/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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:07:41,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:07:41,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:07:41,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:07:41,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:07:41,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:07:41,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:07:41,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:07:41,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:07:41,126 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:07:41,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:07:41,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:07:41,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:07:41,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:07:41,128 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:07:41,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:07:41,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:07:41,129 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:07:41,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:07:41,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:07:41,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:07:41,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:07:41,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:07:41,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:07:41,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:07:41,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:07:41,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:07:41,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:07:41,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:07:41,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:07:41,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:07:41,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:07:41,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:07:41,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:07:41,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:07:41,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:07:41,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:07:41,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:07:41,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:07:41,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:07:41,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:07:41,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:07:41,357 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:07:41,357 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:07:41,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/prefixsum_iter.c [2023-12-15 22:07:42,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:07:42,686 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:07:42,688 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c [2023-12-15 22:07:42,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed2c6bcb/0799b946bed148d78d336bde162c9d63/FLAG3fee8b135 [2023-12-15 22:07:42,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed2c6bcb/0799b946bed148d78d336bde162c9d63 [2023-12-15 22:07:42,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:07:42,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:07:42,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:07:42,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:07:42,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:07:42,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:42,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa5bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42, skipping insertion in model container [2023-12-15 22:07:42,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:42,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:07:42,875 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2023-12-15 22:07:42,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:07:42,907 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:07:42,916 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/prefixsum_iter.c[526,539] [2023-12-15 22:07:42,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:07:42,946 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:07:42,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42 WrapperNode [2023-12-15 22:07:42,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:07:42,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:07:42,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:07:42,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:07:42,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:42,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:42,990 INFO L138 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 128 [2023-12-15 22:07:42,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:07:42,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:07:42,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:07:42,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:07:43,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,015 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2023-12-15 22:07:43,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:07:43,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:07:43,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:07:43,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:07:43,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (1/1) ... [2023-12-15 22:07:43,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:07:43,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:43,093 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) [2023-12-15 22:07:43,100 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 [2023-12-15 22:07:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:07:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 22:07:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:07:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:07:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 22:07:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 22:07:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-15 22:07:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-15 22:07:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 22:07:43,189 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:07:43,190 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:07:43,382 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:07:43,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:07:43,425 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-15 22:07:43,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:07:43 BoogieIcfgContainer [2023-12-15 22:07:43,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:07:43,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:07:43,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:07:43,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:07:43,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:07:42" (1/3) ... [2023-12-15 22:07:43,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:07:43, skipping insertion in model container [2023-12-15 22:07:43,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:07:42" (2/3) ... [2023-12-15 22:07:43,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:07:43, skipping insertion in model container [2023-12-15 22:07:43,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:07:43" (3/3) ... [2023-12-15 22:07:43,440 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2023-12-15 22:07:43,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:07:43,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:07:43,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:07:43,506 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;@6f89f7ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:07:43,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:07:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2023-12-15 22:07:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 22:07:43,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:43,522 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, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:43,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:43,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 347330670, now seen corresponding path program 1 times [2023-12-15 22:07:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222692625] [2023-12-15 22:07:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222692625] [2023-12-15 22:07:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222692625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:07:43,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:07:43,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 22:07:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193806041] [2023-12-15 22:07:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:07:43,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 22:07:43,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:43,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 22:07:43,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 22:07:43,815 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 22:07:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:43,907 INFO L93 Difference]: Finished difference Result 66 states and 101 transitions. [2023-12-15 22:07:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 22:07:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-12-15 22:07:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:43,915 INFO L225 Difference]: With dead ends: 66 [2023-12-15 22:07:43,915 INFO L226 Difference]: Without dead ends: 32 [2023-12-15 22:07:43,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 22:07:43,922 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-15 22:07:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-15 22:07:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2023-12-15 22:07:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-15 22:07:43,961 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 32 [2023-12-15 22:07:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:43,962 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-15 22:07:43,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 22:07:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-15 22:07:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 22:07:43,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:43,964 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, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:43,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 22:07:43,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:43,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:43,966 INFO L85 PathProgramCache]: Analyzing trace with hash 116060780, now seen corresponding path program 1 times [2023-12-15 22:07:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302762896] [2023-12-15 22:07:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:44,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302762896] [2023-12-15 22:07:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302762896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:07:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:07:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:07:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998621484] [2023-12-15 22:07:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:07:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:07:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:07:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:07:44,432 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:44,566 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-12-15 22:07:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:07:44,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-12-15 22:07:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:44,568 INFO L225 Difference]: With dead ends: 50 [2023-12-15 22:07:44,568 INFO L226 Difference]: Without dead ends: 35 [2023-12-15 22:07:44,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:07:44,571 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:44,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 132 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-15 22:07:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-12-15 22:07:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2023-12-15 22:07:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-15 22:07:44,582 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 32 [2023-12-15 22:07:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:44,584 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-15 22:07:44,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-15 22:07:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 22:07:44,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:44,587 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 22:07:44,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:44,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash 155328277, now seen corresponding path program 1 times [2023-12-15 22:07:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282260919] [2023-12-15 22:07:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:45,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282260919] [2023-12-15 22:07:45,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282260919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:45,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101858032] [2023-12-15 22:07:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:45,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:45,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:45,180 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) [2023-12-15 22:07:45,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:07:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:45,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-15 22:07:45,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:45,485 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 [2023-12-15 22:07:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 22:07:45,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:45,593 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 13 [2023-12-15 22:07:45,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-12-15 22:07:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101858032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:45,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:45,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 22 [2023-12-15 22:07:45,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036661347] [2023-12-15 22:07:45,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:45,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 22:07:45,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 22:07:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-12-15 22:07:45,672 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:07:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:46,072 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2023-12-15 22:07:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-15 22:07:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 33 [2023-12-15 22:07:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:46,076 INFO L225 Difference]: With dead ends: 64 [2023-12-15 22:07:46,076 INFO L226 Difference]: Without dead ends: 62 [2023-12-15 22:07:46,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 22:07:46,079 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 177 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:46,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 309 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:07:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-15 22:07:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2023-12-15 22:07:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 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) [2023-12-15 22:07:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2023-12-15 22:07:46,097 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2023-12-15 22:07:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:46,098 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2023-12-15 22:07:46,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:07:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-12-15 22:07:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 22:07:46,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:46,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:46,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 22:07:46,308 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 [2023-12-15 22:07:46,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:46,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1372620684, now seen corresponding path program 2 times [2023-12-15 22:07:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243563856] [2023-12-15 22:07:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:46,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243563856] [2023-12-15 22:07:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243563856] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534234667] [2023-12-15 22:07:46,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 22:07:46,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:46,522 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) [2023-12-15 22:07:46,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:07:46,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-15 22:07:46,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 22:07:46,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-15 22:07:46,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:46,648 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 16 treesize of output 12 [2023-12-15 22:07:46,775 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-12-15 22:07:46,777 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 45 treesize of output 23 [2023-12-15 22:07:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:07:46,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:07:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534234667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:07:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:07:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-15 22:07:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769317827] [2023-12-15 22:07:46,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:07:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:07:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:07:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:07:46,796 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:46,938 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2023-12-15 22:07:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 22:07:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-12-15 22:07:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:46,942 INFO L225 Difference]: With dead ends: 82 [2023-12-15 22:07:46,942 INFO L226 Difference]: Without dead ends: 80 [2023-12-15 22:07:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:07:46,943 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 145 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-15 22:07:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 46. [2023-12-15 22:07:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 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) [2023-12-15 22:07:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-12-15 22:07:46,955 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 34 [2023-12-15 22:07:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:46,956 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-12-15 22:07:46,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-12-15 22:07:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 22:07:46,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:46,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:46,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:47,162 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 [2023-12-15 22:07:47,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:47,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1709789265, now seen corresponding path program 1 times [2023-12-15 22:07:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767088019] [2023-12-15 22:07:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767088019] [2023-12-15 22:07:47,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767088019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255238446] [2023-12-15 22:07:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:47,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:47,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:47,338 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) [2023-12-15 22:07:47,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:07:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:47,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 22:07:47,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:47,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255238446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:47,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:47,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 13 [2023-12-15 22:07:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161616905] [2023-12-15 22:07:47,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:47,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 22:07:47,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 22:07:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:07:47,533 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:47,653 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2023-12-15 22:07:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:07:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2023-12-15 22:07:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:47,656 INFO L225 Difference]: With dead ends: 70 [2023-12-15 22:07:47,656 INFO L226 Difference]: Without dead ends: 60 [2023-12-15 22:07:47,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:07:47,657 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:47,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 197 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-15 22:07:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-12-15 22:07:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 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) [2023-12-15 22:07:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2023-12-15 22:07:47,673 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 36 [2023-12-15 22:07:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:47,674 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2023-12-15 22:07:47,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2023-12-15 22:07:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 22:07:47,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:47,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:47,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:47,884 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 [2023-12-15 22:07:47,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:47,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -635961222, now seen corresponding path program 2 times [2023-12-15 22:07:47,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:47,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413459076] [2023-12-15 22:07:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:47,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:07:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413459076] [2023-12-15 22:07:48,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413459076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207491449] [2023-12-15 22:07:48,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 22:07:48,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:48,037 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) [2023-12-15 22:07:48,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:07:48,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 22:07:48,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 22:07:48,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 22:07:48,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 22:07:48,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:07:48,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207491449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:07:48,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:07:48,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-15 22:07:48,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013478378] [2023-12-15 22:07:48,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:07:48,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 22:07:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:48,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 22:07:48,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:07:48,213 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:48,298 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2023-12-15 22:07:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 22:07:48,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-12-15 22:07:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:48,300 INFO L225 Difference]: With dead ends: 86 [2023-12-15 22:07:48,300 INFO L226 Difference]: Without dead ends: 76 [2023-12-15 22:07:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:07:48,301 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:48,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 133 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:07:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-15 22:07:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 49. [2023-12-15 22:07:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 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) [2023-12-15 22:07:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2023-12-15 22:07:48,319 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 37 [2023-12-15 22:07:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:48,320 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2023-12-15 22:07:48,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2023-12-15 22:07:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 22:07:48,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:48,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:48,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:48,533 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 [2023-12-15 22:07:48,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:48,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1832489573, now seen corresponding path program 1 times [2023-12-15 22:07:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964491017] [2023-12-15 22:07:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:07:48,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:48,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964491017] [2023-12-15 22:07:48,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964491017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:48,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943946434] [2023-12-15 22:07:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:48,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:48,679 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) [2023-12-15 22:07:48,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:07:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:48,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 22:07:48,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:48,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943946434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:48,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-12-15 22:07:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709774362] [2023-12-15 22:07:48,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 22:07:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 22:07:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:07:48,900 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:49,247 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2023-12-15 22:07:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 22:07:49,248 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-12-15 22:07:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:49,249 INFO L225 Difference]: With dead ends: 93 [2023-12-15 22:07:49,249 INFO L226 Difference]: Without dead ends: 67 [2023-12-15 22:07:49,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2023-12-15 22:07:49,250 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 102 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:49,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 230 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 22:07:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-15 22:07:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2023-12-15 22:07:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 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) [2023-12-15 22:07:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-15 22:07:49,262 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 37 [2023-12-15 22:07:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:49,262 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-15 22:07:49,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-15 22:07:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 22:07:49,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:49,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:49,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:49,467 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 [2023-12-15 22:07:49,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1163402438, now seen corresponding path program 1 times [2023-12-15 22:07:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185842854] [2023-12-15 22:07:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:49,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:49,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185842854] [2023-12-15 22:07:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185842854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:49,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518070689] [2023-12-15 22:07:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:49,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:49,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:49,621 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) [2023-12-15 22:07:49,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 22:07:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:49,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 22:07:49,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:49,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:07:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518070689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:49,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 11 [2023-12-15 22:07:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098695137] [2023-12-15 22:07:49,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 22:07:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 22:07:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:07:49,784 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:49,886 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2023-12-15 22:07:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:07:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-12-15 22:07:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:49,888 INFO L225 Difference]: With dead ends: 58 [2023-12-15 22:07:49,888 INFO L226 Difference]: Without dead ends: 40 [2023-12-15 22:07:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:07:49,890 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:49,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 184 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-15 22:07:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-12-15 22:07:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2023-12-15 22:07:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-12-15 22:07:49,898 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 37 [2023-12-15 22:07:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-12-15 22:07:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-12-15 22:07:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 22:07:49,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:49,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:49,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:50,106 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 [2023-12-15 22:07:50,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:50,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2140225731, now seen corresponding path program 1 times [2023-12-15 22:07:50,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:50,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787077442] [2023-12-15 22:07:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:50,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:07:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787077442] [2023-12-15 22:07:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787077442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095461252] [2023-12-15 22:07:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:50,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:50,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:50,290 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) [2023-12-15 22:07:50,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 22:07:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 22:07:50,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 22:07:50,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:07:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095461252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:07:50,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:07:50,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-12-15 22:07:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777598322] [2023-12-15 22:07:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:07:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:07:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:07:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:07:50,421 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:50,463 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-12-15 22:07:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:07:50,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-12-15 22:07:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:50,465 INFO L225 Difference]: With dead ends: 46 [2023-12-15 22:07:50,465 INFO L226 Difference]: Without dead ends: 40 [2023-12-15 22:07:50,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:07:50,467 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:50,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:07:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-15 22:07:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2023-12-15 22:07:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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) [2023-12-15 22:07:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-12-15 22:07:50,473 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 38 [2023-12-15 22:07:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:50,473 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-12-15 22:07:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-12-15 22:07:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 22:07:50,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:50,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:50,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:50,679 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 [2023-12-15 22:07:50,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:50,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash -216897549, now seen corresponding path program 1 times [2023-12-15 22:07:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122149214] [2023-12-15 22:07:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:07:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122149214] [2023-12-15 22:07:50,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122149214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152308186] [2023-12-15 22:07:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:50,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:50,877 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) [2023-12-15 22:07:50,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 22:07:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:50,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 22:07:50,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:07:51,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 22:07:51,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152308186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:51,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:51,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2023-12-15 22:07:51,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521445835] [2023-12-15 22:07:51,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:51,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 22:07:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 22:07:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-15 22:07:51,153 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:51,337 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-12-15 22:07:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:07:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2023-12-15 22:07:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:51,338 INFO L225 Difference]: With dead ends: 48 [2023-12-15 22:07:51,338 INFO L226 Difference]: Without dead ends: 42 [2023-12-15 22:07:51,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-12-15 22:07:51,339 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:51,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 196 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:07:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-15 22:07:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-15 22:07:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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) [2023-12-15 22:07:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-12-15 22:07:51,345 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 41 [2023-12-15 22:07:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:51,345 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-12-15 22:07:51,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-15 22:07:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-12-15 22:07:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 22:07:51,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:51,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:51,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:51,551 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 [2023-12-15 22:07:51,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 392718574, now seen corresponding path program 1 times [2023-12-15 22:07:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878087371] [2023-12-15 22:07:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 22:07:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878087371] [2023-12-15 22:07:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878087371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208659532] [2023-12-15 22:07:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:53,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:53,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:53,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:07:53,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 22:07:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:53,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-15 22:07:53,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:53,440 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 13 treesize of output 9 [2023-12-15 22:07:53,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 22:07:53,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 20 [2023-12-15 22:07:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 22:07:53,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:07:53,842 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 84 treesize of output 76 [2023-12-15 22:07:53,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 22:07:53,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 170 treesize of output 138 [2023-12-15 22:07:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 22:07:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208659532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:07:54,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:07:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 13] total 41 [2023-12-15 22:07:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587017327] [2023-12-15 22:07:54,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:07:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-15 22:07:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:07:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-15 22:07:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 22:07:54,106 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 41 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 39 states have internal predecessors, (70), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:07:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:07:56,034 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-12-15 22:07:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-15 22:07:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 39 states have internal predecessors, (70), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 42 [2023-12-15 22:07:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:07:56,035 INFO L225 Difference]: With dead ends: 86 [2023-12-15 22:07:56,035 INFO L226 Difference]: Without dead ends: 84 [2023-12-15 22:07:56,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=571, Invalid=3589, Unknown=0, NotChecked=0, Total=4160 [2023-12-15 22:07:56,037 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 344 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 22:07:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 339 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 22:07:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-15 22:07:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 41. [2023-12-15 22:07:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2023-12-15 22:07:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-15 22:07:56,046 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 42 [2023-12-15 22:07:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:07:56,046 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-15 22:07:56,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 39 states have internal predecessors, (70), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 22:07:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-15 22:07:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 22:07:56,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:07:56,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:07:56,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 22:07:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:56,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:07:56,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:07:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -7009320, now seen corresponding path program 1 times [2023-12-15 22:07:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:07:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979248305] [2023-12-15 22:07:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:07:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 22:07:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 22:07:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 22:07:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 22:07:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 22:07:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:07:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979248305] [2023-12-15 22:07:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979248305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:07:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512670362] [2023-12-15 22:07:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:07:56,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:07:56,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:07:56,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:07:56,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 22:07:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:07:56,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-15 22:07:56,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:07:56,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-15 22:07:56,638 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 7 treesize of output 6 [2023-12-15 22:07:56,697 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-12-15 22:07:56,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-12-15 22:07:56,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-12-15 22:07:56,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-12-15 22:07:56,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-12-15 22:07:56,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2023-12-15 22:07:56,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2023-12-15 22:07:56,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-12-15 22:07:57,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2023-12-15 22:07:57,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-12-15 22:07:57,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2023-12-15 22:07:57,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 79 [2023-12-15 22:07:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 22:07:57,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 22:08:51,378 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:08:51,378 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:08:52,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 22:08:52,579 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 22:08:52,589 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 137 [2023-12-15 22:08:52,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:08:52,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 22:08:52,590 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 46 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-15 22:08:52,593 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:08:52,594 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:08:52,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:08:52 BoogieIcfgContainer [2023-12-15 22:08:52,596 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:08:52,597 INFO L158 Benchmark]: Toolchain (without parser) took 69879.72ms. Allocated memory was 315.6MB in the beginning and 465.6MB in the end (delta: 149.9MB). Free memory was 267.1MB in the beginning and 275.8MB in the end (delta: -8.8MB). Peak memory consumption was 142.6MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,597 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:08:52,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.37ms. Allocated memory is still 315.6MB. Free memory was 267.1MB in the beginning and 255.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.14ms. Allocated memory is still 315.6MB. Free memory was 255.1MB in the beginning and 253.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,598 INFO L158 Benchmark]: Boogie Preprocessor took 67.82ms. Allocated memory is still 315.6MB. Free memory was 253.0MB in the beginning and 250.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,598 INFO L158 Benchmark]: RCFGBuilder took 365.89ms. Allocated memory is still 315.6MB. Free memory was 250.6MB in the beginning and 232.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,598 INFO L158 Benchmark]: TraceAbstraction took 69168.91ms. Allocated memory was 315.6MB in the beginning and 465.6MB in the end (delta: 149.9MB). Free memory was 232.0MB in the beginning and 275.8MB in the end (delta: -43.8MB). Peak memory consumption was 107.0MB. Max. memory is 8.0GB. [2023-12-15 22:08:52,599 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 188.7MB. Free memory is still 141.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 227.37ms. Allocated memory is still 315.6MB. Free memory was 267.1MB in the beginning and 255.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.14ms. Allocated memory is still 315.6MB. Free memory was 255.1MB in the beginning and 253.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.82ms. Allocated memory is still 315.6MB. Free memory was 253.0MB in the beginning and 250.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 365.89ms. Allocated memory is still 315.6MB. Free memory was 250.6MB in the beginning and 232.8MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 69168.91ms. Allocated memory was 315.6MB in the beginning and 465.6MB in the end (delta: 149.9MB). Free memory was 232.0MB in the beginning and 275.8MB in the end (delta: -43.8MB). Peak memory consumption was 107.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 46 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 825 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 823 mSDsluCounter, 2019 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1740 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2394 IncrementalHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 279 mSDtfsCounter, 2394 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 589 SyntacticMatches, 15 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, InterpolantAutomatonStates: 124, 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, 11 MinimizatonAttempts, 153 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 734 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 934 ConstructedInterpolants, 1 QuantifiedInterpolants, 4185 SizeOfPredicates, 114 NumberOfNonLiveVariables, 1908 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 199/254 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown