/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-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:11:26,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:11:26,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:11:26,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:11:26,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:11:26,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:11:26,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:11:26,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:11:26,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:11:26,228 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:11:26,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:11:26,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:11:26,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:11:26,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:11:26,230 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:11:26,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:11:26,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:11:26,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:11:26,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:11:26,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:11:26,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:11:26,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:11:26,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:11:26,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:11:26,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:11:26,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:11:26,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:11:26,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:26,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:11:26,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:11:26,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:11:26,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:11:26,237 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:11:26,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:11:26,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:11:26,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:11:26,404 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:11:26,405 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:11:26,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-65.i [2023-12-15 21:11:27,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:11:27,680 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:11:27,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-65.i [2023-12-15 21:11:27,688 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e6827df/a109f9de9bb34907bfa3ce199d2b790a/FLAG9c8093a93 [2023-12-15 21:11:27,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e6827df/a109f9de9bb34907bfa3ce199d2b790a [2023-12-15 21:11:27,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:11:27,700 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:11:27,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:27,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:11:27,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:11:27,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:27" (1/1) ... [2023-12-15 21:11:27,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325fbc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:27, skipping insertion in model container [2023-12-15 21:11:27,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:27" (1/1) ... [2023-12-15 21:11:27,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:11:27,858 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-65.i[916,929] [2023-12-15 21:11:27,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:27,992 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:11:28,001 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-65.i[916,929] [2023-12-15 21:11:28,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:28,069 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:11:28,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28 WrapperNode [2023-12-15 21:11:28,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:28,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:28,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:11:28,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:11:28,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,174 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 393 [2023-12-15 21:11:28,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:28,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:11:28,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:11:28,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:11:28,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,244 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]. [2023-12-15 21:11:28,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:11:28,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:11:28,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:11:28,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:11:28,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (1/1) ... [2023-12-15 21:11:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:28,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:28,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:11:28,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:11:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:11:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:11:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:11:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:11:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:11:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:11:28,468 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:11:28,470 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:11:29,141 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:11:29,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:11:29,174 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:11:29,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:29 BoogieIcfgContainer [2023-12-15 21:11:29,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:11:29,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:11:29,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:11:29,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:11:29,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:11:27" (1/3) ... [2023-12-15 21:11:29,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8339a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:29, skipping insertion in model container [2023-12-15 21:11:29,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:28" (2/3) ... [2023-12-15 21:11:29,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8339a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:29, skipping insertion in model container [2023-12-15 21:11:29,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:29" (3/3) ... [2023-12-15 21:11:29,181 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-65.i [2023-12-15 21:11:29,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:11:29,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:11:29,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:11:29,244 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;@d2d7cbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:11:29,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:11:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 21:11:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-15 21:11:29,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:29,278 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:29,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:29,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1957533417, now seen corresponding path program 1 times [2023-12-15 21:11:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:29,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584754198] [2023-12-15 21:11:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584754198] [2023-12-15 21:11:29,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:11:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788723745] [2023-12-15 21:11:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:29,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:29,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:11:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:29,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:11:29,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-12-15 21:11:29,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:29,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788723745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:11:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905507088] [2023-12-15 21:11:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:11:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:29,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:11:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:11:29,916 INFO L87 Difference]: Start difference. First operand has 154 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-15 21:11:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:29,979 INFO L93 Difference]: Finished difference Result 305 states and 551 transitions. [2023-12-15 21:11:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:11:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 331 [2023-12-15 21:11:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:29,987 INFO L225 Difference]: With dead ends: 305 [2023-12-15 21:11:29,987 INFO L226 Difference]: Without dead ends: 152 [2023-12-15 21:11:29,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:11:29,993 INFO L413 NwaCegarLoop]: 243 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, 243 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 [2023-12-15 21:11:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-15 21:11:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-15 21:11:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.4545454545454546) internal successors, (144), 99 states have internal predecessors, (144), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 21:11:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 246 transitions. [2023-12-15 21:11:30,053 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 246 transitions. Word has length 331 [2023-12-15 21:11:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:30,054 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 246 transitions. [2023-12-15 21:11:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-15 21:11:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 246 transitions. [2023-12-15 21:11:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-15 21:11:30,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:30,060 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:30,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:11:30,266 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 [2023-12-15 21:11:30,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1831709453, now seen corresponding path program 1 times [2023-12-15 21:11:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668668466] [2023-12-15 21:11:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:30,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847734299] [2023-12-15 21:11:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:30,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:30,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:30,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:30,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:11:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:30,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:30,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:30,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668668466] [2023-12-15 21:11:30,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847734299] [2023-12-15 21:11:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847734299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:30,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:30,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860129817] [2023-12-15 21:11:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:30,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:30,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:30,675 INFO L87 Difference]: Start difference. First operand 152 states and 246 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:30,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:30,779 INFO L93 Difference]: Finished difference Result 456 states and 738 transitions. [2023-12-15 21:11:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:30,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 331 [2023-12-15 21:11:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:30,785 INFO L225 Difference]: With dead ends: 456 [2023-12-15 21:11:30,785 INFO L226 Difference]: Without dead ends: 305 [2023-12-15 21:11:30,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:30,791 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 242 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:30,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1079 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-15 21:11:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 167. [2023-12-15 21:11:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 21:11:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 269 transitions. [2023-12-15 21:11:30,816 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 269 transitions. Word has length 331 [2023-12-15 21:11:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:30,817 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 269 transitions. [2023-12-15 21:11:30,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 269 transitions. [2023-12-15 21:11:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:30,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:30,820 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:30,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:31,021 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 [2023-12-15 21:11:31,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:31,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 145191608, now seen corresponding path program 1 times [2023-12-15 21:11:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:31,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661901112] [2023-12-15 21:11:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:31,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251154993] [2023-12-15 21:11:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:31,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:31,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:31,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:11:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:31,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:31,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:31,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661901112] [2023-12-15 21:11:31,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251154993] [2023-12-15 21:11:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251154993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:31,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410037988] [2023-12-15 21:11:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:31,333 INFO L87 Difference]: Start difference. First operand 167 states and 269 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:31,398 INFO L93 Difference]: Finished difference Result 469 states and 756 transitions. [2023-12-15 21:11:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 332 [2023-12-15 21:11:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:31,402 INFO L225 Difference]: With dead ends: 469 [2023-12-15 21:11:31,402 INFO L226 Difference]: Without dead ends: 303 [2023-12-15 21:11:31,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:31,405 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 223 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:31,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 525 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-15 21:11:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 177. [2023-12-15 21:11:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 124 states have (on average 1.467741935483871) internal successors, (182), 124 states have internal predecessors, (182), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 21:11:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 284 transitions. [2023-12-15 21:11:31,425 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 284 transitions. Word has length 332 [2023-12-15 21:11:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:31,426 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 284 transitions. [2023-12-15 21:11:31,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 284 transitions. [2023-12-15 21:11:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:31,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:31,429 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:31,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:31,651 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 [2023-12-15 21:11:31,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:31,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1040762068, now seen corresponding path program 1 times [2023-12-15 21:11:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:31,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078003507] [2023-12-15 21:11:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:31,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355036323] [2023-12-15 21:11:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:31,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:31,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:31,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:31,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:11:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:31,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:31,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2594 proven. 78 refuted. 0 times theorem prover too weak. 2428 trivial. 0 not checked. [2023-12-15 21:11:32,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 72 proven. 78 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-12-15 21:11:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078003507] [2023-12-15 21:11:32,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355036323] [2023-12-15 21:11:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355036323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:32,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:32,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 21:11:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107609966] [2023-12-15 21:11:32,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:32,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:11:32,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:11:32,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:32,365 INFO L87 Difference]: Start difference. First operand 177 states and 284 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 21:11:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:32,616 INFO L93 Difference]: Finished difference Result 359 states and 572 transitions. [2023-12-15 21:11:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:11:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 332 [2023-12-15 21:11:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:32,618 INFO L225 Difference]: With dead ends: 359 [2023-12-15 21:11:32,618 INFO L226 Difference]: Without dead ends: 183 [2023-12-15 21:11:32,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:11:32,619 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 128 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:32,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 448 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-15 21:11:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2023-12-15 21:11:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 127 states have (on average 1.4330708661417322) internal successors, (182), 127 states have internal predecessors, (182), 51 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-15 21:11:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 284 transitions. [2023-12-15 21:11:32,629 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 284 transitions. Word has length 332 [2023-12-15 21:11:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:32,629 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 284 transitions. [2023-12-15 21:11:32,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 21:11:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 284 transitions. [2023-12-15 21:11:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:32,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:32,632 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:32,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:32,838 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 [2023-12-15 21:11:32,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:32,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1117764648, now seen corresponding path program 1 times [2023-12-15 21:11:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:32,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386813765] [2023-12-15 21:11:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:32,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482392459] [2023-12-15 21:11:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:32,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:32,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:11:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:33,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:11:33,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1895 proven. 234 refuted. 0 times theorem prover too weak. 2971 trivial. 0 not checked. [2023-12-15 21:11:34,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 60 proven. 237 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2023-12-15 21:11:34,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:34,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386813765] [2023-12-15 21:11:34,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:34,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482392459] [2023-12-15 21:11:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482392459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:34,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:34,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-15 21:11:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611643301] [2023-12-15 21:11:34,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 21:11:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 21:11:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:11:34,869 INFO L87 Difference]: Start difference. First operand 181 states and 284 transitions. Second operand has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 6 states have call successors, (102), 4 states have call predecessors, (102), 8 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) [2023-12-15 21:11:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:36,327 INFO L93 Difference]: Finished difference Result 605 states and 937 transitions. [2023-12-15 21:11:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 21:11:36,328 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 6 states have call successors, (102), 4 states have call predecessors, (102), 8 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) Word has length 332 [2023-12-15 21:11:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:36,330 INFO L225 Difference]: With dead ends: 605 [2023-12-15 21:11:36,330 INFO L226 Difference]: Without dead ends: 425 [2023-12-15 21:11:36,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=1211, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 21:11:36,331 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1044 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:36,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1459 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 21:11:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-15 21:11:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 371. [2023-12-15 21:11:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 261 states have (on average 1.417624521072797) internal successors, (370), 261 states have internal predecessors, (370), 102 states have call successors, (102), 7 states have call predecessors, (102), 7 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 21:11:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 574 transitions. [2023-12-15 21:11:36,360 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 574 transitions. Word has length 332 [2023-12-15 21:11:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:36,361 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 574 transitions. [2023-12-15 21:11:36,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 6 states have call successors, (102), 4 states have call predecessors, (102), 8 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) [2023-12-15 21:11:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 574 transitions. [2023-12-15 21:11:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:36,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:36,363 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:36,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:11:36,568 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 [2023-12-15 21:11:36,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -416700070, now seen corresponding path program 1 times [2023-12-15 21:11:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318360821] [2023-12-15 21:11:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:36,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069866805] [2023-12-15 21:11:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:36,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:36,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:36,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:11:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:36,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:11:36,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:37,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318360821] [2023-12-15 21:11:37,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069866805] [2023-12-15 21:11:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069866805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:37,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556198312] [2023-12-15 21:11:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:37,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:37,450 INFO L87 Difference]: Start difference. First operand 371 states and 574 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:37,654 INFO L93 Difference]: Finished difference Result 953 states and 1468 transitions. [2023-12-15 21:11:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 332 [2023-12-15 21:11:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:37,657 INFO L225 Difference]: With dead ends: 953 [2023-12-15 21:11:37,657 INFO L226 Difference]: Without dead ends: 583 [2023-12-15 21:11:37,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:37,659 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 164 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:37,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 705 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-15 21:11:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 571. [2023-12-15 21:11:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 405 states have (on average 1.4148148148148147) internal successors, (573), 405 states have internal predecessors, (573), 153 states have call successors, (153), 12 states have call predecessors, (153), 12 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2023-12-15 21:11:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 879 transitions. [2023-12-15 21:11:37,696 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 879 transitions. Word has length 332 [2023-12-15 21:11:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:37,697 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 879 transitions. [2023-12-15 21:11:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 879 transitions. [2023-12-15 21:11:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:37,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:37,698 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:37,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:37,905 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 [2023-12-15 21:11:37,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:37,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash 6946652, now seen corresponding path program 1 times [2023-12-15 21:11:37,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:37,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416934398] [2023-12-15 21:11:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:37,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538355167] [2023-12-15 21:11:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:37,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:37,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:37,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:37,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:11:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:38,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:11:38,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:38,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416934398] [2023-12-15 21:11:38,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538355167] [2023-12-15 21:11:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538355167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178036978] [2023-12-15 21:11:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:38,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:38,920 INFO L87 Difference]: Start difference. First operand 571 states and 879 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:39,359 INFO L93 Difference]: Finished difference Result 1638 states and 2513 transitions. [2023-12-15 21:11:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:11:39,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 332 [2023-12-15 21:11:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:39,365 INFO L225 Difference]: With dead ends: 1638 [2023-12-15 21:11:39,365 INFO L226 Difference]: Without dead ends: 1225 [2023-12-15 21:11:39,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:39,367 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 362 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 761 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-15 21:11:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1066. [2023-12-15 21:11:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 789 states have (on average 1.4220532319391634) internal successors, (1122), 789 states have internal predecessors, (1122), 255 states have call successors, (255), 21 states have call predecessors, (255), 21 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2023-12-15 21:11:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1632 transitions. [2023-12-15 21:11:39,429 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1632 transitions. Word has length 332 [2023-12-15 21:11:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:39,429 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1632 transitions. [2023-12-15 21:11:39,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1632 transitions. [2023-12-15 21:11:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 21:11:39,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:39,431 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:39,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:39,638 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 [2023-12-15 21:11:39,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:39,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash 429648478, now seen corresponding path program 1 times [2023-12-15 21:11:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361623605] [2023-12-15 21:11:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:39,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112736894] [2023-12-15 21:11:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:39,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:39,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:39,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:11:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:40,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 21:11:40,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2379 proven. 96 refuted. 0 times theorem prover too weak. 2625 trivial. 0 not checked. [2023-12-15 21:11:41,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 99 proven. 51 refuted. 0 times theorem prover too weak. 4950 trivial. 0 not checked. [2023-12-15 21:11:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361623605] [2023-12-15 21:11:42,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112736894] [2023-12-15 21:11:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112736894] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:42,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2023-12-15 21:11:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811904993] [2023-12-15 21:11:42,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:42,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 21:11:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 21:11:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:11:42,271 INFO L87 Difference]: Start difference. First operand 1066 states and 1632 transitions. Second operand has 21 states, 21 states have (on average 7.857142857142857) internal successors, (165), 20 states have internal predecessors, (165), 5 states have call successors, (102), 4 states have call predecessors, (102), 6 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-12-15 21:11:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:45,247 INFO L93 Difference]: Finished difference Result 4870 states and 7319 transitions. [2023-12-15 21:11:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-15 21:11:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.857142857142857) internal successors, (165), 20 states have internal predecessors, (165), 5 states have call successors, (102), 4 states have call predecessors, (102), 6 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) Word has length 332 [2023-12-15 21:11:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:45,261 INFO L225 Difference]: With dead ends: 4870 [2023-12-15 21:11:45,261 INFO L226 Difference]: Without dead ends: 4078 [2023-12-15 21:11:45,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=890, Invalid=2650, Unknown=0, NotChecked=0, Total=3540 [2023-12-15 21:11:45,265 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1953 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 2058 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 21:11:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2023-12-15 21:11:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3584. [2023-12-15 21:11:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3584 states, 2756 states have (on average 1.4129172714078375) internal successors, (3894), 2768 states have internal predecessors, (3894), 739 states have call successors, (739), 88 states have call predecessors, (739), 88 states have return successors, (739), 727 states have call predecessors, (739), 739 states have call successors, (739) [2023-12-15 21:11:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 5372 transitions. [2023-12-15 21:11:45,509 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 5372 transitions. Word has length 332 [2023-12-15 21:11:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:45,510 INFO L495 AbstractCegarLoop]: Abstraction has 3584 states and 5372 transitions. [2023-12-15 21:11:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.857142857142857) internal successors, (165), 20 states have internal predecessors, (165), 5 states have call successors, (102), 4 states have call predecessors, (102), 6 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-12-15 21:11:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 5372 transitions. [2023-12-15 21:11:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-15 21:11:45,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:45,512 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:45,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:45,719 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 [2023-12-15 21:11:45,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:45,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1044448977, now seen corresponding path program 1 times [2023-12-15 21:11:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456795770] [2023-12-15 21:11:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:45,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903422767] [2023-12-15 21:11:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:45,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:45,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:45,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:45,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:11:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:45,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:11:46,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:46,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456795770] [2023-12-15 21:11:46,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903422767] [2023-12-15 21:11:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903422767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:46,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226412702] [2023-12-15 21:11:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:46,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:11:46,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:46,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:11:46,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:11:46,761 INFO L87 Difference]: Start difference. First operand 3584 states and 5372 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:47,575 INFO L93 Difference]: Finished difference Result 7415 states and 11105 transitions. [2023-12-15 21:11:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:11:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 333 [2023-12-15 21:11:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:47,610 INFO L225 Difference]: With dead ends: 7415 [2023-12-15 21:11:47,611 INFO L226 Difference]: Without dead ends: 6796 [2023-12-15 21:11:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:47,615 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 366 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:47,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 758 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:11:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2023-12-15 21:11:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 5926. [2023-12-15 21:11:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 4609 states have (on average 1.4154914298112389) internal successors, (6524), 4625 states have internal predecessors, (6524), 1177 states have call successors, (1177), 139 states have call predecessors, (1177), 139 states have return successors, (1177), 1161 states have call predecessors, (1177), 1177 states have call successors, (1177) [2023-12-15 21:11:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 8878 transitions. [2023-12-15 21:11:48,058 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 8878 transitions. Word has length 333 [2023-12-15 21:11:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:48,059 INFO L495 AbstractCegarLoop]: Abstraction has 5926 states and 8878 transitions. [2023-12-15 21:11:48,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 8878 transitions. [2023-12-15 21:11:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-15 21:11:48,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:48,062 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:48,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:48,269 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 [2023-12-15 21:11:48,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:48,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1467150803, now seen corresponding path program 1 times [2023-12-15 21:11:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:48,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141723482] [2023-12-15 21:11:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:48,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490115072] [2023-12-15 21:11:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:48,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:48,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:11:48,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:11:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:48,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-15 21:11:48,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3056 proven. 303 refuted. 0 times theorem prover too weak. 1741 trivial. 0 not checked. [2023-12-15 21:11:49,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141723482] [2023-12-15 21:11:50,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490115072] [2023-12-15 21:11:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490115072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:11:50,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:11:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-15 21:11:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566596775] [2023-12-15 21:11:50,691 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 21:11:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 21:11:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2023-12-15 21:11:50,692 INFO L87 Difference]: Start difference. First operand 5926 states and 8878 transitions. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 21 states have internal predecessors, (108), 7 states have call successors, (51), 7 states have call predecessors, (51), 10 states have return successors, (51), 7 states have call predecessors, (51), 7 states have call successors, (51) [2023-12-15 21:11:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:52,245 INFO L93 Difference]: Finished difference Result 8710 states and 12667 transitions. [2023-12-15 21:11:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 21:11:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 21 states have internal predecessors, (108), 7 states have call successors, (51), 7 states have call predecessors, (51), 10 states have return successors, (51), 7 states have call predecessors, (51), 7 states have call successors, (51) Word has length 333 [2023-12-15 21:11:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:52,269 INFO L225 Difference]: With dead ends: 8710 [2023-12-15 21:11:52,270 INFO L226 Difference]: Without dead ends: 7550 [2023-12-15 21:11:52,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 21:11:52,276 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 419 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:52,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1558 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:11:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7550 states. [2023-12-15 21:11:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7550 to 6145. [2023-12-15 21:11:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4966 states have (on average 1.427708417237213) internal successors, (7090), 4974 states have internal predecessors, (7090), 971 states have call successors, (971), 207 states have call predecessors, (971), 207 states have return successors, (971), 963 states have call predecessors, (971), 971 states have call successors, (971) [2023-12-15 21:11:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 9032 transitions. [2023-12-15 21:11:52,722 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 9032 transitions. Word has length 333 [2023-12-15 21:11:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:52,722 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 9032 transitions. [2023-12-15 21:11:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 21 states have internal predecessors, (108), 7 states have call successors, (51), 7 states have call predecessors, (51), 10 states have return successors, (51), 7 states have call predecessors, (51), 7 states have call successors, (51) [2023-12-15 21:11:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 9032 transitions. [2023-12-15 21:11:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-15 21:11:52,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:52,725 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:52,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:52,932 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 [2023-12-15 21:11:52,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:52,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 569757525, now seen corresponding path program 1 times [2023-12-15 21:11:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637373756] [2023-12-15 21:11:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:52,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101951484] [2023-12-15 21:11:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:52,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:52,975 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) [2023-12-15 21:11:52,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:11:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:53,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:11:53,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:53,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:53,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637373756] [2023-12-15 21:11:53,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101951484] [2023-12-15 21:11:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101951484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:53,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:53,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43597432] [2023-12-15 21:11:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:53,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:11:53,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:11:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:53,875 INFO L87 Difference]: Start difference. First operand 6145 states and 9032 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:54,485 INFO L93 Difference]: Finished difference Result 7729 states and 11358 transitions. [2023-12-15 21:11:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:11:54,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 333 [2023-12-15 21:11:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:54,510 INFO L225 Difference]: With dead ends: 7729 [2023-12-15 21:11:54,510 INFO L226 Difference]: Without dead ends: 6087 [2023-12-15 21:11:54,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:54,515 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 227 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:54,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 825 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2023-12-15 21:11:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 5995. [2023-12-15 21:11:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5995 states, 4816 states have (on average 1.4235880398671097) internal successors, (6856), 4824 states have internal predecessors, (6856), 971 states have call successors, (971), 207 states have call predecessors, (971), 207 states have return successors, (971), 963 states have call predecessors, (971), 971 states have call successors, (971) [2023-12-15 21:11:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5995 states to 5995 states and 8798 transitions. [2023-12-15 21:11:54,916 INFO L78 Accepts]: Start accepts. Automaton has 5995 states and 8798 transitions. Word has length 333 [2023-12-15 21:11:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:54,917 INFO L495 AbstractCegarLoop]: Abstraction has 5995 states and 8798 transitions. [2023-12-15 21:11:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5995 states and 8798 transitions. [2023-12-15 21:11:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-15 21:11:54,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:54,920 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:54,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:55,126 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 [2023-12-15 21:11:55,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:55,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2007318916, now seen corresponding path program 1 times [2023-12-15 21:11:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599209063] [2023-12-15 21:11:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:55,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493799783] [2023-12-15 21:11:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:55,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:55,167 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) [2023-12-15 21:11:55,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:11:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:55,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:11:55,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1464 proven. 126 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2023-12-15 21:11:56,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-12-15 21:11:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599209063] [2023-12-15 21:11:56,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493799783] [2023-12-15 21:11:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493799783] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:11:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:11:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-15 21:11:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882838646] [2023-12-15 21:11:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:11:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:11:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:11:56,392 INFO L87 Difference]: Start difference. First operand 5995 states and 8798 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:56,788 INFO L93 Difference]: Finished difference Result 12260 states and 17848 transitions. [2023-12-15 21:11:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:56,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 333 [2023-12-15 21:11:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:56,803 INFO L225 Difference]: With dead ends: 12260 [2023-12-15 21:11:56,803 INFO L226 Difference]: Without dead ends: 7007 [2023-12-15 21:11:56,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:11:56,813 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 62 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:56,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 943 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2023-12-15 21:11:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6227. [2023-12-15 21:11:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6227 states, 5048 states have (on average 1.417987321711569) internal successors, (7158), 5056 states have internal predecessors, (7158), 971 states have call successors, (971), 207 states have call predecessors, (971), 207 states have return successors, (971), 963 states have call predecessors, (971), 971 states have call successors, (971) [2023-12-15 21:11:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 9100 transitions. [2023-12-15 21:11:57,186 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 9100 transitions. Word has length 333 [2023-12-15 21:11:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:57,187 INFO L495 AbstractCegarLoop]: Abstraction has 6227 states and 9100 transitions. [2023-12-15 21:11:57,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-12-15 21:11:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 9100 transitions. [2023-12-15 21:11:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-15 21:11:57,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:57,194 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:11:57,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:57,400 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 [2023-12-15 21:11:57,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:57,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 482206343, now seen corresponding path program 1 times [2023-12-15 21:11:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:57,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806019237] [2023-12-15 21:11:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:57,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:57,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:57,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137325285] [2023-12-15 21:11:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:57,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:57,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:57,440 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) [2023-12-15 21:11:57,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:11:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:58,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:11:58,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 1410 proven. 126 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-12-15 21:11:59,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:12:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:12:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806019237] [2023-12-15 21:12:00,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:12:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137325285] [2023-12-15 21:12:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137325285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:12:00,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:12:00,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-15 21:12:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822770108] [2023-12-15 21:12:00,396 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:12:00,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:12:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:12:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:12:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:12:00,397 INFO L87 Difference]: Start difference. First operand 6227 states and 9100 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-15 21:12:03,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 21:12:21,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-15 21:12:33,623 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:12:33,623 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:12:34,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-15 21:12:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:12:34,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=96, Invalid=238, Unknown=8, NotChecked=0, Total=342 [2023-12-15 21:12:34,593 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:34,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 8 Unknown, 0 Unchecked, 12.4s Time] [2023-12-15 21:12:34,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:12:34,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:12:34,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 21:12:34,794 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 [2023-12-15 21:12:34,795 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (6227states) and FLOYD_HOARE automaton (currently 7 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (12 states constructed, input type IntersectNwa). [2023-12-15 21:12:34,800 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:12:34,802 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:12:34,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:12:34 BoogieIcfgContainer [2023-12-15 21:12:34,807 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:12:34,807 INFO L158 Benchmark]: Toolchain (without parser) took 67106.99ms. Allocated memory was 185.6MB in the beginning and 853.5MB in the end (delta: 667.9MB). Free memory was 138.7MB in the beginning and 449.9MB in the end (delta: -311.3MB). Peak memory consumption was 357.7MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,808 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:12:34,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.70ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 111.0MB in the end (delta: 27.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.26ms. Allocated memory is still 185.6MB. Free memory was 111.0MB in the beginning and 149.1MB in the end (delta: -38.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,809 INFO L158 Benchmark]: Boogie Preprocessor took 147.53ms. Allocated memory is still 185.6MB. Free memory was 148.6MB in the beginning and 104.6MB in the end (delta: 44.0MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,810 INFO L158 Benchmark]: RCFGBuilder took 851.99ms. Allocated memory was 185.6MB in the beginning and 278.9MB in the end (delta: 93.3MB). Free memory was 104.6MB in the beginning and 226.3MB in the end (delta: -121.7MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,810 INFO L158 Benchmark]: TraceAbstraction took 65630.37ms. Allocated memory was 278.9MB in the beginning and 853.5MB in the end (delta: 574.6MB). Free memory was 225.8MB in the beginning and 449.9MB in the end (delta: -224.2MB). Peak memory consumption was 349.9MB. Max. memory is 8.0GB. [2023-12-15 21:12:34,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.70ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 111.0MB in the end (delta: 27.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 104.26ms. Allocated memory is still 185.6MB. Free memory was 111.0MB in the beginning and 149.1MB in the end (delta: -38.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.53ms. Allocated memory is still 185.6MB. Free memory was 148.6MB in the beginning and 104.6MB in the end (delta: 44.0MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * RCFGBuilder took 851.99ms. Allocated memory was 185.6MB in the beginning and 278.9MB in the end (delta: 93.3MB). Free memory was 104.6MB in the beginning and 226.3MB in the end (delta: -121.7MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. * TraceAbstraction took 65630.37ms. Allocated memory was 278.9MB in the beginning and 853.5MB in the end (delta: 574.6MB). Free memory was 225.8MB in the beginning and 449.9MB in the end (delta: -224.2MB). Peak memory consumption was 349.9MB. 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 constructing difference of abstraction (6227states) and FLOYD_HOARE automaton (currently 7 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (12 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 154 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.6s, OverallIterations: 13, TraceHistogramMax: 51, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 43.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 5246 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5210 mSDsluCounter, 11374 SdHoareTripleChecker+Invalid, 16.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8426 mSDsCounter, 1422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6535 IncrementalHoareTripleChecker+Invalid, 7965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1422 mSolverCounterUnsat, 2948 mSDtfsCounter, 6535 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5838 GetRequests, 5638 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6227occurred in iteration=12, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 4132 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 4651 NumberOfCodeBlocks, 4651 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5632 ConstructedInterpolants, 33 QuantifiedInterpolants, 35388 SizeOfPredicates, 97 NumberOfNonLiveVariables, 10587 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 85371/86700 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