/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:06:48,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:06:48,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:06:48,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:06:48,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:06:48,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:06:48,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:06:48,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:06:48,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:06:48,187 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:06:48,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:06:48,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:06:48,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:06:48,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:06:48,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:06:48,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:06:48,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:06:48,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:06:48,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:06:48,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:06:48,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:06:48,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:06:48,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:06:48,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:06:48,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:06:48,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:06:48,195 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:06:48,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:06:48,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:06:48,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:06:48,405 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:06:48,405 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:06:48,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_2.c [2023-12-20 00:06:49,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:06:49,689 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:06:49,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_2.c [2023-12-20 00:06:49,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b80786a8/4f9238a661be4ba89d8668d017b645c7/FLAG9bbae892e [2023-12-20 00:06:49,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b80786a8/4f9238a661be4ba89d8668d017b645c7 [2023-12-20 00:06:49,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:06:49,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:06:49,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:06:49,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:06:49,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:06:49,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b94d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49, skipping insertion in model container [2023-12-20 00:06:49,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:06:49,909 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2023-12-20 00:06:49,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:06:49,919 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:06:49,932 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2023-12-20 00:06:49,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:06:49,942 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:06:49,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49 WrapperNode [2023-12-20 00:06:49,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:06:49,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:06:49,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:06:49,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:06:49,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,981 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-12-20 00:06:49,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:06:49,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:06:49,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:06:49,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:06:49,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:49,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,012 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2023-12-20 00:06:50,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:06:50,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:06:50,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:06:50,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:06:50,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (1/1) ... [2023-12-20 00:06:50,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:06:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:50,052 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) [2023-12-20 00:06:50,084 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 [2023-12-20 00:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 00:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 00:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 00:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 00:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 00:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 00:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2023-12-20 00:06:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2023-12-20 00:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:06:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 00:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 00:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 00:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2023-12-20 00:06:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2023-12-20 00:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 00:06:50,154 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:06:50,156 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:06:50,273 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:06:50,290 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:06:50,290 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 00:06:50,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:06:50 BoogieIcfgContainer [2023-12-20 00:06:50,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:06:50,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:06:50,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:06:50,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:06:50,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:06:49" (1/3) ... [2023-12-20 00:06:50,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f24de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:06:50, skipping insertion in model container [2023-12-20 00:06:50,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:06:49" (2/3) ... [2023-12-20 00:06:50,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f24de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:06:50, skipping insertion in model container [2023-12-20 00:06:50,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:06:50" (3/3) ... [2023-12-20 00:06:50,297 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2023-12-20 00:06:50,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:06:50,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:06:50,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:06:50,346 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@98a51ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:06:50,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:06:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-20 00:06:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 00:06:50,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:50,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:50,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:50,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 855928239, now seen corresponding path program 1 times [2023-12-20 00:06:50,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912464512] [2023-12-20 00:06:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:50,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:06:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912464512] [2023-12-20 00:06:50,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912464512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:06:50,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:06:50,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:06:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653779220] [2023-12-20 00:06:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:06:50,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:06:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:06:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:06:50,844 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:06:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:50,955 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2023-12-20 00:06:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:06:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-20 00:06:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:50,961 INFO L225 Difference]: With dead ends: 32 [2023-12-20 00:06:50,961 INFO L226 Difference]: Without dead ends: 23 [2023-12-20 00:06:50,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:06:50,965 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:50,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-20 00:06:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-12-20 00:06:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-20 00:06:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-20 00:06:50,990 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2023-12-20 00:06:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:50,990 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-20 00:06:50,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:06:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-20 00:06:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 00:06:50,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:50,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:50,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:06:50,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:50,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 255373073, now seen corresponding path program 1 times [2023-12-20 00:06:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806540905] [2023-12-20 00:06:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:50,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-20 00:06:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 00:06:51,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:51,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806540905] [2023-12-20 00:06:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806540905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:06:51,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:06:51,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:06:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059507009] [2023-12-20 00:06:51,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:06:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:06:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:06:51,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:06:51,169 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:06:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:51,261 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-12-20 00:06:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:06:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-12-20 00:06:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:51,263 INFO L225 Difference]: With dead ends: 42 [2023-12-20 00:06:51,263 INFO L226 Difference]: Without dead ends: 23 [2023-12-20 00:06:51,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 00:06:51,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:51,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-20 00:06:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-20 00:06:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-20 00:06:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-20 00:06:51,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 21 [2023-12-20 00:06:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:51,272 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-20 00:06:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:06:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-20 00:06:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 00:06:51,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:51,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:51,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:06:51,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:51,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1037516303, now seen corresponding path program 1 times [2023-12-20 00:06:51,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:51,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371297626] [2023-12-20 00:06:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 00:06:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 00:06:51,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371297626] [2023-12-20 00:06:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371297626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80669136] [2023-12-20 00:06:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:51,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:51,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:51,742 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) [2023-12-20 00:06:51,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:06:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:51,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 00:06:51,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:06:51,882 INFO L378 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 [2023-12-20 00:06:52,003 INFO L378 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 36 treesize of output 13 [2023-12-20 00:06:52,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 00:06:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 00:06:52,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:06:52,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-20 00:06:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80669136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:52,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:06:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-12-20 00:06:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895380977] [2023-12-20 00:06:52,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:06:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 00:06:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 00:06:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:06:52,328 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-20 00:06:52,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:52,572 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2023-12-20 00:06:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 00:06:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 26 [2023-12-20 00:06:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:52,573 INFO L225 Difference]: With dead ends: 54 [2023-12-20 00:06:52,573 INFO L226 Difference]: Without dead ends: 33 [2023-12-20 00:06:52,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-12-20 00:06:52,574 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:52,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 43 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-20 00:06:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-12-20 00:06:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-20 00:06:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-20 00:06:52,579 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 26 [2023-12-20 00:06:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:52,579 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-20 00:06:52,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-20 00:06:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-20 00:06:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 00:06:52,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:52,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:52,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 00:06:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:52,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:52,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:52,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1404341341, now seen corresponding path program 1 times [2023-12-20 00:06:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:52,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163478746] [2023-12-20 00:06:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 00:06:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 00:06:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163478746] [2023-12-20 00:06:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163478746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861472849] [2023-12-20 00:06:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:53,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:53,284 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) [2023-12-20 00:06:53,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:06:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:53,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 00:06:53,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:06:53,401 INFO L378 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 [2023-12-20 00:06:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:06:53,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:06:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 00:06:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861472849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:06:53,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:06:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 26 [2023-12-20 00:06:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849494604] [2023-12-20 00:06:53,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:06:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 00:06:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 00:06:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2023-12-20 00:06:53,822 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 26 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-20 00:06:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:54,080 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2023-12-20 00:06:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 00:06:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 10 states have call successors, (12) Word has length 31 [2023-12-20 00:06:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:54,081 INFO L225 Difference]: With dead ends: 56 [2023-12-20 00:06:54,081 INFO L226 Difference]: Without dead ends: 29 [2023-12-20 00:06:54,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 00:06:54,083 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:54,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-20 00:06:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-20 00:06:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-20 00:06:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-20 00:06:54,087 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 31 [2023-12-20 00:06:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:54,087 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-20 00:06:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 10 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-20 00:06:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-20 00:06:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 00:06:54,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:54,088 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:54,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 00:06:54,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-20 00:06:54,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1464884653, now seen corresponding path program 2 times [2023-12-20 00:06:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612343985] [2023-12-20 00:06:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 00:06:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 00:06:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 00:06:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612343985] [2023-12-20 00:06:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612343985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962405239] [2023-12-20 00:06:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 00:06:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:55,001 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) [2023-12-20 00:06:55,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:06:55,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 00:06:55,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:06:55,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-20 00:06:55,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:06:55,129 INFO L378 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 [2023-12-20 00:06:55,277 INFO L378 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 36 treesize of output 13 [2023-12-20 00:06:55,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 00:06:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-20 00:06:55,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:06:55,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962405239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:55,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:06:55,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2023-12-20 00:06:55,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990096055] [2023-12-20 00:06:55,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:06:55,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 00:06:55,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 00:06:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-12-20 00:06:55,523 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 20 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 8 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-20 00:06:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:55,709 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2023-12-20 00:06:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 00:06:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 8 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) Word has length 62 [2023-12-20 00:06:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:55,711 INFO L225 Difference]: With dead ends: 66 [2023-12-20 00:06:55,711 INFO L226 Difference]: Without dead ends: 39 [2023-12-20 00:06:55,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 00:06:55,712 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:55,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-20 00:06:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2023-12-20 00:06:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-20 00:06:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-12-20 00:06:55,719 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 62 [2023-12-20 00:06:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:55,720 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-12-20 00:06:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 8 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-20 00:06:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-12-20 00:06:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 00:06:55,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:55,721 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:55,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 00:06:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:55,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:55,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1958163257, now seen corresponding path program 2 times [2023-12-20 00:06:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744867297] [2023-12-20 00:06:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:55,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 00:06:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-20 00:06:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 10 proven. 118 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 00:06:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:56,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744867297] [2023-12-20 00:06:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744867297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:56,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600498743] [2023-12-20 00:06:56,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 00:06:56,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:56,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:56,877 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) [2023-12-20 00:06:56,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 00:06:56,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 00:06:56,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:06:56,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 00:06:56,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:06:56,975 INFO L378 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 [2023-12-20 00:06:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-20 00:06:57,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:06:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-20 00:06:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600498743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:06:57,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:06:57,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 14] total 35 [2023-12-20 00:06:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548752559] [2023-12-20 00:06:57,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:06:57,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 00:06:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:06:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 00:06:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 00:06:57,883 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 35 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 29 states have internal predecessors, (50), 13 states have call successors, (17), 7 states have call predecessors, (17), 13 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-20 00:06:58,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:06:58,202 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2023-12-20 00:06:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 00:06:58,202 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 29 states have internal predecessors, (50), 13 states have call successors, (17), 7 states have call predecessors, (17), 13 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) Word has length 72 [2023-12-20 00:06:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:06:58,203 INFO L225 Difference]: With dead ends: 68 [2023-12-20 00:06:58,203 INFO L226 Difference]: Without dead ends: 35 [2023-12-20 00:06:58,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=1759, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 00:06:58,205 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:06:58,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 111 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:06:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-20 00:06:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-20 00:06:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-20 00:06:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-12-20 00:06:58,208 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 72 [2023-12-20 00:06:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:06:58,209 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-12-20 00:06:58,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 29 states have internal predecessors, (50), 13 states have call successors, (17), 7 states have call predecessors, (17), 13 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-20 00:06:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-12-20 00:06:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 00:06:58,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:06:58,210 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:06:58,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 00:06:58,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:58,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:06:58,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:06:58,415 INFO L85 PathProgramCache]: Analyzing trace with hash 620375637, now seen corresponding path program 3 times [2023-12-20 00:06:58,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:06:58,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947298530] [2023-12-20 00:06:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:06:58,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:06:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:06:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:06:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:06:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:06:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:06:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:06:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 307 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-20 00:06:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:06:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947298530] [2023-12-20 00:06:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947298530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:06:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857143558] [2023-12-20 00:06:59,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 00:06:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:06:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:06:59,931 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) [2023-12-20 00:06:59,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 00:07:00,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-20 00:07:00,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:07:00,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-20 00:07:00,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:07:00,061 INFO L378 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 [2023-12-20 00:07:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2023-12-20 00:07:00,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:07:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2023-12-20 00:07:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857143558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:07:01,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:07:01,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 18] total 41 [2023-12-20 00:07:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120683569] [2023-12-20 00:07:01,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:07:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 00:07:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:07:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 00:07:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 00:07:01,594 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (20), 8 states have call predecessors, (20), 16 states have return successors, (24), 18 states have call predecessors, (24), 16 states have call successors, (24) [2023-12-20 00:07:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:07:01,941 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2023-12-20 00:07:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 00:07:01,941 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (20), 8 states have call predecessors, (20), 16 states have return successors, (24), 18 states have call predecessors, (24), 16 states have call successors, (24) Word has length 118 [2023-12-20 00:07:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:07:01,942 INFO L225 Difference]: With dead ends: 72 [2023-12-20 00:07:01,942 INFO L226 Difference]: Without dead ends: 39 [2023-12-20 00:07:01,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=425, Invalid=2331, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 00:07:01,943 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:07:01,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 131 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:07:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-20 00:07:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-20 00:07:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-20 00:07:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-12-20 00:07:01,947 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 118 [2023-12-20 00:07:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:07:01,948 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-12-20 00:07:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 1.78125) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (20), 8 states have call predecessors, (20), 16 states have return successors, (24), 18 states have call predecessors, (24), 16 states have call successors, (24) [2023-12-20 00:07:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-12-20 00:07:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 00:07:01,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:07:01,949 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:07:01,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 00:07:02,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:02,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:07:02,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:07:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1739371329, now seen corresponding path program 4 times [2023-12-20 00:07:02,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:07:02,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791380546] [2023-12-20 00:07:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:07:02,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:07:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:07:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2023-12-20 00:07:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:07:04,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791380546] [2023-12-20 00:07:04,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791380546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:07:04,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139052221] [2023-12-20 00:07:04,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 00:07:04,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:04,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:07:04,160 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) [2023-12-20 00:07:04,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 00:07:04,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 00:07:04,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:07:04,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-20 00:07:04,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:07:04,389 INFO L378 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 11 treesize of output 7 [2023-12-20 00:07:04,577 INFO L378 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 19 treesize of output 11 [2023-12-20 00:07:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 703 proven. 71 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-12-20 00:07:04,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:07:05,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-12-20 00:07:05,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-12-20 00:07:05,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-12-20 00:07:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139052221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:07:06,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:07:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2023-12-20 00:07:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060508804] [2023-12-20 00:07:06,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:07:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 00:07:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:07:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 00:07:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 00:07:06,522 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 32 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 30 states have internal predecessors, (49), 12 states have call successors, (15), 3 states have call predecessors, (15), 14 states have return successors, (19), 17 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-20 00:07:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:07:07,323 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2023-12-20 00:07:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 00:07:07,324 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 30 states have internal predecessors, (49), 12 states have call successors, (15), 3 states have call predecessors, (15), 14 states have return successors, (19), 17 states have call predecessors, (19), 12 states have call successors, (19) Word has length 174 [2023-12-20 00:07:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:07:07,325 INFO L225 Difference]: With dead ends: 79 [2023-12-20 00:07:07,325 INFO L226 Difference]: Without dead ends: 75 [2023-12-20 00:07:07,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=3794, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 00:07:07,327 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:07:07,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 58 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 00:07:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-20 00:07:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2023-12-20 00:07:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 19 states have return successors, (33), 20 states have call predecessors, (33), 5 states have call successors, (33) [2023-12-20 00:07:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2023-12-20 00:07:07,339 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 174 [2023-12-20 00:07:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:07:07,339 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2023-12-20 00:07:07,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 30 states have internal predecessors, (49), 12 states have call successors, (15), 3 states have call predecessors, (15), 14 states have return successors, (19), 17 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-20 00:07:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2023-12-20 00:07:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 00:07:07,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:07:07,341 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:07:07,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 00:07:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:07,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:07:07,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:07:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1739369407, now seen corresponding path program 3 times [2023-12-20 00:07:07,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:07:07,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255723042] [2023-12-20 00:07:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:07:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:07:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:07:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2023-12-20 00:07:09,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:07:09,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255723042] [2023-12-20 00:07:09,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255723042] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:07:09,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112353848] [2023-12-20 00:07:09,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 00:07:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:07:09,454 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) [2023-12-20 00:07:09,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 00:07:10,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-12-20 00:07:10,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:07:10,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-20 00:07:10,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:07:10,552 INFO L378 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 36 treesize of output 13 [2023-12-20 00:07:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 706 proven. 171 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 00:07:10,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:07:11,465 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-20 00:07:11,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-12-20 00:07:11,665 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-20 00:07:11,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-12-20 00:07:11,791 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-20 00:07:11,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-12-20 00:07:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112353848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:07:33,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:07:33,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-12-20 00:07:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914374332] [2023-12-20 00:07:33,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 00:07:33,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 00:07:33,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:07:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 00:07:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1189, Unknown=6, NotChecked=0, Total=1332 [2023-12-20 00:07:33,352 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 31 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 27 states have internal predecessors, (45), 13 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (18), 14 states have call predecessors, (18), 13 states have call successors, (18) [2023-12-20 00:07:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:07:33,887 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2023-12-20 00:07:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 00:07:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 27 states have internal predecessors, (45), 13 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (18), 14 states have call predecessors, (18), 13 states have call successors, (18) Word has length 174 [2023-12-20 00:07:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:07:33,889 INFO L225 Difference]: With dead ends: 70 [2023-12-20 00:07:33,889 INFO L226 Difference]: Without dead ends: 49 [2023-12-20 00:07:33,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=344, Invalid=2512, Unknown=6, NotChecked=0, Total=2862 [2023-12-20 00:07:33,891 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:07:33,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 80 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:07:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-20 00:07:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-12-20 00:07:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 14 states have return successors, (22), 15 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-20 00:07:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2023-12-20 00:07:33,896 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 174 [2023-12-20 00:07:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:07:33,896 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2023-12-20 00:07:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 27 states have internal predecessors, (45), 13 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (18), 14 states have call predecessors, (18), 13 states have call successors, (18) [2023-12-20 00:07:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-12-20 00:07:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-20 00:07:33,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:07:33,898 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 31, 31, 31, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:07:33,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 00:07:34,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:34,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:07:34,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:07:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash -357746639, now seen corresponding path program 5 times [2023-12-20 00:07:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:07:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931630732] [2023-12-20 00:07:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:07:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:07:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:07:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:07:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 00:07:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 00:07:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:07:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3075 backedges. 834 proven. 13 refuted. 0 times theorem prover too weak. 2228 trivial. 0 not checked. [2023-12-20 00:07:37,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:07:37,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931630732] [2023-12-20 00:07:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931630732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:07:37,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570139929] [2023-12-20 00:07:37,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 00:07:37,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:07:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:07:37,980 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) [2023-12-20 00:07:37,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 00:07:40,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-12-20 00:07:40,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 00:07:40,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-20 00:07:40,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:07:40,640 INFO L378 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 [2023-12-20 00:07:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3075 backedges. 1062 proven. 394 refuted. 0 times theorem prover too weak. 1619 trivial. 0 not checked. [2023-12-20 00:07:40,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:07:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3075 backedges. 1030 proven. 77 refuted. 0 times theorem prover too weak. 1968 trivial. 0 not checked. [2023-12-20 00:07:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570139929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:07:44,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:07:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 30] total 43 [2023-12-20 00:07:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226321484] [2023-12-20 00:07:44,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:07:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 00:07:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:07:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 00:07:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 00:07:44,277 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 43 states, 32 states have (on average 1.875) internal successors, (60), 34 states have internal predecessors, (60), 18 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-20 00:07:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:07:44,594 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2023-12-20 00:07:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:07:44,595 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 32 states have (on average 1.875) internal successors, (60), 34 states have internal predecessors, (60), 18 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) Word has length 220 [2023-12-20 00:07:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:07:44,596 INFO L225 Difference]: With dead ends: 71 [2023-12-20 00:07:44,596 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 00:07:44,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 495 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=590, Invalid=2272, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 00:07:44,597 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:07:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 96 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:07:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 00:07:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 00:07:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:07:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 00:07:44,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2023-12-20 00:07:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:07:44,598 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 00:07:44,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 32 states have (on average 1.875) internal successors, (60), 34 states have internal predecessors, (60), 18 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (34), 11 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-20 00:07:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 00:07:44,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 00:07:44,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 00:07:44,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 00:07:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 00:07:44,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-20 00:07:45,030 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (or (not (= (select (select |old(#memory_int#2)| |func_to_recursive_line_20_to_21_0_#in~b.base|) |func_to_recursive_line_20_to_21_0_#in~b.offset|) 6)) (and (= func_to_recursive_line_20_to_21_0_~a.base |func_to_recursive_line_20_to_21_0_#in~a.base|) (or (< (select (select |old(#memory_int#2)| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 0) (< 0 (+ (select (select |#memory_int#2| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 1))) (<= (select (select |#memory_int#1| func_to_recursive_line_20_to_21_0_~a.base) func_to_recursive_line_20_to_21_0_~a.offset) 5) (= |func_to_recursive_line_20_to_21_0_#in~a.offset| func_to_recursive_line_20_to_21_0_~a.offset) (= (select (select |#memory_int#2| func_to_recursive_line_20_to_21_0_~b.base) func_to_recursive_line_20_to_21_0_~b.offset) 0) (= |#memory_int#1| |old(#memory_int#1)|) (= |func_to_recursive_line_20_to_21_0_#in~b.offset| func_to_recursive_line_20_to_21_0_~b.offset) (= func_to_recursive_line_20_to_21_0_~b.base |func_to_recursive_line_20_to_21_0_#in~b.base|))) [2023-12-20 00:07:45,030 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2023-12-20 00:07:45,030 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 39 57) the Hoare annotation is: (or (not (= (select (select |old(#memory_int#2)| |func_to_recursive_line_20_to_21_0_#in~b.base|) |func_to_recursive_line_20_to_21_0_#in~b.offset|) 6)) (and (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#1| |old(#memory_int#1)|))) [2023-12-20 00:07:45,030 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 56) no Hoare annotation was computed. [2023-12-20 00:07:45,030 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 39 57) no Hoare annotation was computed. [2023-12-20 00:07:45,030 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (or (not (= (select (select |old(#memory_int#2)| |func_to_recursive_line_20_to_21_0_#in~b.base|) |func_to_recursive_line_20_to_21_0_#in~b.offset|) 6)) (let ((.cse0 (select (select |#memory_int#1| func_to_recursive_line_20_to_21_0_~a.base) func_to_recursive_line_20_to_21_0_~a.offset))) (and (= func_to_recursive_line_20_to_21_0_~a.base |func_to_recursive_line_20_to_21_0_#in~a.base|) (= |func_to_recursive_line_20_to_21_0_#in~a.offset| func_to_recursive_line_20_to_21_0_~a.offset) (= |#memory_int#1| (store |old(#memory_int#1)| func_to_recursive_line_20_to_21_0_~a.base (store (select |old(#memory_int#1)| func_to_recursive_line_20_to_21_0_~a.base) func_to_recursive_line_20_to_21_0_~a.offset .cse0))) (= |func_to_recursive_line_20_to_21_0_#in~b.offset| func_to_recursive_line_20_to_21_0_~b.offset) (<= .cse0 6) (<= (select (select |#memory_int#1| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|) (+ (select (select |old(#memory_int#1)| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|) 1)) (= (select (select |#memory_int#2| |func_to_recursive_line_20_to_21_0_#in~b.base|) |func_to_recursive_line_20_to_21_0_#in~b.offset|) 6) (= func_to_recursive_line_20_to_21_0_~b.base |func_to_recursive_line_20_to_21_0_#in~b.base|)))) [2023-12-20 00:07:45,030 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_20_to_21_0EXIT(lines 39 57) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L895 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: (and (= (select (select |#memory_int#1| |ULTIMATE.start_main_~#a~0#1.base|) 0) 0) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= (select (select |#memory_int#2| |ULTIMATE.start_main_~#b~0#1.base|) 0) 6)) [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L67-2(lines 67 73) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L65-1(line 65) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L67-4(lines 67 73) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 69) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (or (let ((.cse0 (select |old(#memory_int#2)| func_to_recursive_line_21_to_21_0_~b.base))) (let ((.cse1 (select .cse0 func_to_recursive_line_21_to_21_0_~b.offset))) (and (= |func_to_recursive_line_21_to_21_0_#in~b.offset| func_to_recursive_line_21_to_21_0_~b.offset) (= func_to_recursive_line_21_to_21_0_~b.base |func_to_recursive_line_21_to_21_0_#in~b.base|) (= |#memory_int#2| (store |old(#memory_int#2)| func_to_recursive_line_21_to_21_0_~b.base (store .cse0 func_to_recursive_line_21_to_21_0_~b.offset (+ .cse1 1)))) (<= .cse1 5)))) (forall ((|v_func_to_recursive_line_20_to_21_0_#in~a.offset_BEFORE_CALL_38| Int) (|v_func_to_recursive_line_20_to_21_0_#in~a.base_BEFORE_CALL_38| Int)) (< 5 (select (select |#memory_int#1| |v_func_to_recursive_line_20_to_21_0_#in~a.base_BEFORE_CALL_38|) |v_func_to_recursive_line_20_to_21_0_#in~a.offset_BEFORE_CALL_38|)))) [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_21_to_21_0EXIT(lines 23 37) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 37) the Hoare annotation is: (or (forall ((|v_func_to_recursive_line_20_to_21_0_#in~a.offset_BEFORE_CALL_38| Int) (|v_func_to_recursive_line_20_to_21_0_#in~a.base_BEFORE_CALL_38| Int)) (< 5 (select (select |#memory_int#1| |v_func_to_recursive_line_20_to_21_0_#in~a.base_BEFORE_CALL_38|) |v_func_to_recursive_line_20_to_21_0_#in~a.offset_BEFORE_CALL_38|))) (= |#memory_int#2| |old(#memory_int#2)|)) [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 36) no Hoare annotation was computed. [2023-12-20 00:07:45,031 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 23 37) no Hoare annotation was computed. [2023-12-20 00:07:45,033 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1] [2023-12-20 00:07:45,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 00:07:45,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:07:45 BoogieIcfgContainer [2023-12-20 00:07:45,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 00:07:45,037 INFO L158 Benchmark]: Toolchain (without parser) took 55322.37ms. Allocated memory was 231.7MB in the beginning and 714.1MB in the end (delta: 482.3MB). Free memory was 180.7MB in the beginning and 662.8MB in the end (delta: -482.1MB). Peak memory consumption was 413.4MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,037 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 00:07:45,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.32ms. Allocated memory is still 231.7MB. Free memory was 180.4MB in the beginning and 169.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.43ms. Allocated memory is still 231.7MB. Free memory was 169.9MB in the beginning and 168.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,038 INFO L158 Benchmark]: Boogie Preprocessor took 48.26ms. Allocated memory is still 231.7MB. Free memory was 168.3MB in the beginning and 166.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,038 INFO L158 Benchmark]: RCFGBuilder took 259.81ms. Allocated memory is still 231.7MB. Free memory was 166.5MB in the beginning and 154.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,038 INFO L158 Benchmark]: TraceAbstraction took 54745.09ms. Allocated memory was 231.7MB in the beginning and 714.1MB in the end (delta: 482.3MB). Free memory was 153.6MB in the beginning and 662.8MB in the end (delta: -509.2MB). Peak memory consumption was 386.1MB. Max. memory is 8.0GB. [2023-12-20 00:07:45,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.32ms. Allocated memory is still 231.7MB. Free memory was 180.4MB in the beginning and 169.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.43ms. Allocated memory is still 231.7MB. Free memory was 169.9MB in the beginning and 168.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.26ms. Allocated memory is still 231.7MB. Free memory was 168.3MB in the beginning and 166.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 259.81ms. Allocated memory is still 231.7MB. Free memory was 166.5MB in the beginning and 154.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 54745.09ms. Allocated memory was 231.7MB in the beginning and 714.1MB in the end (delta: 482.3MB). Free memory was 153.6MB in the beginning and 662.8MB in the end (delta: -509.2MB). Peak memory consumption was 386.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.7s, OverallIterations: 10, TraceHistogramMax: 36, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 785 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 687 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2392 IncrementalHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 98 mSDtfsCounter, 2392 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1938 GetRequests, 1563 SyntacticMatches, 9 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4266 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=8, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 63 PreInvPairs, 65 NumberOfFragments, 209 HoareAnnotationTreeSize, 63 FormulaSimplifications, 116 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FormulaSimplificationsInter, 142 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 1785 NumberOfCodeBlocks, 1693 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 2204 ConstructedInterpolants, 34 QuantifiedInterpolants, 8441 SizeOfPredicates, 118 NumberOfNonLiveVariables, 3413 ConjunctsInSsa, 568 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 18497/19883 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-20 00:07:45,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...