/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-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 13:05:41,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 13:05:41,256 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 13:05:41,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 13:05:41,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 13:05:41,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 13:05:41,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 13:05:41,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 13:05:41,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 13:05:41,297 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 13:05:41,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 13:05:41,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 13:05:41,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 13:05:41,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 13:05:41,300 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 13:05:41,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 13:05:41,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 13:05:41,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 13:05:41,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 13:05:41,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 13:05:41,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 13:05:41,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 13:05:41,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 13:05:41,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 13:05:41,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 13:05:41,304 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 13:05:41,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 13:05:41,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 13:05:41,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 13:05:41,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 13:05:41,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 13:05:41,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 13:05:41,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:05:41,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 13:05:41,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 13:05:41,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 13:05:41,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 13:05:41,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 13:05:41,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 13:05:41,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 13:05:41,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 13:05:41,556 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 13:05:41,556 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 13:05:41,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-67.i [2023-12-19 13:05:42,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 13:05:42,899 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 13:05:42,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-67.i [2023-12-19 13:05:42,909 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b9eed90/01dcedbb95864ffc8678f7684a81d280/FLAG3215b8b5d [2023-12-19 13:05:42,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b9eed90/01dcedbb95864ffc8678f7684a81d280 [2023-12-19 13:05:42,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 13:05:42,926 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 13:05:42,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 13:05:42,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 13:05:42,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 13:05:42,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:05:42" (1/1) ... [2023-12-19 13:05:42,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63de6aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:42, skipping insertion in model container [2023-12-19 13:05:42,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:05:42" (1/1) ... [2023-12-19 13:05:42,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 13:05:43,116 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-67.i[916,929] [2023-12-19 13:05:43,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:05:43,272 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 13:05:43,281 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-67.i[916,929] [2023-12-19 13:05:43,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 13:05:43,356 INFO L206 MainTranslator]: Completed translation [2023-12-19 13:05:43,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43 WrapperNode [2023-12-19 13:05:43,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 13:05:43,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 13:05:43,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 13:05:43,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 13:05:43,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,446 INFO L138 Inliner]: procedures = 26, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 535 [2023-12-19 13:05:43,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 13:05:43,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 13:05:43,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 13:05:43,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 13:05:43,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,508 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 13:05:43,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 13:05:43,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 13:05:43,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 13:05:43,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 13:05:43,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (1/1) ... [2023-12-19 13:05:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 13:05:43,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:43,641 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 13:05:43,670 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 13:05:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 13:05:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 13:05:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 13:05:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 13:05:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 13:05:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 13:05:43,777 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 13:05:43,779 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 13:05:44,388 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 13:05:44,417 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 13:05:44,417 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 13:05:44,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:05:44 BoogieIcfgContainer [2023-12-19 13:05:44,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 13:05:44,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 13:05:44,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 13:05:44,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 13:05:44,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:05:42" (1/3) ... [2023-12-19 13:05:44,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f1349f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:05:44, skipping insertion in model container [2023-12-19 13:05:44,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:05:43" (2/3) ... [2023-12-19 13:05:44,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f1349f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:05:44, skipping insertion in model container [2023-12-19 13:05:44,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:05:44" (3/3) ... [2023-12-19 13:05:44,424 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-67.i [2023-12-19 13:05:44,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 13:05:44,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 13:05:44,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 13:05:44,490 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;@7f4017a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 13:05:44,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 13:05:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 136 states have (on average 1.5808823529411764) internal successors, (215), 137 states have internal predecessors, (215), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 13:05:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-19 13:05:44,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:44,515 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:44,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:44,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1562190071, now seen corresponding path program 1 times [2023-12-19 13:05:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:44,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498574027] [2023-12-19 13:05:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:44,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:44,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:44,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951467023] [2023-12-19 13:05:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:44,824 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 13:05:44,852 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 13:05:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:45,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 13:05:45,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:45,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498574027] [2023-12-19 13:05:45,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951467023] [2023-12-19 13:05:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951467023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:45,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:45,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 13:05:45,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465285331] [2023-12-19 13:05:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 13:05:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 13:05:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 13:05:45,218 INFO L87 Difference]: Start difference. First operand has 191 states, 136 states have (on average 1.5808823529411764) internal successors, (215), 137 states have internal predecessors, (215), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:45,278 INFO L93 Difference]: Finished difference Result 377 states and 684 transitions. [2023-12-19 13:05:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 13:05:45,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 346 [2023-12-19 13:05:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:45,293 INFO L225 Difference]: With dead ends: 377 [2023-12-19 13:05:45,293 INFO L226 Difference]: Without dead ends: 187 [2023-12-19 13:05:45,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 345 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 13:05:45,305 INFO L413 NwaCegarLoop]: 304 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, 304 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 13:05:45,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:05:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-19 13:05:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-12-19 13:05:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 133 states have (on average 1.5263157894736843) internal successors, (203), 133 states have internal predecessors, (203), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 13:05:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 307 transitions. [2023-12-19 13:05:45,363 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 307 transitions. Word has length 346 [2023-12-19 13:05:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:45,365 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 307 transitions. [2023-12-19 13:05:45,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 307 transitions. [2023-12-19 13:05:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-19 13:05:45,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:45,371 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:45,380 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 13:05:45,578 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 13:05:45,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:45,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2006090745, now seen corresponding path program 1 times [2023-12-19 13:05:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104062741] [2023-12-19 13:05:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:45,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:45,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584692148] [2023-12-19 13:05:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:45,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:45,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:45,780 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 13:05:45,804 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 13:05:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:46,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:05:46,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:46,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:46,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104062741] [2023-12-19 13:05:46,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:46,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584692148] [2023-12-19 13:05:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584692148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:46,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:05:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761656615] [2023-12-19 13:05:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:05:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:05:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:05:46,163 INFO L87 Difference]: Start difference. First operand 187 states and 307 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:46,220 INFO L93 Difference]: Finished difference Result 466 states and 769 transitions. [2023-12-19 13:05:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:05:46,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 346 [2023-12-19 13:05:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:46,228 INFO L225 Difference]: With dead ends: 466 [2023-12-19 13:05:46,228 INFO L226 Difference]: Without dead ends: 280 [2023-12-19 13:05:46,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 344 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 13:05:46,231 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 148 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:46,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 599 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:05:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-19 13:05:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 198. [2023-12-19 13:05:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 144 states have internal predecessors, (222), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 13:05:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 326 transitions. [2023-12-19 13:05:46,262 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 326 transitions. Word has length 346 [2023-12-19 13:05:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:46,263 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 326 transitions. [2023-12-19 13:05:46,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 326 transitions. [2023-12-19 13:05:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-12-19 13:05:46,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:46,275 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:46,284 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 13:05:46,481 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 13:05:46,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:46,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1395390213, now seen corresponding path program 1 times [2023-12-19 13:05:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485470267] [2023-12-19 13:05:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:46,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342422443] [2023-12-19 13:05:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:46,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:46,561 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 13:05:46,566 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 13:05:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:46,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 13:05:46,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:46,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:46,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:46,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485470267] [2023-12-19 13:05:46,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:46,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342422443] [2023-12-19 13:05:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342422443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:05:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520800536] [2023-12-19 13:05:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:46,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:05:46,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:05:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:05:46,838 INFO L87 Difference]: Start difference. First operand 198 states and 326 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:46,950 INFO L93 Difference]: Finished difference Result 590 states and 972 transitions. [2023-12-19 13:05:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:05:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 346 [2023-12-19 13:05:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:46,958 INFO L225 Difference]: With dead ends: 590 [2023-12-19 13:05:46,958 INFO L226 Difference]: Without dead ends: 393 [2023-12-19 13:05:46,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 344 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 13:05:46,964 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 302 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:46,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 792 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 13:05:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-19 13:05:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 391. [2023-12-19 13:05:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 284 states have (on average 1.5352112676056338) internal successors, (436), 284 states have internal predecessors, (436), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-19 13:05:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 644 transitions. [2023-12-19 13:05:47,031 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 644 transitions. Word has length 346 [2023-12-19 13:05:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:47,033 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 644 transitions. [2023-12-19 13:05:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 644 transitions. [2023-12-19 13:05:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-19 13:05:47,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:47,038 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:47,051 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 13:05:47,246 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 13:05:47,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:47,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1180545564, now seen corresponding path program 1 times [2023-12-19 13:05:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62846358] [2023-12-19 13:05:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:47,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:47,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604797447] [2023-12-19 13:05:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:47,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:47,305 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 13:05:47,324 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 13:05:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:47,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:05:47,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:48,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62846358] [2023-12-19 13:05:48,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604797447] [2023-12-19 13:05:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604797447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:48,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:48,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:05:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453640134] [2023-12-19 13:05:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:05:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:05:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:05:48,421 INFO L87 Difference]: Start difference. First operand 391 states and 644 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:48,806 INFO L93 Difference]: Finished difference Result 1293 states and 2129 transitions. [2023-12-19 13:05:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:05:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 347 [2023-12-19 13:05:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:48,812 INFO L225 Difference]: With dead ends: 1293 [2023-12-19 13:05:48,812 INFO L226 Difference]: Without dead ends: 903 [2023-12-19 13:05:48,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:05:48,814 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 366 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:48,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1168 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:05:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-12-19 13:05:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 779. [2023-12-19 13:05:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 566 states have (on average 1.530035335689046) internal successors, (866), 566 states have internal predecessors, (866), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-19 13:05:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1282 transitions. [2023-12-19 13:05:48,892 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1282 transitions. Word has length 347 [2023-12-19 13:05:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:48,893 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1282 transitions. [2023-12-19 13:05:48,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1282 transitions. [2023-12-19 13:05:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-19 13:05:48,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:48,897 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:48,908 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 13:05:49,104 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 13:05:49,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:49,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1196064282, now seen corresponding path program 1 times [2023-12-19 13:05:49,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485257809] [2023-12-19 13:05:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:49,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907236842] [2023-12-19 13:05:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:49,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:49,166 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 13:05:49,185 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 13:05:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:49,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:05:49,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:49,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:49,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485257809] [2023-12-19 13:05:49,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907236842] [2023-12-19 13:05:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907236842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:49,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 13:05:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558571501] [2023-12-19 13:05:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 13:05:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 13:05:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 13:05:49,890 INFO L87 Difference]: Start difference. First operand 779 states and 1282 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:51,153 INFO L93 Difference]: Finished difference Result 4379 states and 7148 transitions. [2023-12-19 13:05:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 13:05:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 347 [2023-12-19 13:05:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:51,171 INFO L225 Difference]: With dead ends: 4379 [2023-12-19 13:05:51,171 INFO L226 Difference]: Without dead ends: 3601 [2023-12-19 13:05:51,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-19 13:05:51,174 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1178 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:51,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 3429 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 13:05:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2023-12-19 13:05:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 1787. [2023-12-19 13:05:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1362 states have (on average 1.5609397944199705) internal successors, (2126), 1362 states have internal predecessors, (2126), 416 states have call successors, (416), 8 states have call predecessors, (416), 8 states have return successors, (416), 416 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-19 13:05:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2958 transitions. [2023-12-19 13:05:51,468 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2958 transitions. Word has length 347 [2023-12-19 13:05:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:51,469 INFO L495 AbstractCegarLoop]: Abstraction has 1787 states and 2958 transitions. [2023-12-19 13:05:51,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2958 transitions. [2023-12-19 13:05:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-19 13:05:51,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:51,475 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:51,488 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 13:05:51,687 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 13:05:51,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:51,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 684089123, now seen corresponding path program 1 times [2023-12-19 13:05:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810343900] [2023-12-19 13:05:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:51,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:51,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047841588] [2023-12-19 13:05:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:51,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:51,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:51,744 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 13:05:51,761 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 13:05:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:51,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 13:05:52,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:05:52,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810343900] [2023-12-19 13:05:52,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047841588] [2023-12-19 13:05:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047841588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:52,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:05:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780413493] [2023-12-19 13:05:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:05:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:05:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:05:52,849 INFO L87 Difference]: Start difference. First operand 1787 states and 2958 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:53,462 INFO L93 Difference]: Finished difference Result 5399 states and 8910 transitions. [2023-12-19 13:05:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 13:05:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 348 [2023-12-19 13:05:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:53,479 INFO L225 Difference]: With dead ends: 5399 [2023-12-19 13:05:53,479 INFO L226 Difference]: Without dead ends: 3613 [2023-12-19 13:05:53,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 13:05:53,485 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 684 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:53,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1158 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 13:05:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2023-12-19 13:05:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 2643. [2023-12-19 13:05:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2006 states have (on average 1.5583250249252243) internal successors, (3126), 2006 states have internal predecessors, (3126), 624 states have call successors, (624), 12 states have call predecessors, (624), 12 states have return successors, (624), 624 states have call predecessors, (624), 624 states have call successors, (624) [2023-12-19 13:05:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 4374 transitions. [2023-12-19 13:05:53,746 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 4374 transitions. Word has length 348 [2023-12-19 13:05:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:53,747 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 4374 transitions. [2023-12-19 13:05:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 4374 transitions. [2023-12-19 13:05:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-19 13:05:53,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:53,752 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:53,759 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 13:05:53,959 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 13:05:53,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:53,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash 550075617, now seen corresponding path program 1 times [2023-12-19 13:05:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999410842] [2023-12-19 13:05:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:54,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:54,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917902147] [2023-12-19 13:05:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:54,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:54,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:54,004 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 13:05:54,024 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 13:05:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:54,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:05:54,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2361 proven. 48 refuted. 0 times theorem prover too weak. 2895 trivial. 0 not checked. [2023-12-19 13:05:54,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:05:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 105 proven. 48 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:05:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999410842] [2023-12-19 13:05:54,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917902147] [2023-12-19 13:05:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917902147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:05:54,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:05:54,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:05:54,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768900595] [2023-12-19 13:05:54,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:05:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:05:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:05:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:05:54,680 INFO L87 Difference]: Start difference. First operand 2643 states and 4374 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 13:05:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:55,053 INFO L93 Difference]: Finished difference Result 5357 states and 8807 transitions. [2023-12-19 13:05:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:05:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 348 [2023-12-19 13:05:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:55,075 INFO L225 Difference]: With dead ends: 5357 [2023-12-19 13:05:55,076 INFO L226 Difference]: Without dead ends: 2715 [2023-12-19 13:05:55,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 688 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:05:55,084 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 191 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:55,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 629 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:05:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2023-12-19 13:05:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2691. [2023-12-19 13:05:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2042 states have (on average 1.5406464250734575) internal successors, (3146), 2042 states have internal predecessors, (3146), 624 states have call successors, (624), 24 states have call predecessors, (624), 24 states have return successors, (624), 624 states have call predecessors, (624), 624 states have call successors, (624) [2023-12-19 13:05:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 4394 transitions. [2023-12-19 13:05:55,377 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 4394 transitions. Word has length 348 [2023-12-19 13:05:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:55,378 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 4394 transitions. [2023-12-19 13:05:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-19 13:05:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 4394 transitions. [2023-12-19 13:05:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:05:55,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:55,382 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:55,395 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 13:05:55,595 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 13:05:55,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:55,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1869474846, now seen corresponding path program 1 times [2023-12-19 13:05:55,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:55,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049337077] [2023-12-19 13:05:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:55,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:55,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817477664] [2023-12-19 13:05:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:55,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:55,644 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 13:05:55,661 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 13:05:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:55,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 13:05:55,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:05:55,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:05:55,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:05:55,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049337077] [2023-12-19 13:05:55,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:05:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817477664] [2023-12-19 13:05:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817477664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:05:55,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:05:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:05:55,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779335050] [2023-12-19 13:05:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:05:55,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:05:55,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:05:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:05:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:05:55,953 INFO L87 Difference]: Start difference. First operand 2691 states and 4394 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:05:56,351 INFO L93 Difference]: Finished difference Result 4073 states and 6619 transitions. [2023-12-19 13:05:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 13:05:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:05:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:05:56,358 INFO L225 Difference]: With dead ends: 4073 [2023-12-19 13:05:56,358 INFO L226 Difference]: Without dead ends: 1383 [2023-12-19 13:05:56,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 13:05:56,364 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 376 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:05:56,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 599 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:05:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-19 13:05:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1359. [2023-12-19 13:05:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1028 states have (on average 1.5038910505836576) internal successors, (1546), 1028 states have internal predecessors, (1546), 312 states have call successors, (312), 18 states have call predecessors, (312), 18 states have return successors, (312), 312 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-19 13:05:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 2170 transitions. [2023-12-19 13:05:56,490 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 2170 transitions. Word has length 349 [2023-12-19 13:05:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:05:56,491 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 2170 transitions. [2023-12-19 13:05:56,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 2 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:05:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 2170 transitions. [2023-12-19 13:05:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:05:56,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:05:56,494 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:56,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 13:05:56,701 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 13:05:56,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:05:56,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:05:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2025209257, now seen corresponding path program 1 times [2023-12-19 13:05:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:05:56,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668305270] [2023-12-19 13:05:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:05:56,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:05:56,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650547857] [2023-12-19 13:05:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:05:56,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:05:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:05:56,739 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 13:05:56,760 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 13:05:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:05:57,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 13:05:57,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:05:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2661 proven. 66 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2023-12-19 13:05:57,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:06:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668305270] [2023-12-19 13:06:02,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650547857] [2023-12-19 13:06:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650547857] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 13:06:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 13:06:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2023-12-19 13:06:02,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807248043] [2023-12-19 13:06:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 13:06:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 13:06:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-19 13:06:02,631 INFO L87 Difference]: Start difference. First operand 1359 states and 2170 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:06:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:06,913 INFO L93 Difference]: Finished difference Result 11470 states and 17943 transitions. [2023-12-19 13:06:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-19 13:06:06,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:06:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:06,955 INFO L225 Difference]: With dead ends: 11470 [2023-12-19 13:06:06,955 INFO L226 Difference]: Without dead ends: 10112 [2023-12-19 13:06:06,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 688 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=481, Invalid=1871, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 13:06:06,964 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2007 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 1248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1248 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 2334 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1248 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 13:06:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10112 states. [2023-12-19 13:06:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10112 to 3691. [2023-12-19 13:06:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2850 states have (on average 1.5066666666666666) internal successors, (4294), 2856 states have internal predecessors, (4294), 798 states have call successors, (798), 42 states have call predecessors, (798), 42 states have return successors, (798), 792 states have call predecessors, (798), 798 states have call successors, (798) [2023-12-19 13:06:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 5890 transitions. [2023-12-19 13:06:07,688 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 5890 transitions. Word has length 349 [2023-12-19 13:06:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:07,691 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 5890 transitions. [2023-12-19 13:06:07,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:06:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 5890 transitions. [2023-12-19 13:06:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:06:07,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:07,697 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:07,712 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 13:06:07,908 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 13:06:07,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:07,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1207560807, now seen corresponding path program 1 times [2023-12-19 13:06:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767419542] [2023-12-19 13:06:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:07,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:07,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114897401] [2023-12-19 13:06:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:07,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:08,021 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 13:06:08,031 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 13:06:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:08,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:06:08,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:06:09,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:06:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767419542] [2023-12-19 13:06:09,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:09,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114897401] [2023-12-19 13:06:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114897401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:06:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:06:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:06:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543581405] [2023-12-19 13:06:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:06:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 13:06:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 13:06:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:06:09,191 INFO L87 Difference]: Start difference. First operand 3691 states and 5890 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:06:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:10,361 INFO L93 Difference]: Finished difference Result 11219 states and 17874 transitions. [2023-12-19 13:06:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:06:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:06:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:10,394 INFO L225 Difference]: With dead ends: 11219 [2023-12-19 13:06:10,394 INFO L226 Difference]: Without dead ends: 7529 [2023-12-19 13:06:10,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:06:10,406 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 600 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:10,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1959 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 13:06:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2023-12-19 13:06:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 6517. [2023-12-19 13:06:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6517 states, 5116 states have (on average 1.5054730258014073) internal successors, (7702), 5126 states have internal predecessors, (7702), 1330 states have call successors, (1330), 70 states have call predecessors, (1330), 70 states have return successors, (1330), 1320 states have call predecessors, (1330), 1330 states have call successors, (1330) [2023-12-19 13:06:11,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6517 states to 6517 states and 10362 transitions. [2023-12-19 13:06:11,247 INFO L78 Accepts]: Start accepts. Automaton has 6517 states and 10362 transitions. Word has length 349 [2023-12-19 13:06:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:11,248 INFO L495 AbstractCegarLoop]: Abstraction has 6517 states and 10362 transitions. [2023-12-19 13:06:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:06:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6517 states and 10362 transitions. [2023-12-19 13:06:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:06:11,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:11,266 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:11,274 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 13:06:11,474 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 13:06:11,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:11,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -816531295, now seen corresponding path program 1 times [2023-12-19 13:06:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073254776] [2023-12-19 13:06:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:11,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:11,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28032811] [2023-12-19 13:06:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:11,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:11,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:06:11,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 13:06:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:11,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 13:06:11,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1773 proven. 30 refuted. 0 times theorem prover too weak. 3501 trivial. 0 not checked. [2023-12-19 13:06:12,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 123 proven. 30 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:06:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073254776] [2023-12-19 13:06:12,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:12,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28032811] [2023-12-19 13:06:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28032811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:12,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:12,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 13:06:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105240880] [2023-12-19 13:06:12,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:12,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 13:06:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 13:06:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-19 13:06:12,639 INFO L87 Difference]: Start difference. First operand 6517 states and 10362 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2023-12-19 13:06:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:06:14,927 INFO L93 Difference]: Finished difference Result 19855 states and 31309 transitions. [2023-12-19 13:06:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 13:06:14,928 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) Word has length 349 [2023-12-19 13:06:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:06:14,965 INFO L225 Difference]: With dead ends: 19855 [2023-12-19 13:06:14,965 INFO L226 Difference]: Without dead ends: 13339 [2023-12-19 13:06:14,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 688 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2023-12-19 13:06:14,983 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 2080 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:06:14,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 2764 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 13:06:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13339 states. [2023-12-19 13:06:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13339 to 9153. [2023-12-19 13:06:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9153 states, 7736 states have (on average 1.531282316442606) internal successors, (11846), 7746 states have internal predecessors, (11846), 1330 states have call successors, (1330), 86 states have call predecessors, (1330), 86 states have return successors, (1330), 1320 states have call predecessors, (1330), 1330 states have call successors, (1330) [2023-12-19 13:06:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9153 states to 9153 states and 14506 transitions. [2023-12-19 13:06:15,891 INFO L78 Accepts]: Start accepts. Automaton has 9153 states and 14506 transitions. Word has length 349 [2023-12-19 13:06:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:06:15,891 INFO L495 AbstractCegarLoop]: Abstraction has 9153 states and 14506 transitions. [2023-12-19 13:06:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2023-12-19 13:06:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9153 states and 14506 transitions. [2023-12-19 13:06:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:06:15,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:06:15,900 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:15,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 13:06:16,109 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:06:16,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:06:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1111741407, now seen corresponding path program 1 times [2023-12-19 13:06:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:06:16,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346634762] [2023-12-19 13:06:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:06:16,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:06:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218893992] [2023-12-19 13:06:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:06:16,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:06:16,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:06:16,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:06:16,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 13:06:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:06:16,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 13:06:16,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:06:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2661 proven. 66 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2023-12-19 13:06:17,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:06:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 87 proven. 66 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:06:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:06:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346634762] [2023-12-19 13:06:34,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:06:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218893992] [2023-12-19 13:06:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218893992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:06:34,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:06:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 22 [2023-12-19 13:06:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397012079] [2023-12-19 13:06:34,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:06:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 13:06:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:06:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 13:06:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-12-19 13:06:34,287 INFO L87 Difference]: Start difference. First operand 9153 states and 14506 transitions. Second operand has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2023-12-19 13:07:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:07:06,185 INFO L93 Difference]: Finished difference Result 47113 states and 73096 transitions. [2023-12-19 13:07:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-12-19 13:07:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) Word has length 349 [2023-12-19 13:07:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:07:06,456 INFO L225 Difference]: With dead ends: 47113 [2023-12-19 13:07:06,457 INFO L226 Difference]: Without dead ends: 41933 [2023-12-19 13:07:06,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 712 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17864 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=7439, Invalid=30003, Unknown=0, NotChecked=0, Total=37442 [2023-12-19 13:07:06,510 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 8553 mSDsluCounter, 6607 mSDsCounter, 0 mSdLazyCounter, 8707 mSolverCounterSat, 4423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8664 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 13130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4423 IncrementalHoareTripleChecker+Valid, 8707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-19 13:07:06,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8664 Valid, 7480 Invalid, 13130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4423 Valid, 8707 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-19 13:07:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41933 states. [2023-12-19 13:07:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41933 to 11671. [2023-12-19 13:07:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11671 states, 9910 states have (on average 1.5297679112008074) internal successors, (15160), 9926 states have internal predecessors, (15160), 1650 states have call successors, (1650), 110 states have call predecessors, (1650), 110 states have return successors, (1650), 1634 states have call predecessors, (1650), 1650 states have call successors, (1650) [2023-12-19 13:07:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11671 states to 11671 states and 18460 transitions. [2023-12-19 13:07:08,644 INFO L78 Accepts]: Start accepts. Automaton has 11671 states and 18460 transitions. Word has length 349 [2023-12-19 13:07:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:07:08,645 INFO L495 AbstractCegarLoop]: Abstraction has 11671 states and 18460 transitions. [2023-12-19 13:07:08,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.090909090909092) internal successors, (178), 22 states have internal predecessors, (178), 4 states have call successors, (104), 3 states have call predecessors, (104), 5 states have return successors, (104), 4 states have call predecessors, (104), 4 states have call successors, (104) [2023-12-19 13:07:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11671 states and 18460 transitions. [2023-12-19 13:07:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:07:08,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:07:08,657 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:08,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 13:07:08,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 13:07:08,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:07:08,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:07:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash -753332449, now seen corresponding path program 1 times [2023-12-19 13:07:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:07:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805831445] [2023-12-19 13:07:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:08,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:07:08,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:07:08,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511729931] [2023-12-19 13:07:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:08,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:07:08,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:07:08,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:07:08,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 13:07:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:07:09,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:07:09,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:07:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:07:10,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:07:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:07:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805831445] [2023-12-19 13:07:10,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:07:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511729931] [2023-12-19 13:07:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511729931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:07:10,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:07:10,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 13:07:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646717813] [2023-12-19 13:07:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:07:10,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:07:10,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:07:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:07:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:07:10,114 INFO L87 Difference]: Start difference. First operand 11671 states and 18460 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:07:13,085 INFO L93 Difference]: Finished difference Result 32238 states and 50843 transitions. [2023-12-19 13:07:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 13:07:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:07:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:07:13,132 INFO L225 Difference]: With dead ends: 32238 [2023-12-19 13:07:13,132 INFO L226 Difference]: Without dead ends: 20552 [2023-12-19 13:07:13,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:07:13,155 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 711 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 13:07:13,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1506 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 13:07:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20552 states. [2023-12-19 13:07:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20552 to 18837. [2023-12-19 13:07:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18837 states, 15888 states have (on average 1.52555387713998) internal successors, (24238), 15916 states have internal predecessors, (24238), 2768 states have call successors, (2768), 180 states have call predecessors, (2768), 180 states have return successors, (2768), 2740 states have call predecessors, (2768), 2768 states have call successors, (2768) [2023-12-19 13:07:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18837 states to 18837 states and 29774 transitions. [2023-12-19 13:07:15,441 INFO L78 Accepts]: Start accepts. Automaton has 18837 states and 29774 transitions. Word has length 349 [2023-12-19 13:07:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:07:15,441 INFO L495 AbstractCegarLoop]: Abstraction has 18837 states and 29774 transitions. [2023-12-19 13:07:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18837 states and 29774 transitions. [2023-12-19 13:07:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:07:15,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:07:15,455 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 13:07:15,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 13:07:15,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:07:15,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:07:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash -3636803, now seen corresponding path program 1 times [2023-12-19 13:07:15,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:07:15,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089561024] [2023-12-19 13:07:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:15,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:07:15,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:07:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095720591] [2023-12-19 13:07:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:15,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:07:15,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:07:15,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:07:15,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 13:07:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:07:15,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 13:07:15,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:07:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:07:16,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:07:16,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:07:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089561024] [2023-12-19 13:07:16,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:07:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095720591] [2023-12-19 13:07:16,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095720591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:07:16,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:07:16,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 13:07:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484258654] [2023-12-19 13:07:16,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:07:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 13:07:16,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:07:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 13:07:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 13:07:16,025 INFO L87 Difference]: Start difference. First operand 18837 states and 29774 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:07:19,839 INFO L93 Difference]: Finished difference Result 55003 states and 86997 transitions. [2023-12-19 13:07:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 13:07:19,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:07:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:07:19,909 INFO L225 Difference]: With dead ends: 55003 [2023-12-19 13:07:19,909 INFO L226 Difference]: Without dead ends: 36167 [2023-12-19 13:07:19,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 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 13:07:19,933 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 283 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:07:19,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 597 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:07:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36167 states. [2023-12-19 13:07:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36167 to 35696. [2023-12-19 13:07:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35696 states, 29799 states have (on average 1.5095473002449746) internal successors, (44983), 29855 states have internal predecessors, (44983), 5536 states have call successors, (5536), 360 states have call predecessors, (5536), 360 states have return successors, (5536), 5480 states have call predecessors, (5536), 5536 states have call successors, (5536) [2023-12-19 13:07:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35696 states to 35696 states and 56055 transitions. [2023-12-19 13:07:24,415 INFO L78 Accepts]: Start accepts. Automaton has 35696 states and 56055 transitions. Word has length 349 [2023-12-19 13:07:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:07:24,416 INFO L495 AbstractCegarLoop]: Abstraction has 35696 states and 56055 transitions. [2023-12-19 13:07:24,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35696 states and 56055 transitions. [2023-12-19 13:07:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:07:24,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:07:24,435 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:24,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 13:07:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:07:24,644 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:07:24,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:07:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -691292835, now seen corresponding path program 1 times [2023-12-19 13:07:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:07:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143118724] [2023-12-19 13:07:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:07:24,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:07:24,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876121299] [2023-12-19 13:07:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:24,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:07:24,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:07:24,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:07:24,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 13:07:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:07:24,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 13:07:24,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:07:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:07:25,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:07:25,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:07:25,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143118724] [2023-12-19 13:07:25,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:07:25,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876121299] [2023-12-19 13:07:25,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876121299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:07:25,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:07:25,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:07:25,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992844724] [2023-12-19 13:07:25,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:07:25,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:07:25,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:07:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:07:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:07:25,007 INFO L87 Difference]: Start difference. First operand 35696 states and 56055 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:07:32,891 INFO L93 Difference]: Finished difference Result 101289 states and 159130 transitions. [2023-12-19 13:07:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:07:32,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:07:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:07:33,041 INFO L225 Difference]: With dead ends: 101289 [2023-12-19 13:07:33,041 INFO L226 Difference]: Without dead ends: 65594 [2023-12-19 13:07:33,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:07:33,092 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 198 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 13:07:33,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1404 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 13:07:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65594 states. [2023-12-19 13:07:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65594 to 65362. [2023-12-19 13:07:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65362 states, 55273 states have (on average 1.507263944421327) internal successors, (83311), 55457 states have internal predecessors, (83311), 9568 states have call successors, (9568), 520 states have call predecessors, (9568), 520 states have return successors, (9568), 9384 states have call predecessors, (9568), 9568 states have call successors, (9568) [2023-12-19 13:07:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65362 states to 65362 states and 102447 transitions. [2023-12-19 13:07:42,651 INFO L78 Accepts]: Start accepts. Automaton has 65362 states and 102447 transitions. Word has length 349 [2023-12-19 13:07:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:07:42,652 INFO L495 AbstractCegarLoop]: Abstraction has 65362 states and 102447 transitions. [2023-12-19 13:07:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:07:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 65362 states and 102447 transitions. [2023-12-19 13:07:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:07:42,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:07:42,680 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:42,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 13:07:42,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 13:07:42,881 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:07:42,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:07:42,881 INFO L85 PathProgramCache]: Analyzing trace with hash 202193503, now seen corresponding path program 1 times [2023-12-19 13:07:42,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:07:42,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746897387] [2023-12-19 13:07:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:07:43,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:07:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629042612] [2023-12-19 13:07:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:07:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:07:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:07:43,072 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:07:43,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 13:07:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:07:43,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 13:07:43,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:07:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:07:43,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:07:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:07:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746897387] [2023-12-19 13:07:43,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:07:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629042612] [2023-12-19 13:07:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629042612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:07:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:07:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 13:07:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726939028] [2023-12-19 13:07:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:07:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 13:07:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:07:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 13:07:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 13:07:43,432 INFO L87 Difference]: Start difference. First operand 65362 states and 102447 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:08:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:03,168 INFO L93 Difference]: Finished difference Result 251171 states and 393792 transitions. [2023-12-19 13:08:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:08:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 349 [2023-12-19 13:08:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:03,696 INFO L225 Difference]: With dead ends: 251171 [2023-12-19 13:08:03,696 INFO L226 Difference]: Without dead ends: 185810 [2023-12-19 13:08:03,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:08:03,782 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 564 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:03,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1007 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:08:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185810 states. [2023-12-19 13:08:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185810 to 77518. [2023-12-19 13:08:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77518 states, 67149 states have (on average 1.5160761887742185) internal successors, (101803), 67341 states have internal predecessors, (101803), 9832 states have call successors, (9832), 536 states have call predecessors, (9832), 536 states have return successors, (9832), 9640 states have call predecessors, (9832), 9832 states have call successors, (9832) [2023-12-19 13:08:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77518 states to 77518 states and 121467 transitions. [2023-12-19 13:08:13,046 INFO L78 Accepts]: Start accepts. Automaton has 77518 states and 121467 transitions. Word has length 349 [2023-12-19 13:08:13,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:13,047 INFO L495 AbstractCegarLoop]: Abstraction has 77518 states and 121467 transitions. [2023-12-19 13:08:13,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:08:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 77518 states and 121467 transitions. [2023-12-19 13:08:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 13:08:13,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:13,072 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:13,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:13,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 13:08:13,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:13,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 186674785, now seen corresponding path program 1 times [2023-12-19 13:08:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:13,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265098306] [2023-12-19 13:08:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:13,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876740459] [2023-12-19 13:08:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:13,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:13,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:13,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 13:08:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:13,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 13:08:13,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2493 proven. 54 refuted. 0 times theorem prover too weak. 2757 trivial. 0 not checked. [2023-12-19 13:08:13,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:08:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 99 proven. 54 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:08:13,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:08:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265098306] [2023-12-19 13:08:13,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:08:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876740459] [2023-12-19 13:08:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876740459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:08:13,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:08:13,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 13:08:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65497522] [2023-12-19 13:08:13,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:08:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 13:08:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:08:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 13:08:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 13:08:13,994 INFO L87 Difference]: Start difference. First operand 77518 states and 121467 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-19 13:08:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:08:21,825 INFO L93 Difference]: Finished difference Result 154411 states and 241097 transitions. [2023-12-19 13:08:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 13:08:21,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 349 [2023-12-19 13:08:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:08:21,946 INFO L225 Difference]: With dead ends: 154411 [2023-12-19 13:08:21,947 INFO L226 Difference]: Without dead ends: 76894 [2023-12-19 13:08:22,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 690 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 13:08:22,003 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 191 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:08:22,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 580 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 13:08:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76894 states. [2023-12-19 13:08:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76894 to 74530. [2023-12-19 13:08:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74530 states, 64081 states have (on average 1.497557778436666) internal successors, (95965), 64273 states have internal predecessors, (95965), 9832 states have call successors, (9832), 616 states have call predecessors, (9832), 616 states have return successors, (9832), 9640 states have call predecessors, (9832), 9832 states have call successors, (9832) [2023-12-19 13:08:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74530 states to 74530 states and 115629 transitions. [2023-12-19 13:08:30,249 INFO L78 Accepts]: Start accepts. Automaton has 74530 states and 115629 transitions. Word has length 349 [2023-12-19 13:08:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:08:30,250 INFO L495 AbstractCegarLoop]: Abstraction has 74530 states and 115629 transitions. [2023-12-19 13:08:30,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-12-19 13:08:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 74530 states and 115629 transitions. [2023-12-19 13:08:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-19 13:08:30,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:08:30,274 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:30,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 13:08:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 13:08:30,482 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:08:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:08:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -72892625, now seen corresponding path program 1 times [2023-12-19 13:08:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:08:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571028693] [2023-12-19 13:08:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:08:30,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:08:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796237652] [2023-12-19 13:08:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:08:30,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:08:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:08:30,526 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:08:30,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 13:08:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:08:30,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 13:08:30,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:08:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2661 proven. 66 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2023-12-19 13:08:48,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 13:09:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 87 proven. 66 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2023-12-19 13:09:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:09:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571028693] [2023-12-19 13:09:02,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:09:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796237652] [2023-12-19 13:09:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796237652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 13:09:02,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 13:09:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-12-19 13:09:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531547283] [2023-12-19 13:09:02,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 13:09:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 13:09:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:09:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 13:09:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-19 13:09:02,287 INFO L87 Difference]: Start difference. First operand 74530 states and 115629 transitions. Second operand has 20 states, 20 states have (on average 7.9) internal successors, (158), 20 states have internal predecessors, (158), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-19 13:09:11,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:09:24,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:09:25,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:09:49,026 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:09:59,454 WARN L293 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 13:10:15,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:18,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:24,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:28,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:30,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:32,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:40,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:10:47,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:10:50,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:10:52,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 13:10:57,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:11:06,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:11:07,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:11:16,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2023-12-19 13:11:21,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:11:38,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-19 13:12:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:12:45,157 INFO L93 Difference]: Finished difference Result 312795 states and 478249 transitions. [2023-12-19 13:12:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-19 13:12:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.9) internal successors, (158), 20 states have internal predecessors, (158), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 350 [2023-12-19 13:12:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:12:45,855 INFO L225 Difference]: With dead ends: 312795 [2023-12-19 13:12:45,855 INFO L226 Difference]: Without dead ends: 238245 [2023-12-19 13:12:45,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2023-12-19 13:12:45,966 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1827 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 873 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 4862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.2s IncrementalHoareTripleChecker+Time [2023-12-19 13:12:45,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3724 Invalid, 4862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 3981 Invalid, 8 Unknown, 0 Unchecked, 133.2s Time] [2023-12-19 13:12:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238245 states. [2023-12-19 13:12:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238245 to 93103. [2023-12-19 13:12:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93103 states, 80754 states have (on average 1.4949847685563564) internal successors, (120726), 80974 states have internal predecessors, (120726), 11328 states have call successors, (11328), 1020 states have call predecessors, (11328), 1020 states have return successors, (11328), 11108 states have call predecessors, (11328), 11328 states have call successors, (11328) [2023-12-19 13:13:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93103 states to 93103 states and 143382 transitions. [2023-12-19 13:13:00,159 INFO L78 Accepts]: Start accepts. Automaton has 93103 states and 143382 transitions. Word has length 350 [2023-12-19 13:13:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:13:00,160 INFO L495 AbstractCegarLoop]: Abstraction has 93103 states and 143382 transitions. [2023-12-19 13:13:00,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.9) internal successors, (158), 20 states have internal predecessors, (158), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2023-12-19 13:13:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 93103 states and 143382 transitions. [2023-12-19 13:13:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-19 13:13:00,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:13:00,201 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:00,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 13:13:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 13:13:00,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:13:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:13:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1608334978, now seen corresponding path program 1 times [2023-12-19 13:13:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:13:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604077165] [2023-12-19 13:13:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:13:00,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:13:00,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190716073] [2023-12-19 13:13:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:00,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:13:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:13:00,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:13:00,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 13:13:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:13:00,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 13:13:00,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:13:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2023-12-19 13:13:00,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 13:13:00,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 13:13:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604077165] [2023-12-19 13:13:00,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 13:13:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190716073] [2023-12-19 13:13:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190716073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 13:13:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 13:13:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 13:13:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693462887] [2023-12-19 13:13:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 13:13:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 13:13:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 13:13:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 13:13:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 13:13:00,831 INFO L87 Difference]: Start difference. First operand 93103 states and 143382 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:13:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 13:13:22,862 INFO L93 Difference]: Finished difference Result 262725 states and 404210 transitions. [2023-12-19 13:13:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 13:13:22,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 350 [2023-12-19 13:13:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 13:13:23,169 INFO L225 Difference]: With dead ends: 262725 [2023-12-19 13:13:23,169 INFO L226 Difference]: Without dead ends: 167115 [2023-12-19 13:13:23,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 13:13:23,440 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 385 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 13:13:23,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1043 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 13:13:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167115 states. [2023-12-19 13:13:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167115 to 149345. [2023-12-19 13:13:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149345 states, 125532 states have (on average 1.4660644297868273) internal successors, (184038), 125948 states have internal predecessors, (184038), 21828 states have call successors, (21828), 1984 states have call predecessors, (21828), 1984 states have return successors, (21828), 21412 states have call predecessors, (21828), 21828 states have call successors, (21828) [2023-12-19 13:13:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149345 states to 149345 states and 227694 transitions. [2023-12-19 13:13:46,559 INFO L78 Accepts]: Start accepts. Automaton has 149345 states and 227694 transitions. Word has length 350 [2023-12-19 13:13:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 13:13:46,559 INFO L495 AbstractCegarLoop]: Abstraction has 149345 states and 227694 transitions. [2023-12-19 13:13:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2023-12-19 13:13:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 149345 states and 227694 transitions. [2023-12-19 13:13:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-19 13:13:46,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 13:13:46,592 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:46,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 13:13:46,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:13:46,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 13:13:46,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 13:13:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2027100796, now seen corresponding path program 1 times [2023-12-19 13:13:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 13:13:46,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423012010] [2023-12-19 13:13:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 13:13:46,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 13:13:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131861437] [2023-12-19 13:13:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 13:13:46,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:13:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 13:13:46,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 13:13:46,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 13:13:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 13:13:47,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 13:13:47,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 13:13:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2661 proven. 66 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2023-12-19 13:13:58,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 13:19:23,272 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:19:23,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 13:19:23,301 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:19:23,301 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:19:23,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 13:19:23,473 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 351 with TraceHistMax 52,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-3-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-19 13:19:23,477 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:19:23,479 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:19:23,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:19:23 BoogieIcfgContainer [2023-12-19 13:19:23,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:19:23,481 INFO L158 Benchmark]: Toolchain (without parser) took 820555.10ms. Allocated memory was 210.8MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 157.9MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 6.1GB. Max. memory is 8.0GB. [2023-12-19 13:19:23,481 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 166.7MB. Free memory was 114.6MB in the beginning and 114.5MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:19:23,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.78ms. Allocated memory is still 210.8MB. Free memory was 157.9MB in the beginning and 133.2MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 13:19:23,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.71ms. Allocated memory is still 210.8MB. Free memory was 133.2MB in the beginning and 124.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 13:19:23,482 INFO L158 Benchmark]: Boogie Preprocessor took 166.41ms. Allocated memory is still 210.8MB. Free memory was 124.3MB in the beginning and 173.3MB in the end (delta: -49.0MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. [2023-12-19 13:19:23,482 INFO L158 Benchmark]: RCFGBuilder took 802.52ms. Allocated memory is still 210.8MB. Free memory was 173.3MB in the beginning and 113.0MB in the end (delta: 60.3MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-12-19 13:19:23,482 INFO L158 Benchmark]: TraceAbstraction took 819061.55ms. Allocated memory was 210.8MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 112.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 6.1GB. Max. memory is 8.0GB. [2023-12-19 13:19:23,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 166.7MB. Free memory was 114.6MB in the beginning and 114.5MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 428.78ms. Allocated memory is still 210.8MB. Free memory was 157.9MB in the beginning and 133.2MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 89.71ms. Allocated memory is still 210.8MB. Free memory was 133.2MB in the beginning and 124.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 166.41ms. Allocated memory is still 210.8MB. Free memory was 124.3MB in the beginning and 173.3MB in the end (delta: -49.0MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. * RCFGBuilder took 802.52ms. Allocated memory is still 210.8MB. Free memory was 173.3MB in the beginning and 113.0MB in the end (delta: 60.3MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * TraceAbstraction took 819061.55ms. Allocated memory was 210.8MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 112.0MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 6.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 351 with TraceHistMax 52,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-32-3-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 819.0s, OverallIterations: 20, TraceHistogramMax: 52, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 333.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 20965 SdHoareTripleChecker+Valid, 152.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20644 mSDsluCounter, 33076 SdHoareTripleChecker+Invalid, 148.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25396 mSDsCounter, 8533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20105 IncrementalHoareTripleChecker+Invalid, 28646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8533 mSolverCounterUnsat, 7680 mSDtfsCounter, 20105 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9098 GetRequests, 8634 SyntacticMatches, 4 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22607 ImplicationChecksByTransitivity, 73.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149345occurred in iteration=19, InterpolantAutomatonStates: 437, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 76.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 320907 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 61.0s InterpolantComputationTime, 6618 NumberOfCodeBlocks, 6618 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8687 ConstructedInterpolants, 20 QuantifiedInterpolants, 42066 SizeOfPredicates, 86 NumberOfNonLiveVariables, 15864 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 25 InterpolantComputations, 14 PerfectInterpolantSequences, 132006/132600 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown