/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/hardness-nfm22/hardness_operatoramount_amount250_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:06:10,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:06:10,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 13:06:10,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:06:10,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:06:10,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:06:10,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:06:10,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:06:10,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:06:10,398 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:06:10,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:06:10,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:06:10,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:06:10,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:06:10,400 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:06:10,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:06:10,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:06:10,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:06:10,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:06:10,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:06:10,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:06:10,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:06:10,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:06:10,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:06:10,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:06:10,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:06:10,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:06:10,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:06:10,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:06:10,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:06:10,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:06:10,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:06:10,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:06:10,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:06:10,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:06:10,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:06:10,574 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:06:10,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-68.i [2023-12-19 13:06:11,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:06:11,711 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:06:11,712 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-68.i [2023-12-19 13:06:11,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839199d4c/a56fba03ee6d42189ea5d4b3ea264dc8/FLAG877688710 [2023-12-19 13:06:11,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839199d4c/a56fba03ee6d42189ea5d4b3ea264dc8 [2023-12-19 13:06:11,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:06:11,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:06:11,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:06:11,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:06:11,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:06:11,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:11" (1/1) ... [2023-12-19 13:06:11,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7c0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:11, skipping insertion in model container [2023-12-19 13:06:11,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:06:11" (1/1) ... [2023-12-19 13:06:11,778 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:06:11,871 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-68.i[916,929] [2023-12-19 13:06:11,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:06:11,997 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:06:12,004 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-68.i[916,929] [2023-12-19 13:06:12,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:06:12,068 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:06:12,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12 WrapperNode [2023-12-19 13:06:12,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:06:12,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:06:12,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:06:12,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:06:12,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,162 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 504 [2023-12-19 13:06:12,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:06:12,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:06:12,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:06:12,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:06:12,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,241 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 13:06:12,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:06:12,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:06:12,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:06:12,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:06:12,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (1/1) ... [2023-12-19 13:06:12,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:06:12,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:12,329 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) [2023-12-19 13:06:12,351 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 [2023-12-19 13:06:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:06:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:06:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:06:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:06:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:06:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:06:12,460 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:06:12,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:06:13,103 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:06:13,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:06:13,124 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:06:13,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:13 BoogieIcfgContainer [2023-12-19 13:06:13,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:06:13,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:06:13,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:06:13,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:06:13,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:06:11" (1/3) ... [2023-12-19 13:06:13,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603d3025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:13, skipping insertion in model container [2023-12-19 13:06:13,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:06:12" (2/3) ... [2023-12-19 13:06:13,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603d3025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:06:13, skipping insertion in model container [2023-12-19 13:06:13,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:06:13" (3/3) ... [2023-12-19 13:06:13,133 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-68.i [2023-12-19 13:06:13,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:06:13,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:06:13,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:06:13,196 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;@27388eb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:06:13,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:06:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 134 states have internal predecessors, (204), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 13:06:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:13,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:13,232 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:13,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:13,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1178971978, now seen corresponding path program 1 times [2023-12-19 13:06:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647745725] [2023-12-19 13:06:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647745725] [2023-12-19 13:06:13,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 13:06:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435502466] [2023-12-19 13:06:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:13,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:13,545 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) [2023-12-19 13:06:13,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 13:06:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:13,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:06:13,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2023-12-19 13:06:13,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:06:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435502466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:06:13,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:06:13,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:06:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687205317] [2023-12-19 13:06:13,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:13,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:06:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:06:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:06:13,852 INFO L87 Difference]: Start difference. First operand has 196 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 134 states have internal predecessors, (204), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 13:06:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:13,930 INFO L93 Difference]: Finished difference Result 388 states and 704 transitions. [2023-12-19 13:06:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:06:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 385 [2023-12-19 13:06:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:13,939 INFO L225 Difference]: With dead ends: 388 [2023-12-19 13:06:13,939 INFO L226 Difference]: Without dead ends: 193 [2023-12-19 13:06:13,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:06:13,945 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:13,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:06:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-19 13:06:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-12-19 13:06:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 131 states have (on average 1.4961832061068703) internal successors, (196), 131 states have internal predecessors, (196), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 13:06:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 316 transitions. [2023-12-19 13:06:14,007 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 316 transitions. Word has length 385 [2023-12-19 13:06:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:14,008 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 316 transitions. [2023-12-19 13:06:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 13:06:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 316 transitions. [2023-12-19 13:06:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:14,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:14,014 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:14,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 13:06:14,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:14,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 396336334, now seen corresponding path program 1 times [2023-12-19 13:06:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067118093] [2023-12-19 13:06:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:14,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364857807] [2023-12-19 13:06:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:14,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:14,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:14,300 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) [2023-12-19 13:06:14,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 13:06:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:14,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:06:14,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 13:06:14,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:06:14,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:14,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067118093] [2023-12-19 13:06:14,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:14,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364857807] [2023-12-19 13:06:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364857807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:06:14,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:06:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:06:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092467129] [2023-12-19 13:06:14,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:06:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:06:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:06:14,611 INFO L87 Difference]: Start difference. First operand 193 states and 316 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:14,726 INFO L93 Difference]: Finished difference Result 575 states and 942 transitions. [2023-12-19 13:06:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:06:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 385 [2023-12-19 13:06:14,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:14,731 INFO L225 Difference]: With dead ends: 575 [2023-12-19 13:06:14,732 INFO L226 Difference]: Without dead ends: 383 [2023-12-19 13:06:14,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:06:14,734 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 279 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:14,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 821 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:06:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-19 13:06:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2023-12-19 13:06:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 255 states have (on average 1.4627450980392156) internal successors, (373), 255 states have internal predecessors, (373), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-19 13:06:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 613 transitions. [2023-12-19 13:06:14,773 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 613 transitions. Word has length 385 [2023-12-19 13:06:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:14,775 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 613 transitions. [2023-12-19 13:06:14,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 613 transitions. [2023-12-19 13:06:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:14,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:14,783 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:14,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:14,989 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,SelfDestructingSolverStorable1 [2023-12-19 13:06:14,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:14,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash -691977522, now seen corresponding path program 1 times [2023-12-19 13:06:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689071716] [2023-12-19 13:06:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:15,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870064480] [2023-12-19 13:06:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:15,063 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) [2023-12-19 13:06:15,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 13:06:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:15,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 13:06:15,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3593 proven. 234 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2023-12-19 13:06:15,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 114 proven. 237 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-12-19 13:06:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689071716] [2023-12-19 13:06:16,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870064480] [2023-12-19 13:06:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870064480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:16,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:16,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 13:06:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108437824] [2023-12-19 13:06:16,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:16,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 13:06:16,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 13:06:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-19 13:06:16,322 INFO L87 Difference]: Start difference. First operand 378 states and 613 transitions. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 5 states have call predecessors, (103), 5 states have call successors, (103) [2023-12-19 13:06:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:16,899 INFO L93 Difference]: Finished difference Result 779 states and 1245 transitions. [2023-12-19 13:06:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 13:06:16,900 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 5 states have call predecessors, (103), 5 states have call successors, (103) Word has length 385 [2023-12-19 13:06:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:16,904 INFO L225 Difference]: With dead ends: 779 [2023-12-19 13:06:16,904 INFO L226 Difference]: Without dead ends: 402 [2023-12-19 13:06:16,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-19 13:06:16,908 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 579 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:16,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 767 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:06:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-19 13:06:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 394. [2023-12-19 13:06:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 267 states have (on average 1.4382022471910112) internal successors, (384), 267 states have internal predecessors, (384), 120 states have call successors, (120), 6 states have call predecessors, (120), 6 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-19 13:06:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 624 transitions. [2023-12-19 13:06:16,961 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 624 transitions. Word has length 385 [2023-12-19 13:06:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 624 transitions. [2023-12-19 13:06:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 5 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (103), 5 states have call predecessors, (103), 5 states have call successors, (103) [2023-12-19 13:06:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 624 transitions. [2023-12-19 13:06:16,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:16,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:16,967 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:16,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:17,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:17,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1045065904, now seen corresponding path program 1 times [2023-12-19 13:06:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230009804] [2023-12-19 13:06:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:17,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:17,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438330416] [2023-12-19 13:06:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:17,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:17,220 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) [2023-12-19 13:06:17,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 13:06:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:17,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:06:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2267 proven. 33 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2023-12-19 13:06:17,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 144 proven. 33 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 13:06:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230009804] [2023-12-19 13:06:17,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438330416] [2023-12-19 13:06:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438330416] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:17,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 13:06:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121874544] [2023-12-19 13:06:17,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 13:06:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 13:06:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:06:17,688 INFO L87 Difference]: Start difference. First operand 394 states and 624 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-19 13:06:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:18,487 INFO L93 Difference]: Finished difference Result 912 states and 1428 transitions. [2023-12-19 13:06:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 13:06:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 385 [2023-12-19 13:06:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:18,492 INFO L225 Difference]: With dead ends: 912 [2023-12-19 13:06:18,492 INFO L226 Difference]: Without dead ends: 519 [2023-12-19 13:06:18,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 761 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:06:18,493 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 834 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:18,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1215 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 13:06:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-19 13:06:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 487. [2023-12-19 13:06:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 308 states have (on average 1.37987012987013) internal successors, (425), 309 states have internal predecessors, (425), 168 states have call successors, (168), 10 states have call predecessors, (168), 10 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-19 13:06:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 761 transitions. [2023-12-19 13:06:18,529 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 761 transitions. Word has length 385 [2023-12-19 13:06:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:18,530 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 761 transitions. [2023-12-19 13:06:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-19 13:06:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 761 transitions. [2023-12-19 13:06:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:18,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:18,535 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:18,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:18,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:18,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:18,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1114268836, now seen corresponding path program 1 times [2023-12-19 13:06:18,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:18,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304485837] [2023-12-19 13:06:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:18,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213752064] [2023-12-19 13:06:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:18,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:18,784 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) [2023-12-19 13:06:18,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 13:06:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:19,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:06:19,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 13:06:19,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:06:19,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:19,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304485837] [2023-12-19 13:06:19,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:19,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213752064] [2023-12-19 13:06:19,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213752064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:06:19,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:06:19,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:06:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5139701] [2023-12-19 13:06:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:19,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:06:19,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:19,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:06:19,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:06:19,298 INFO L87 Difference]: Start difference. First operand 487 states and 761 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:19,510 INFO L93 Difference]: Finished difference Result 1090 states and 1709 transitions. [2023-12-19 13:06:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 13:06:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 385 [2023-12-19 13:06:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:19,515 INFO L225 Difference]: With dead ends: 1090 [2023-12-19 13:06:19,515 INFO L226 Difference]: Without dead ends: 689 [2023-12-19 13:06:19,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:06:19,516 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 137 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:19,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 844 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:06:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-19 13:06:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 684. [2023-12-19 13:06:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 441 states have (on average 1.3877551020408163) internal successors, (612), 442 states have internal predecessors, (612), 228 states have call successors, (228), 14 states have call predecessors, (228), 14 states have return successors, (228), 227 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-19 13:06:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1068 transitions. [2023-12-19 13:06:19,549 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1068 transitions. Word has length 385 [2023-12-19 13:06:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:19,549 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1068 transitions. [2023-12-19 13:06:19,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1068 transitions. [2023-12-19 13:06:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 13:06:19,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:19,551 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:19,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:19,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:19,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:19,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2011662114, now seen corresponding path program 1 times [2023-12-19 13:06:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:19,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936336655] [2023-12-19 13:06:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:19,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736062108] [2023-12-19 13:06:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:19,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:19,788 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) [2023-12-19 13:06:19,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 13:06:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:20,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:06:20,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 13:06:20,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:06:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936336655] [2023-12-19 13:06:20,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736062108] [2023-12-19 13:06:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736062108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:06:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:06:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:06:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615275366] [2023-12-19 13:06:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:06:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:06:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:06:20,067 INFO L87 Difference]: Start difference. First operand 684 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:20,113 INFO L93 Difference]: Finished difference Result 1282 states and 2004 transitions. [2023-12-19 13:06:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:06:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 385 [2023-12-19 13:06:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:20,117 INFO L225 Difference]: With dead ends: 1282 [2023-12-19 13:06:20,117 INFO L226 Difference]: Without dead ends: 684 [2023-12-19 13:06:20,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:06:20,118 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 99 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:20,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 517 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:06:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-19 13:06:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-12-19 13:06:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 441 states have (on average 1.380952380952381) internal successors, (609), 442 states have internal predecessors, (609), 228 states have call successors, (228), 14 states have call predecessors, (228), 14 states have return successors, (228), 227 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-19 13:06:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1065 transitions. [2023-12-19 13:06:20,161 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1065 transitions. Word has length 385 [2023-12-19 13:06:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:20,161 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1065 transitions. [2023-12-19 13:06:20,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 13:06:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1065 transitions. [2023-12-19 13:06:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2023-12-19 13:06:20,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:20,164 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:20,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:20,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:20,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:20,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1187054373, now seen corresponding path program 1 times [2023-12-19 13:06:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917906722] [2023-12-19 13:06:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:20,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:20,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49144970] [2023-12-19 13:06:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:20,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:20,414 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) [2023-12-19 13:06:20,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 13:06:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:20,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 13:06:20,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3479 proven. 228 refuted. 0 times theorem prover too weak. 3373 trivial. 0 not checked. [2023-12-19 13:06:21,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 57 proven. 120 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 13:06:21,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917906722] [2023-12-19 13:06:21,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49144970] [2023-12-19 13:06:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49144970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:21,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-12-19 13:06:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291205215] [2023-12-19 13:06:21,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 13:06:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:21,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 13:06:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:06:21,650 INFO L87 Difference]: Start difference. First operand 684 states and 1065 transitions. Second operand has 18 states, 18 states have (on average 8.166666666666666) internal successors, (147), 18 states have internal predecessors, (147), 5 states have call successors, (100), 3 states have call predecessors, (100), 6 states have return successors, (101), 5 states have call predecessors, (101), 5 states have call successors, (101) [2023-12-19 13:06:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:22,398 INFO L93 Difference]: Finished difference Result 1330 states and 2038 transitions. [2023-12-19 13:06:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 13:06:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.166666666666666) internal successors, (147), 18 states have internal predecessors, (147), 5 states have call successors, (100), 3 states have call predecessors, (100), 6 states have return successors, (101), 5 states have call predecessors, (101), 5 states have call successors, (101) Word has length 386 [2023-12-19 13:06:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:22,404 INFO L225 Difference]: With dead ends: 1330 [2023-12-19 13:06:22,404 INFO L226 Difference]: Without dead ends: 732 [2023-12-19 13:06:22,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2023-12-19 13:06:22,406 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 765 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:22,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 950 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 13:06:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-12-19 13:06:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 716. [2023-12-19 13:06:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 465 states have (on average 1.3419354838709678) internal successors, (624), 466 states have internal predecessors, (624), 228 states have call successors, (228), 22 states have call predecessors, (228), 22 states have return successors, (228), 227 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-19 13:06:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1080 transitions. [2023-12-19 13:06:22,447 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1080 transitions. Word has length 386 [2023-12-19 13:06:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:22,447 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1080 transitions. [2023-12-19 13:06:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.166666666666666) internal successors, (147), 18 states have internal predecessors, (147), 5 states have call successors, (100), 3 states have call predecessors, (100), 6 states have return successors, (101), 5 states have call predecessors, (101), 5 states have call successors, (101) [2023-12-19 13:06:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1080 transitions. [2023-12-19 13:06:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-19 13:06:22,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:22,449 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:22,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:22,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:22,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:22,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash 244872396, now seen corresponding path program 1 times [2023-12-19 13:06:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482386553] [2023-12-19 13:06:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:22,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143200202] [2023-12-19 13:06:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:22,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:22,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:22,712 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) [2023-12-19 13:06:22,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 13:06:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:23,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 13:06:23,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3373 proven. 339 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2023-12-19 13:06:24,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 114 proven. 237 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-12-19 13:06:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482386553] [2023-12-19 13:06:25,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143200202] [2023-12-19 13:06:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143200202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:25,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:25,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-12-19 13:06:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299477135] [2023-12-19 13:06:25,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 13:06:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:25,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 13:06:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:06:25,382 INFO L87 Difference]: Start difference. First operand 716 states and 1080 transitions. Second operand has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (120), 5 states have call predecessors, (120), 9 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2023-12-19 13:06:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:27,895 INFO L93 Difference]: Finished difference Result 3576 states and 5427 transitions. [2023-12-19 13:06:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 13:06:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (120), 5 states have call predecessors, (120), 9 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) Word has length 387 [2023-12-19 13:06:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:27,908 INFO L225 Difference]: With dead ends: 3576 [2023-12-19 13:06:27,909 INFO L226 Difference]: Without dead ends: 2954 [2023-12-19 13:06:27,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=917, Invalid=1839, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 13:06:27,915 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2420 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:27,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 2879 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 13:06:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2023-12-19 13:06:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1777. [2023-12-19 13:06:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1269 states have (on average 1.405043341213554) internal successors, (1783), 1273 states have internal predecessors, (1783), 459 states have call successors, (459), 48 states have call predecessors, (459), 48 states have return successors, (459), 455 states have call predecessors, (459), 459 states have call successors, (459) [2023-12-19 13:06:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2701 transitions. [2023-12-19 13:06:28,101 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2701 transitions. Word has length 387 [2023-12-19 13:06:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:28,101 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2701 transitions. [2023-12-19 13:06:28,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.304347826086956) internal successors, (168), 22 states have internal predecessors, (168), 8 states have call successors, (120), 5 states have call predecessors, (120), 9 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2023-12-19 13:06:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2701 transitions. [2023-12-19 13:06:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-19 13:06:28,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:28,105 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:28,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 13:06:28,307 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,SelfDestructingSolverStorable7 [2023-12-19 13:06:28,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:28,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1126934902, now seen corresponding path program 1 times [2023-12-19 13:06:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435395496] [2023-12-19 13:06:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:28,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871049170] [2023-12-19 13:06:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:28,372 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) [2023-12-19 13:06:28,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 13:06:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:28,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 13:06:28,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3137 proven. 120 refuted. 0 times theorem prover too weak. 3823 trivial. 0 not checked. [2023-12-19 13:06:29,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 57 proven. 120 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 13:06:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435395496] [2023-12-19 13:06:31,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871049170] [2023-12-19 13:06:31,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871049170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:31,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 13:06:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565725857] [2023-12-19 13:06:31,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:31,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 13:06:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 13:06:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 13:06:31,207 INFO L87 Difference]: Start difference. First operand 1777 states and 2701 transitions. Second operand has 12 states, 12 states have (on average 13.0) internal successors, (156), 12 states have internal predecessors, (156), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 13:06:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:33,420 INFO L93 Difference]: Finished difference Result 5595 states and 8466 transitions. [2023-12-19 13:06:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 13:06:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.0) internal successors, (156), 12 states have internal predecessors, (156), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) Word has length 387 [2023-12-19 13:06:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:33,433 INFO L225 Difference]: With dead ends: 5595 [2023-12-19 13:06:33,433 INFO L226 Difference]: Without dead ends: 3920 [2023-12-19 13:06:33,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2023-12-19 13:06:33,438 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1496 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:33,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2134 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 13:06:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2023-12-19 13:06:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3059. [2023-12-19 13:06:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 2143 states have (on average 1.379841343910406) internal successors, (2957), 2147 states have internal predecessors, (2957), 819 states have call successors, (819), 96 states have call predecessors, (819), 96 states have return successors, (819), 815 states have call predecessors, (819), 819 states have call successors, (819) [2023-12-19 13:06:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4595 transitions. [2023-12-19 13:06:33,779 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4595 transitions. Word has length 387 [2023-12-19 13:06:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:33,779 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 4595 transitions. [2023-12-19 13:06:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.0) internal successors, (156), 12 states have internal predecessors, (156), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 13:06:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4595 transitions. [2023-12-19 13:06:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-12-19 13:06:33,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:33,782 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:33,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:33,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:33,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 19356385, now seen corresponding path program 1 times [2023-12-19 13:06:33,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:33,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142883722] [2023-12-19 13:06:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:33,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:34,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091482280] [2023-12-19 13:06:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:34,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:34,032 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) [2023-12-19 13:06:34,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 13:06:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:35,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 13:06:35,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3655 proven. 456 refuted. 0 times theorem prover too weak. 2969 trivial. 0 not checked. [2023-12-19 13:06:38,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:07:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:07:12,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142883722] [2023-12-19 13:07:12,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:07:12,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091482280] [2023-12-19 13:07:12,630 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 13:07:12,633 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 139 [2023-12-19 13:07:12,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 13:07:12,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 13:07:12,831 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:364) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-19 13:07:12,834 INFO L158 Benchmark]: Toolchain (without parser) took 61099.32ms. Allocated memory was 233.8MB in the beginning and 666.9MB in the end (delta: 433.1MB). Free memory was 189.9MB in the beginning and 433.2MB in the end (delta: -243.3MB). Peak memory consumption was 190.3MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,834 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:07:12,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.34ms. Allocated memory is still 233.8MB. Free memory was 189.9MB in the beginning and 164.1MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.05ms. Allocated memory is still 233.8MB. Free memory was 164.1MB in the beginning and 148.0MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,835 INFO L158 Benchmark]: Boogie Preprocessor took 141.85ms. Allocated memory is still 233.8MB. Free memory was 148.0MB in the beginning and 183.6MB in the end (delta: -35.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,835 INFO L158 Benchmark]: RCFGBuilder took 821.55ms. Allocated memory is still 233.8MB. Free memory was 183.6MB in the beginning and 180.3MB in the end (delta: 3.3MB). Peak memory consumption was 75.1MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,835 INFO L158 Benchmark]: TraceAbstraction took 59705.37ms. Allocated memory was 233.8MB in the beginning and 666.9MB in the end (delta: 433.1MB). Free memory was 179.2MB in the beginning and 433.2MB in the end (delta: -254.0MB). Peak memory consumption was 179.3MB. Max. memory is 8.0GB. [2023-12-19 13:07:12,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.34ms. Allocated memory is still 233.8MB. Free memory was 189.9MB in the beginning and 164.1MB in the end (delta: 25.8MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 93.05ms. Allocated memory is still 233.8MB. Free memory was 164.1MB in the beginning and 148.0MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 141.85ms. Allocated memory is still 233.8MB. Free memory was 148.0MB in the beginning and 183.6MB in the end (delta: -35.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. * RCFGBuilder took 821.55ms. Allocated memory is still 233.8MB. Free memory was 183.6MB in the beginning and 180.3MB in the end (delta: 3.3MB). Peak memory consumption was 75.1MB. Max. memory is 8.0GB. * TraceAbstraction took 59705.37ms. Allocated memory was 233.8MB in the beginning and 666.9MB in the end (delta: 433.1MB). Free memory was 179.2MB in the beginning and 433.2MB in the end (delta: -254.0MB). Peak memory consumption was 179.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...