/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:35:05,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:35:05,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:35:05,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:35:05,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:35:05,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:35:05,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:35:05,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:35:05,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:35:05,234 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:35:05,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:35:05,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:35:05,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:35:05,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:35:05,235 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:35:05,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:35:05,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:35:05,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:35:05,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:35:05,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:35:05,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:35:05,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:35:05,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:35:05,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:35:05,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:35:05,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:35:05,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:35:05,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:35:05,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:35:05,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:35:05,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:35:05,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:35:05,408 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:35:05,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-12-20 20:35:06,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:35:06,780 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:35:06,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-12-20 20:35:06,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8165d11/412f57bb2c14419eb80818994794ff5f/FLAG2459eef63 [2023-12-20 20:35:06,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8165d11/412f57bb2c14419eb80818994794ff5f [2023-12-20 20:35:06,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:35:06,808 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:35:06,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:35:06,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:35:06,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:35:06,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:35:06" (1/1) ... [2023-12-20 20:35:06,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b8ba1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:06, skipping insertion in model container [2023-12-20 20:35:06,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:35:06" (1/1) ... [2023-12-20 20:35:06,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:35:06,945 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_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932] [2023-12-20 20:35:07,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:35:07,033 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:35:07,041 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_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932] [2023-12-20 20:35:07,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:35:07,102 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:35:07,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07 WrapperNode [2023-12-20 20:35:07,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:35:07,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:35:07,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:35:07,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:35:07,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,176 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197 [2023-12-20 20:35:07,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:35:07,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:35:07,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:35:07,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:35:07,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,232 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]. [2023-12-20 20:35:07,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:35:07,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:35:07,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:35:07,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:35:07,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (1/1) ... [2023-12-20 20:35:07,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:35:07,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:35:07,338 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) [2023-12-20 20:35:07,344 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 [2023-12-20 20:35:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:35:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:35:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:35:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:35:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:35:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:35:07,450 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:35:07,453 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:35:07,942 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:35:07,981 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:35:07,982 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:35:07,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:35:07 BoogieIcfgContainer [2023-12-20 20:35:07,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:35:07,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:35:07,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:35:07,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:35:07,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:35:06" (1/3) ... [2023-12-20 20:35:07,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b621f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:35:07, skipping insertion in model container [2023-12-20 20:35:07,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:35:07" (2/3) ... [2023-12-20 20:35:07,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b621f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:35:07, skipping insertion in model container [2023-12-20 20:35:07,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:35:07" (3/3) ... [2023-12-20 20:35:07,990 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i [2023-12-20 20:35:08,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:35:08,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:35:08,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:35:08,053 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;@693471bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:35:08,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:35:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 48 states have (on average 1.4375) internal successors, (69), 49 states have internal predecessors, (69), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 20:35:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 20:35:08,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:35:08,071 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:35:08,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:35:08,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:35:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2139832920, now seen corresponding path program 1 times [2023-12-20 20:35:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:35:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738736235] [2023-12-20 20:35:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:35:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:35:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:35:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738736235] [2023-12-20 20:35:08,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:35:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095791090] [2023-12-20 20:35:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:08,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:35:08,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:35:08,269 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) [2023-12-20 20:35:08,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:35:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:35:08,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:35:08,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:35:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-12-20 20:35:08,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:35:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095791090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:35:08,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:35:08,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:35:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741993945] [2023-12-20 20:35:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:35:08,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:35:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:35:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:35:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:35:08,551 INFO L87 Difference]: Start difference. First operand has 81 states, 48 states have (on average 1.4375) internal successors, (69), 49 states have internal predecessors, (69), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-20 20:35:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:35:08,580 INFO L93 Difference]: Finished difference Result 158 states and 284 transitions. [2023-12-20 20:35:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:35:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 188 [2023-12-20 20:35:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:35:08,588 INFO L225 Difference]: With dead ends: 158 [2023-12-20 20:35:08,588 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 20:35:08,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:35:08,593 INFO L413 NwaCegarLoop]: 118 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, 118 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 [2023-12-20 20:35:08,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:35:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 20:35:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-20 20:35:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-20 20:35:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 121 transitions. [2023-12-20 20:35:08,634 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 121 transitions. Word has length 188 [2023-12-20 20:35:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:35:08,634 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 121 transitions. [2023-12-20 20:35:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-20 20:35:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 121 transitions. [2023-12-20 20:35:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 20:35:08,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:35:08,638 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:35:08,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 20:35:08,843 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 [2023-12-20 20:35:08,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:35:08,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:35:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1402038496, now seen corresponding path program 1 times [2023-12-20 20:35:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:35:08,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4758884] [2023-12-20 20:35:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:35:08,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:35:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101537183] [2023-12-20 20:35:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:08,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:35:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:35:08,922 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) [2023-12-20 20:35:08,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:35:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:35:09,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 20:35:09,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:35:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-20 20:35:09,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:35:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:35:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4758884] [2023-12-20 20:35:09,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:35:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101537183] [2023-12-20 20:35:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101537183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:35:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:35:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 20:35:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191949638] [2023-12-20 20:35:09,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:35:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:35:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:35:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:35:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:35:09,254 INFO L87 Difference]: Start difference. First operand 78 states and 121 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 20:35:09,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:35:09,476 INFO L93 Difference]: Finished difference Result 249 states and 375 transitions. [2023-12-20 20:35:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:35:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 188 [2023-12-20 20:35:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:35:09,480 INFO L225 Difference]: With dead ends: 249 [2023-12-20 20:35:09,480 INFO L226 Difference]: Without dead ends: 172 [2023-12-20 20:35:09,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 20:35:09,482 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 236 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:35:09,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 446 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 20:35:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-20 20:35:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 123. [2023-12-20 20:35:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 87 states have internal predecessors, (121), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 20:35:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 189 transitions. [2023-12-20 20:35:09,530 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 189 transitions. Word has length 188 [2023-12-20 20:35:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:35:09,532 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 189 transitions. [2023-12-20 20:35:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-20 20:35:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 189 transitions. [2023-12-20 20:35:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 20:35:09,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:35:09,554 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:35:09,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:35:09,759 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 [2023-12-20 20:35:09,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:35:09,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:35:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -186309406, now seen corresponding path program 1 times [2023-12-20 20:35:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:35:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209799173] [2023-12-20 20:35:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:35:09,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:35:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006125638] [2023-12-20 20:35:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:35:09,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:35:09,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:35:09,826 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) [2023-12-20 20:35:09,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:35:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:35:10,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-20 20:35:10,093 INFO L285 TraceCheckSpWp]: Computing forward predicates...