference]: Without dead ends: 197918 [2025-04-13 21:36:22,805 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1428, Invalid=2862, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 21:36:22,806 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1284 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6636 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 6636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:22,806 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 0 Invalid, 6825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 6636 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-04-13 21:36:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197918 states. [2025-04-13 21:36:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197918 to 77041. [2025-04-13 21:36:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77041 states, 77037 states have (on average 2.982553837766268) internal successors, (229767), 77040 states have internal predecessors, (229767), 0 states have call successors, (0), 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 21:36:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77041 states to 77041 states and 229767 transitions. [2025-04-13 21:36:26,182 INFO L79 Accepts]: Start accepts. Automaton has 77041 states and 229767 transitions. Word has length 83 [2025-04-13 21:36:26,182 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:26,182 INFO L485 AbstractCegarLoop]: Abstraction has 77041 states and 229767 transitions. [2025-04-13 21:36:26,183 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.644444444444445) internal successors, (209), 46 states have internal predecessors, (209), 0 states have call successors, (0), 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 21:36:26,183 INFO L278 IsEmpty]: Start isEmpty. Operand 77041 states and 229767 transitions. [2025-04-13 21:36:26,192 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-04-13 21:36:26,192 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:26,192 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:26,203 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 21:36:26,392 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 21:36:26,392 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 21:36:26,396 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1524057790, now seen corresponding path program 9 times [2025-04-13 21:36:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:26,397 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362448192] [2025-04-13 21:36:26,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:36:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:26,428 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 10 equivalence classes. [2025-04-13 21:36:29,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:29,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-04-13 21:36:29,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 55 proven. 366 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 21:36:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:34,250 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362448192] [2025-04-13 21:36:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362448192] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:34,250 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018031957] [2025-04-13 21:36:34,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:36:34,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:34,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:34,252 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 21:36:34,252 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 21:36:34,500 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 83 statements into 10 equivalence classes. [2025-04-13 21:36:35,716 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 83 of 83 statements. [2025-04-13 21:36:35,716 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-04-13 21:36:35,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:35,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-04-13 21:36:35,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:35,780 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 21:36:35,824 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 21:36:35,870 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 21:36:35,921 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 21:36:35,969 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 21:36:36,018 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 21:36:36,063 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 21:36:36,103 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 21:36:36,148 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 21:36:36,193 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 21:36:38,004 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 21:36:38,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:41,845 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 21:36:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018031957] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:41,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 59 [2025-04-13 21:36:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134480327] [2025-04-13 21:36:41,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:41,846 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-04-13 21:36:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:41,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-04-13 21:36:41,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=2910, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 21:36:41,847 INFO L87 Difference]: Start difference. First operand 77041 states and 229767 transitions. Second operand has 60 states, 59 states have (on average 4.220338983050848) internal successors, (249), 60 states have internal predecessors, (249), 0 states have call successors, (0), 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 21:36:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:36:51,777 INFO L93 Difference]: Finished difference Result 94671 states and 278086 transitions. [2025-04-13 21:36:51,778 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-04-13 21:36:51,778 INFO L79 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.220338983050848) internal successors, (249), 60 states have internal predecessors, (249), 0 states have call successors, (0), 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 21:36:51,778 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:36:52,094 INFO L225 Difference]: With dead ends: 94671 [2025-04-13 21:36:52,094 INFO L226 Difference]: Without dead ends: 93753 [2025-04-13 21:36:52,133 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2385, Invalid=8745, Unknown=0, NotChecked=0, Total=11130 [2025-04-13 21:36:52,133 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1543 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7708 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 7708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-04-13 21:36:52,133 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 0 Invalid, 7904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 7708 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-04-13 21:36:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93753 states. [2025-04-13 21:36:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93753 to 70955. [2025-04-13 21:36:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70955 states, 70951 states have (on average 2.9788445546926754) internal successors, (211352), 70954 states have internal predecessors, (211352), 0 states have call successors, (0), 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 21:36:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70955 states to 70955 states and 211352 transitions. [2025-04-13 21:36:54,239 INFO L79 Accepts]: Start accepts. Automaton has 70955 states and 211352 transitions. Word has length 83 [2025-04-13 21:36:54,239 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:36:54,239 INFO L485 AbstractCegarLoop]: Abstraction has 70955 states and 211352 transitions. [2025-04-13 21:36:54,240 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.220338983050848) internal successors, (249), 60 states have internal predecessors, (249), 0 states have call successors, (0), 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 21:36:54,240 INFO L278 IsEmpty]: Start isEmpty. Operand 70955 states and 211352 transitions. [2025-04-13 21:36:54,252 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-04-13 21:36:54,252 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:54,252 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:36:54,267 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 21:36:54,453 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 21:36:54,453 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 21:36:54,453 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash -481665395, now seen corresponding path program 8 times [2025-04-13 21:36:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:54,454 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661787217] [2025-04-13 21:36:54,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:36:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:54,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-04-13 21:36:54,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-04-13 21:36:54,820 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:36:54,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:36:57,126 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661787217] [2025-04-13 21:36:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661787217] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:36:57,126 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647278042] [2025-04-13 21:36:57,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:36:57,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:36:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:57,128 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 21:36:57,129 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 21:36:57,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-04-13 21:36:57,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-04-13 21:36:57,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:36:57,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:36:57,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 21:36:57,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:36:57,589 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 21:36:57,610 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 21:36:57,633 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 21:36:57,655 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 21:36:57,675 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 21:36:57,693 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 21:36:57,710 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 21:36:57,730 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 21:36:57,749 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 21:36:57,768 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 21:36:57,787 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 21:36:57,809 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 21:36:57,829 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 21:36:57,856 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 21:36:58,332 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 21:36:58,345 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 21:36:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:36:58,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:36:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 89 proven. 39 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-04-13 21:36:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647278042] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:36:58,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:36:58,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 9] total 45 [2025-04-13 21:36:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185269051] [2025-04-13 21:36:58,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:36:58,675 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-04-13 21:36:58,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:36:58,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-04-13 21:36:58,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 21:36:58,676 INFO L87 Difference]: Start difference. First operand 70955 states and 211352 transitions. Second operand has 46 states, 45 states have (on average 4.555555555555555) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 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 21:37:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:37:02,684 INFO L93 Difference]: Finished difference Result 229639 states and 667035 transitions. [2025-04-13 21:37:02,685 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 21:37:02,685 INFO L79 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.555555555555555) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 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 87 [2025-04-13 21:37:02,685 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:37:03,880 INFO L225 Difference]: With dead ends: 229639 [2025-04-13 21:37:03,880 INFO L226 Difference]: Without dead ends: 229416 [2025-04-13 21:37:03,955 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1399, Invalid=2891, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 21:37:03,956 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1081 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7152 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 7152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:37:03,956 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 0 Invalid, 7303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 7152 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-04-13 21:37:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229416 states. [2025-04-13 21:37:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229416 to 67757. [2025-04-13 21:37:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67757 states, 67753 states have (on average 2.968532758697032) internal successors, (201127), 67756 states have internal predecessors, (201127), 0 states have call successors, (0), 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 21:37:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67757 states to 67757 states and 201127 transitions. [2025-04-13 21:37:08,038 INFO L79 Accepts]: Start accepts. Automaton has 67757 states and 201127 transitions. Word has length 87 [2025-04-13 21:37:08,038 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:37:08,038 INFO L485 AbstractCegarLoop]: Abstraction has 67757 states and 201127 transitions. [2025-04-13 21:37:08,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.555555555555555) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 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 21:37:08,038 INFO L278 IsEmpty]: Start isEmpty. Operand 67757 states and 201127 transitions. [2025-04-13 21:37:08,052 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-04-13 21:37:08,052 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:37:08,052 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:37:08,063 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 21:37:08,252 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 21:37:08,253 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:37:08,256 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:37:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash 528789994, now seen corresponding path program 9 times [2025-04-13 21:37:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:37:08,257 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017089247] [2025-04-13 21:37:08,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:37:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:37:08,289 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 17 equivalence classes. [2025-04-13 21:37:08,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 43 of 91 statements. [2025-04-13 21:37:08,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:37:08,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 226 proven. 71 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2025-04-13 21:37:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:37:09,902 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017089247] [2025-04-13 21:37:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017089247] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:37:09,903 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512285552] [2025-04-13 21:37:09,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:37:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:09,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:37:09,905 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 21:37:09,906 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 21:37:10,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 91 statements into 17 equivalence classes. [2025-04-13 21:37:10,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 43 of 91 statements. [2025-04-13 21:37:10,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:37:10,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:10,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 21:37:10,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:37:10,805 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 21:37:10,851 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 21:37:10,900 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 21:37:10,962 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 21:37:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 256 proven. 68 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2025-04-13 21:37:13,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 245 proven. 54 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2025-04-13 21:37:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512285552] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:13,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 24 [2025-04-13 21:37:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272460655] [2025-04-13 21:37:13,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:13,680 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 21:37:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:13,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 21:37:13,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2025-04-13 21:37:13,681 INFO L87 Difference]: Start difference. First operand 67757 states and 201127 transitions. Second operand has 25 states, 24 states have (on average 5.375) internal successors, (129), 25 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 21:37:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:37:15,845 INFO L93 Difference]: Finished difference Result 148867 states and 415281 transitions. [2025-04-13 21:37:15,846 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 21:37:15,846 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.375) internal successors, (129), 25 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 91 [2025-04-13 21:37:15,846 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:37:16,375 INFO L225 Difference]: With dead ends: 148867 [2025-04-13 21:37:16,375 INFO L226 Difference]: Without dead ends: 148861 [2025-04-13 21:37:16,438 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=501, Invalid=1851, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 21:37:16,438 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 468 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:37:16,438 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 0 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 21:37:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148861 states. [2025-04-13 21:37:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148861 to 62045. [2025-04-13 21:37:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62045 states, 62041 states have (on average 2.962218532905659) internal successors, (183779), 62044 states have internal predecessors, (183779), 0 states have call successors, (0), 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 21:37:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62045 states to 62045 states and 183779 transitions. [2025-04-13 21:37:19,345 INFO L79 Accepts]: Start accepts. Automaton has 62045 states and 183779 transitions. Word has length 91 [2025-04-13 21:37:19,345 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:37:19,346 INFO L485 AbstractCegarLoop]: Abstraction has 62045 states and 183779 transitions. [2025-04-13 21:37:19,346 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.375) internal successors, (129), 25 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 21:37:19,346 INFO L278 IsEmpty]: Start isEmpty. Operand 62045 states and 183779 transitions. [2025-04-13 21:37:19,359 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-04-13 21:37:19,359 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:37:19,360 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:37:19,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-04-13 21:37:19,560 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 21:37:19,560 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:37:19,564 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:37:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash -485017050, now seen corresponding path program 10 times [2025-04-13 21:37:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:37:19,564 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142726109] [2025-04-13 21:37:19,564 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:37:19,780 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:21,182 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 21:37:21,182 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:21,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:26,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:37:26,472 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142726109] [2025-04-13 21:37:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142726109] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:37:26,472 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530209827] [2025-04-13 21:37:26,472 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:37:26,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:37:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:37:26,474 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 21:37:26,475 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 21:37:26,771 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-04-13 21:37:27,013 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 21:37:27,013 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:37:27,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:37:27,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-04-13 21:37:27,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:37:27,061 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 21:37:27,131 INFO L325 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2025-04-13 21:37:27,131 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 21:37:27,212 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 21:37:27,280 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 21:37:27,364 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 21:37:27,448 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 21:37:27,553 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 21:37:27,670 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 21:37:27,862 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 21:37:28,006 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 21:37:28,147 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 21:37:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 20 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:32,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:37:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 20 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:37:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530209827] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:37:37,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:37:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 58 [2025-04-13 21:37:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12333291] [2025-04-13 21:37:37,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:37:37,001 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:37:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:37:37,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:37:37,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=3034, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:37:37,002 INFO L87 Difference]: Start difference. First operand 62045 states and 183779 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 21:39:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:39:01,586 INFO L93 Difference]: Finished difference Result 160557 states and 431631 transitions. [2025-04-13 21:39:01,586 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2025-04-13 21:39:01,587 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 21:39:01,587 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:39:02,112 INFO L225 Difference]: With dead ends: 160557 [2025-04-13 21:39:02,112 INFO L226 Difference]: Without dead ends: 156561 [2025-04-13 21:39:02,190 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 344 SyntacticMatches, 6 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44888 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=23634, Invalid=92306, Unknown=0, NotChecked=0, Total=115940 [2025-04-13 21:39:02,191 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2694 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15157 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 15157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:39:02,191 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 0 Invalid, 15503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [346 Valid, 15157 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2025-04-13 21:39:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156561 states. [2025-04-13 21:39:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156561 to 75335. [2025-04-13 21:39:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75335 states, 75331 states have (on average 2.976755917218675) internal successors, (224242), 75334 states have internal predecessors, (224242), 0 states have call successors, (0), 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 21:39:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75335 states to 75335 states and 224242 transitions. [2025-04-13 21:39:05,638 INFO L79 Accepts]: Start accepts. Automaton has 75335 states and 224242 transitions. Word has length 91 [2025-04-13 21:39:05,638 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:39:05,638 INFO L485 AbstractCegarLoop]: Abstraction has 75335 states and 224242 transitions. [2025-04-13 21:39:05,638 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 21:39:05,638 INFO L278 IsEmpty]: Start isEmpty. Operand 75335 states and 224242 transitions. [2025-04-13 21:39:05,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-04-13 21:39:05,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:39:05,655 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1] [2025-04-13 21:39:05,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 21:39:05,855 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-13 21:39:05,856 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:39:05,857 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:39:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash 135986982, now seen corresponding path program 4 times [2025-04-13 21:39:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:39:05,857 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209033821] [2025-04-13 21:39:05,857 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:39:05,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:39:05,893 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-04-13 21:39:05,918 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 21:39:05,918 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:39:05,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:39:08,231 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 21:39:08,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:39:08,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209033821] [2025-04-13 21:39:08,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209033821] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:39:08,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399052035] [2025-04-13 21:39:08,232 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:39:08,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:39:08,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:39:08,234 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:39:08,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 21:39:08,549 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-04-13 21:39:08,732 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 21:39:08,733 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:39:08,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:39:08,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 21:39:08,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:39:08,761 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 21:39:08,782 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 21:39:08,803 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 21:39:08,824 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 21:39:08,841 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 21:39:08,865 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 21:39:08,886 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 21:39:08,908 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 21:39:08,935 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 21:39:08,958 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 21:39:08,983 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 21:39:09,007 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 21:39:09,035 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 21:39:09,063 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 21:39:09,089 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 21:39:09,117 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 21:39:09,146 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 21:39:09,173 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 21:39:09,202 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 21:39:09,231 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 21:39:09,264 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 21:39:09,296 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 21:39:09,323 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 21:39:09,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:39:09,868 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 21:39:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399052035] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:39:09,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:39:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:39:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388939715] [2025-04-13 21:39:09,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:39:09,870 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:39:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:39:09,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:39:09,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=3244, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:39:09,871 INFO L87 Difference]: Start difference. First operand 75335 states and 224242 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 21:39:44,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:39:44,679 INFO L93 Difference]: Finished difference Result 1560902 states and 4713291 transitions. [2025-04-13 21:39:44,680 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 345 states. [2025-04-13 21:39:44,680 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 21:39:44,680 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:39:56,281 INFO L225 Difference]: With dead ends: 1560902 [2025-04-13 21:39:56,282 INFO L226 Difference]: Without dead ends: 1560645 [2025-04-13 21:39:57,063 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56671 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=35096, Invalid=83584, Unknown=0, NotChecked=0, Total=118680 [2025-04-13 21:39:57,065 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 21754 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4430 mSolverCounterSat, 6211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21754 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6211 IncrementalHoareTripleChecker+Valid, 4430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:39:57,065 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21754 Valid, 0 Invalid, 10641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6211 Valid, 4430 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-04-13 21:39:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560645 states. [2025-04-13 21:40:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560645 to 1141287. [2025-04-13 21:40:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141287 states, 1141283 states have (on average 3.0381333989904347) internal successors, (3467370), 1141286 states have internal predecessors, (3467370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)