/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-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:07:56,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:07:56,143 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 21:07:56,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:07:56,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:07:56,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:07:56,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:07:56,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:07:56,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:07:56,174 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:07:56,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:07:56,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:07:56,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:07:56,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:07:56,176 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:07:56,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:07:56,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:07:56,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:07:56,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:07:56,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:07:56,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:07:56,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:07:56,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:07:56,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:07:56,179 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:07:56,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:07:56,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:07:56,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:07:56,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:07:56,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:07:56,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:07:56,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:07:56,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:07:56,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:07:56,181 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:07:56,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:07:56,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:07:56,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:07:56,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:07:56,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:07:56,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:07:56,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:07:56,408 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:07:56,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2023-12-15 21:07:57,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:07:57,547 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:07:57,547 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2023-12-15 21:07:57,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc1ca853a/4c5ab15eafdb43ea86fbbf8de0901142/FLAG7207f60cf [2023-12-15 21:07:57,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc1ca853a/4c5ab15eafdb43ea86fbbf8de0901142 [2023-12-15 21:07:57,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:07:57,569 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:07:57,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:07:57,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:07:57,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:07:57,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:07:57" (1/1) ... [2023-12-15 21:07:57,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8f1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:57, skipping insertion in model container [2023-12-15 21:07:57,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:07:57" (1/1) ... [2023-12-15 21:07:57,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:07:57,715 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-19.i[916,929] [2023-12-15 21:07:57,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:07:57,874 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:07:57,882 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-19.i[916,929] [2023-12-15 21:07:57,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:07:58,007 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:07:58,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58 WrapperNode [2023-12-15 21:07:58,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:07:58,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:07:58,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:07:58,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:07:58,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,076 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 377 [2023-12-15 21:07:58,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:07:58,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:07:58,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:07:58,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:07:58,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,134 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 21:07:58,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:07:58,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:07:58,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:07:58,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:07:58,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (1/1) ... [2023-12-15 21:07:58,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:07:58,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:07:58,246 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 21:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:07:58,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:07:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:07:58,264 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 21:07:58,360 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:07:58,362 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:07:58,825 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:07:58,857 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:07:58,857 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:07:58,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:07:58 BoogieIcfgContainer [2023-12-15 21:07:58,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:07:58,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:07:58,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:07:58,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:07:58,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:07:57" (1/3) ... [2023-12-15 21:07:58,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191ebf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:07:58, skipping insertion in model container [2023-12-15 21:07:58,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:07:58" (2/3) ... [2023-12-15 21:07:58,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191ebf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:07:58, skipping insertion in model container [2023-12-15 21:07:58,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:07:58" (3/3) ... [2023-12-15 21:07:58,863 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-19.i [2023-12-15 21:07:58,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:07:58,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:07:58,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:07:58,922 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;@360b017d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:07:58,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:07:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 100 states have (on average 1.56) internal successors, (156), 101 states have internal predecessors, (156), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 21:07:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-15 21:07:58,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:07:58,945 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:58,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:07:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:07:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1936487276, now seen corresponding path program 1 times [2023-12-15 21:07:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:07:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316957088] [2023-12-15 21:07:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:07:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:59,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:07:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316957088] [2023-12-15 21:07:59,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:07:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012860634] [2023-12-15 21:07:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:59,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:07:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:07:59,174 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 21:07:59,208 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 21:07:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:07:59,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:07:59,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:07:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2023-12-15 21:07:59,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:07:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012860634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:07:59,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:07:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:07:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762224119] [2023-12-15 21:07:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:07:59,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:07:59,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:07:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:07:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:07:59,517 INFO L87 Difference]: Start difference. First operand has 148 states, 100 states have (on average 1.56) internal successors, (156), 101 states have internal predecessors, (156), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-15 21:07:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:07:59,568 INFO L93 Difference]: Finished difference Result 292 states and 533 transitions. [2023-12-15 21:07:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:07:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 289 [2023-12-15 21:07:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:07:59,576 INFO L225 Difference]: With dead ends: 292 [2023-12-15 21:07:59,576 INFO L226 Difference]: Without dead ends: 145 [2023-12-15 21:07:59,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 288 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 21:07:59,582 INFO L413 NwaCegarLoop]: 235 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, 235 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 21:07:59,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:07:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-15 21:07:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-15 21:07:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 98 states have (on average 1.510204081632653) internal successors, (148), 98 states have internal predecessors, (148), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 21:07:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 238 transitions. [2023-12-15 21:07:59,621 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 238 transitions. Word has length 289 [2023-12-15 21:07:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:07:59,621 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 238 transitions. [2023-12-15 21:07:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-15 21:07:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 238 transitions. [2023-12-15 21:07:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-15 21:07:59,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:07:59,626 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:59,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:07:59,831 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 21:07:59,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:07:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:07:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1947210470, now seen corresponding path program 1 times [2023-12-15 21:07:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:07:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819513166] [2023-12-15 21:07:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:07:59,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:07:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759519509] [2023-12-15 21:07:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:07:59,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:07:59,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:07:59,910 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 21:07:59,911 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 21:08:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:00,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:08:00,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-15 21:08:00,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:08:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819513166] [2023-12-15 21:08:00,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759519509] [2023-12-15 21:08:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759519509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:08:00,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:08:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:08:00,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998647453] [2023-12-15 21:08:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:08:00,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:08:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:08:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:08:00,227 INFO L87 Difference]: Start difference. First operand 145 states and 238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:00,345 INFO L93 Difference]: Finished difference Result 354 states and 580 transitions. [2023-12-15 21:08:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:08:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 289 [2023-12-15 21:08:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:00,350 INFO L225 Difference]: With dead ends: 354 [2023-12-15 21:08:00,351 INFO L226 Difference]: Without dead ends: 210 [2023-12-15 21:08:00,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 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 21:08:00,352 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 96 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:00,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 506 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:08:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-15 21:08:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-12-15 21:08:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 145 states have (on average 1.5172413793103448) internal successors, (220), 146 states have internal predecessors, (220), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:08:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 338 transitions. [2023-12-15 21:08:00,386 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 338 transitions. Word has length 289 [2023-12-15 21:08:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:00,387 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 338 transitions. [2023-12-15 21:08:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 338 transitions. [2023-12-15 21:08:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:00,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:00,401 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:00,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:08:00,606 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 21:08:00,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:00,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2064631899, now seen corresponding path program 1 times [2023-12-15 21:08:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253438406] [2023-12-15 21:08:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:00,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:00,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797916374] [2023-12-15 21:08:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:00,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:00,709 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 21:08:00,748 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 21:08:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:00,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:08:00,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-15 21:08:00,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:08:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253438406] [2023-12-15 21:08:00,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797916374] [2023-12-15 21:08:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797916374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:08:00,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:08:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:08:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350471343] [2023-12-15 21:08:00,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:08:00,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:08:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:08:00,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:08:00,990 INFO L87 Difference]: Start difference. First operand 207 states and 338 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:01,057 INFO L93 Difference]: Finished difference Result 616 states and 1006 transitions. [2023-12-15 21:08:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:08:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 290 [2023-12-15 21:08:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:01,063 INFO L225 Difference]: With dead ends: 616 [2023-12-15 21:08:01,063 INFO L226 Difference]: Without dead ends: 410 [2023-12-15 21:08:01,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 288 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 21:08:01,065 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 220 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:01,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 588 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:08:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-15 21:08:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 219. [2023-12-15 21:08:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 158 states have internal predecessors, (239), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:08:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 357 transitions. [2023-12-15 21:08:01,097 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 357 transitions. Word has length 290 [2023-12-15 21:08:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:01,098 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 357 transitions. [2023-12-15 21:08:01,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 357 transitions. [2023-12-15 21:08:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:01,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:01,100 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:01,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:08:01,301 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 21:08:01,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:01,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash 70487193, now seen corresponding path program 1 times [2023-12-15 21:08:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:01,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738470967] [2023-12-15 21:08:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:01,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:01,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:01,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988282708] [2023-12-15 21:08:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:01,389 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 21:08:01,400 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 21:08:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:01,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:08:01,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-15 21:08:01,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:08:01,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:01,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738470967] [2023-12-15 21:08:01,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:01,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988282708] [2023-12-15 21:08:01,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988282708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:08:01,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:08:01,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:08:01,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917871535] [2023-12-15 21:08:01,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:08:01,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:08:01,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:01,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:08:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:08:01,607 INFO L87 Difference]: Start difference. First operand 219 states and 357 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:01,686 INFO L93 Difference]: Finished difference Result 502 states and 818 transitions. [2023-12-15 21:08:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:08:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 290 [2023-12-15 21:08:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:01,689 INFO L225 Difference]: With dead ends: 502 [2023-12-15 21:08:01,689 INFO L226 Difference]: Without dead ends: 284 [2023-12-15 21:08:01,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 288 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 21:08:01,696 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 100 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:01,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 473 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:08:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-15 21:08:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 243. [2023-12-15 21:08:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 181 states have (on average 1.5524861878453038) internal successors, (281), 182 states have internal predecessors, (281), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:08:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 399 transitions. [2023-12-15 21:08:01,720 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 399 transitions. Word has length 290 [2023-12-15 21:08:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:01,721 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 399 transitions. [2023-12-15 21:08:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-15 21:08:01,721 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 399 transitions. [2023-12-15 21:08:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:01,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:01,723 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:01,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:08:01,928 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 21:08:01,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:01,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash 127745495, now seen corresponding path program 1 times [2023-12-15 21:08:01,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:01,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84948271] [2023-12-15 21:08:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:01,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416613962] [2023-12-15 21:08:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:01,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:01,974 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 21:08:02,001 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 21:08:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:02,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:08:02,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2023-12-15 21:08:02,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:08:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-15 21:08:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84948271] [2023-12-15 21:08:02,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416613962] [2023-12-15 21:08:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416613962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:08:02,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:08:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:08:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575263521] [2023-12-15 21:08:02,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:08:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:08:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:08:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:08:02,586 INFO L87 Difference]: Start difference. First operand 243 states and 399 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-15 21:08:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:02,846 INFO L93 Difference]: Finished difference Result 495 states and 799 transitions. [2023-12-15 21:08:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:08:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 290 [2023-12-15 21:08:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:02,848 INFO L225 Difference]: With dead ends: 495 [2023-12-15 21:08:02,848 INFO L226 Difference]: Without dead ends: 253 [2023-12-15 21:08:02,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 572 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:08:02,850 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 199 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:02,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 458 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:08:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-15 21:08:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2023-12-15 21:08:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 156 states have (on average 1.4871794871794872) internal successors, (232), 157 states have internal predecessors, (232), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:08:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 350 transitions. [2023-12-15 21:08:02,860 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 350 transitions. Word has length 290 [2023-12-15 21:08:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:02,861 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 350 transitions. [2023-12-15 21:08:02,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-15 21:08:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 350 transitions. [2023-12-15 21:08:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:02,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:02,863 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:02,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:08:03,068 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 21:08:03,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:03,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1806035783, now seen corresponding path program 1 times [2023-12-15 21:08:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412303816] [2023-12-15 21:08:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:03,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:03,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706322498] [2023-12-15 21:08:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:03,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:03,112 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 21:08:03,116 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 21:08:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:03,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:08:03,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1518 proven. 99 refuted. 0 times theorem prover too weak. 2343 trivial. 0 not checked. [2023-12-15 21:08:03,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:08:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 33 proven. 99 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-15 21:08:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412303816] [2023-12-15 21:08:03,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:03,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706322498] [2023-12-15 21:08:03,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706322498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:08:03,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:08:03,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 21:08:03,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484980481] [2023-12-15 21:08:03,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:08:03,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:08:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:08:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:08:03,831 INFO L87 Difference]: Start difference. First operand 219 states and 350 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-15 21:08:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:04,323 INFO L93 Difference]: Finished difference Result 687 states and 1076 transitions. [2023-12-15 21:08:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:08:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 290 [2023-12-15 21:08:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:04,326 INFO L225 Difference]: With dead ends: 687 [2023-12-15 21:08:04,326 INFO L226 Difference]: Without dead ends: 469 [2023-12-15 21:08:04,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 571 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:08:04,328 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 509 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:04,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 795 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:08:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-15 21:08:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 236. [2023-12-15 21:08:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 171 states have (on average 1.4678362573099415) internal successors, (251), 172 states have internal predecessors, (251), 59 states have call successors, (59), 5 states have call predecessors, (59), 5 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:08:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 369 transitions. [2023-12-15 21:08:04,371 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 369 transitions. Word has length 290 [2023-12-15 21:08:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:04,372 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 369 transitions. [2023-12-15 21:08:04,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-15 21:08:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 369 transitions. [2023-12-15 21:08:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:04,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:04,374 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:04,382 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 21:08:04,574 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 21:08:04,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:04,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1164479239, now seen corresponding path program 1 times [2023-12-15 21:08:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176054151] [2023-12-15 21:08:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:04,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67318760] [2023-12-15 21:08:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:04,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:04,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:04,612 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 21:08:04,615 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 21:08:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:04,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:08:04,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1682 proven. 93 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2023-12-15 21:08:05,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:08:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 39 proven. 93 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-15 21:08:06,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176054151] [2023-12-15 21:08:06,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67318760] [2023-12-15 21:08:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67318760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:08:06,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:08:06,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2023-12-15 21:08:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953431521] [2023-12-15 21:08:06,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:08:06,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 21:08:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 21:08:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:08:06,204 INFO L87 Difference]: Start difference. First operand 236 states and 369 transitions. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2023-12-15 21:08:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:09,075 INFO L93 Difference]: Finished difference Result 3300 states and 5175 transitions. [2023-12-15 21:08:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-15 21:08:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) Word has length 290 [2023-12-15 21:08:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:09,085 INFO L225 Difference]: With dead ends: 3300 [2023-12-15 21:08:09,085 INFO L226 Difference]: Without dead ends: 3064 [2023-12-15 21:08:09,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 572 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1544, Invalid=4936, Unknown=0, NotChecked=0, Total=6480 [2023-12-15 21:08:09,088 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 3157 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3191 SdHoareTripleChecker+Valid, 4280 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:09,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3191 Valid, 4280 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 21:08:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-12-15 21:08:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 366. [2023-12-15 21:08:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 255 states have (on average 1.380392156862745) internal successors, (352), 256 states have internal predecessors, (352), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 21:08:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 552 transitions. [2023-12-15 21:08:09,128 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 552 transitions. Word has length 290 [2023-12-15 21:08:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:09,128 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 552 transitions. [2023-12-15 21:08:09,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2023-12-15 21:08:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 552 transitions. [2023-12-15 21:08:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:09,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:09,130 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:09,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 21:08:09,335 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 21:08:09,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:09,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1141846985, now seen corresponding path program 1 times [2023-12-15 21:08:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127908961] [2023-12-15 21:08:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:09,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820296872] [2023-12-15 21:08:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:09,375 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 21:08:09,397 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 21:08:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:09,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:08:09,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1037 proven. 348 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2023-12-15 21:08:10,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:08:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 24 proven. 237 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2023-12-15 21:08:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:11,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127908961] [2023-12-15 21:08:11,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:11,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820296872] [2023-12-15 21:08:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820296872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:08:11,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:08:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-15 21:08:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581969641] [2023-12-15 21:08:11,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:08:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-15 21:08:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-15 21:08:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:08:11,054 INFO L87 Difference]: Start difference. First operand 366 states and 552 transitions. Second operand has 20 states, 19 states have (on average 6.368421052631579) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2023-12-15 21:08:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:08:12,266 INFO L93 Difference]: Finished difference Result 888 states and 1345 transitions. [2023-12-15 21:08:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-15 21:08:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.368421052631579) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) Word has length 290 [2023-12-15 21:08:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:08:12,269 INFO L225 Difference]: With dead ends: 888 [2023-12-15 21:08:12,269 INFO L226 Difference]: Without dead ends: 620 [2023-12-15 21:08:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 21:08:12,270 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 871 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:08:12,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1523 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:08:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-15 21:08:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 374. [2023-12-15 21:08:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 261 states have (on average 1.367816091954023) internal successors, (357), 262 states have internal predecessors, (357), 100 states have call successors, (100), 12 states have call predecessors, (100), 12 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-15 21:08:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 557 transitions. [2023-12-15 21:08:12,322 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 557 transitions. Word has length 290 [2023-12-15 21:08:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:08:12,322 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 557 transitions. [2023-12-15 21:08:12,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.368421052631579) internal successors, (121), 20 states have internal predecessors, (121), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2023-12-15 21:08:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 557 transitions. [2023-12-15 21:08:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 21:08:12,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:08:12,324 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:12,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:08:12,531 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 21:08:12,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:08:12,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:08:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash 909137013, now seen corresponding path program 1 times [2023-12-15 21:08:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:08:12,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691478722] [2023-12-15 21:08:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:12,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:08:12,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:08:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843039593] [2023-12-15 21:08:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:08:12,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:08:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:08:12,560 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 21:08:12,586 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 21:08:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:08:12,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-15 21:08:12,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:08:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2494 proven. 318 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2023-12-15 21:08:14,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:08:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 159 proven. 228 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2023-12-15 21:08:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:08:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691478722] [2023-12-15 21:08:21,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:08:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843039593] [2023-12-15 21:08:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843039593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:08:21,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:08:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-12-15 21:08:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725198813] [2023-12-15 21:08:21,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:08:21,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-15 21:08:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:08:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-15 21:08:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:08:21,395 INFO L87 Difference]: Start difference. First operand 374 states and 557 transitions. Second operand has 38 states, 37 states have (on average 4.297297297297297) internal successors, (159), 36 states have internal predecessors, (159), 10 states have call successors, (90), 6 states have call predecessors, (90), 12 states have return successors, (90), 10 states have call predecessors, (90), 10 states have call successors, (90) [2023-12-15 21:08:40,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 21:08:52,811 WARN L293 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 104 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-15 21:08:59,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-15 21:09:06,580 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 21:09:06,580 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:09:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-15 21:09:07,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5335 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=3477, Invalid=12525, Unknown=0, NotChecked=0, Total=16002 [2023-12-15 21:09:07,011 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 3158 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 584 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3158 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:07,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3158 Valid, 1103 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1795 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-12-15 21:09:07,012 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:09:07,021 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 21:09:07,217 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 21:09:07,218 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (374states) and FLOYD_HOARE automaton (currently 91 states, 38 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-5-3-4-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2023-12-15 21:09:07,230 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:09:07,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:09:07,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:09:07 BoogieIcfgContainer [2023-12-15 21:09:07,236 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:09:07,236 INFO L158 Benchmark]: Toolchain (without parser) took 69667.14ms. Allocated memory was 226.5MB in the beginning and 585.1MB in the end (delta: 358.6MB). Free memory was 175.6MB in the beginning and 449.0MB in the end (delta: -273.4MB). Peak memory consumption was 86.8MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,236 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 188.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:09:07,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.60ms. Allocated memory is still 226.5MB. Free memory was 175.1MB in the beginning and 150.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.64ms. Allocated memory is still 226.5MB. Free memory was 150.9MB in the beginning and 139.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,237 INFO L158 Benchmark]: Boogie Preprocessor took 127.69ms. Allocated memory is still 226.5MB. Free memory was 139.9MB in the beginning and 187.2MB in the end (delta: -47.2MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,237 INFO L158 Benchmark]: RCFGBuilder took 651.40ms. Allocated memory is still 226.5MB. Free memory was 187.2MB in the beginning and 130.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,237 INFO L158 Benchmark]: TraceAbstraction took 68377.27ms. Allocated memory was 226.5MB in the beginning and 585.1MB in the end (delta: 358.6MB). Free memory was 130.0MB in the beginning and 449.0MB in the end (delta: -319.0MB). Peak memory consumption was 40.1MB. Max. memory is 8.0GB. [2023-12-15 21:09:07,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 188.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 437.60ms. Allocated memory is still 226.5MB. Free memory was 175.1MB in the beginning and 150.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.64ms. Allocated memory is still 226.5MB. Free memory was 150.9MB in the beginning and 139.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 127.69ms. Allocated memory is still 226.5MB. Free memory was 139.9MB in the beginning and 187.2MB in the end (delta: -47.2MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. * RCFGBuilder took 651.40ms. Allocated memory is still 226.5MB. Free memory was 187.2MB in the beginning and 130.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 68377.27ms. Allocated memory was 226.5MB in the beginning and 585.1MB in the end (delta: 358.6MB). Free memory was 130.0MB in the beginning and 449.0MB in the end (delta: -319.0MB). Peak memory consumption was 40.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 (374states) and FLOYD_HOARE automaton (currently 91 states, 38 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-5-3-4-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.3s, OverallIterations: 9, TraceHistogramMax: 45, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 50.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 8379 SdHoareTripleChecker+Valid, 14.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8310 mSDsluCounter, 9961 SdHoareTripleChecker+Invalid, 13.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7605 mSDsCounter, 1688 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5990 IncrementalHoareTripleChecker+Invalid, 7679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1688 mSolverCounterUnsat, 2356 mSDtfsCounter, 5990 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4274 GetRequests, 3995 SyntacticMatches, 5 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8336 ImplicationChecksByTransitivity, 37.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=8, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 3446 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 2897 NumberOfCodeBlocks, 2897 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4044 ConstructedInterpolants, 0 QuantifiedInterpolants, 24940 SizeOfPredicates, 44 NumberOfNonLiveVariables, 6343 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 53745/55440 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