/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/nla-digbench/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:48:12,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:48:12,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:48:12,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:48:12,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:48:12,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:48:12,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:48:12,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:48:12,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:48:12,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:48:12,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:48:12,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:48:12,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:48:12,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:48:12,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:48:12,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:48:12,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:48:12,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:48:12,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:48:12,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:48:12,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:48:12,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:48:12,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:48:12,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:48:12,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:48:12,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:48:12,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:48:12,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:48:12,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:48:12,239 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:48:12,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:48:12,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:48:12,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:48:12,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:48:12,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:48:12,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:48:12,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:48:12,242 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:48:12,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:48:12,243 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:48:12,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:48:12,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:48:12,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:48:12,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:48:12,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:48:12,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:48:12,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:48:12,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:48:12,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:48:12,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:48:12,246 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:48:12,247 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:48:12,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:48:12,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:48:12,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:48:12,491 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:48:12,493 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:48:12,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/lcm1.c [2023-04-02 01:48:13,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:48:13,780 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:48:13,780 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/lcm1.c [2023-04-02 01:48:13,786 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e77bfdb/04012fc9e00b4c79958a66542bd7916b/FLAGe5b2cb0a1 [2023-04-02 01:48:13,800 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e77bfdb/04012fc9e00b4c79958a66542bd7916b [2023-04-02 01:48:13,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:48:13,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:48:13,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:48:13,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:48:13,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:48:13,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:48:13" (1/1) ... [2023-04-02 01:48:13,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d74d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:13, skipping insertion in model container [2023-04-02 01:48:13,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:48:13" (1/1) ... [2023-04-02 01:48:13,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:48:13,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:48:13,941 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/lcm1.c[552,565] [2023-04-02 01:48:13,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:48:13,973 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:48:13,989 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/lcm1.c[552,565] [2023-04-02 01:48:14,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:48:14,009 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:48:14,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14 WrapperNode [2023-04-02 01:48:14,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:48:14,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:48:14,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:48:14,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:48:14,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:48:14,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:48:14,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:48:14,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:48:14,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (1/1) ... [2023-04-02 01:48:14,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:48:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:14,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:48:14,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:48:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:48:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:48:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:48:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:48:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:48:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:48:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:48:14,150 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:48:14,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:48:14,302 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:48:14,308 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:48:14,308 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 01:48:14,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:48:14 BoogieIcfgContainer [2023-04-02 01:48:14,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:48:14,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:48:14,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:48:14,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:48:14,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:48:13" (1/3) ... [2023-04-02 01:48:14,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6917bf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:48:14, skipping insertion in model container [2023-04-02 01:48:14,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:48:14" (2/3) ... [2023-04-02 01:48:14,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6917bf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:48:14, skipping insertion in model container [2023-04-02 01:48:14,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:48:14" (3/3) ... [2023-04-02 01:48:14,317 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1.c [2023-04-02 01:48:14,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:48:14,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:48:14,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:48:14,432 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=LoopsAndPotentialCycles, 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;@247baba1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:48:14,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:48:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:48:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 01:48:14,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:48:14,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:48:14,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:48:14,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:48:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1751682979, now seen corresponding path program 1 times [2023-04-02 01:48:14,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:48:14,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167574791] [2023-04-02 01:48:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:48:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:48:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:48:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167574791] [2023-04-02 01:48:14,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 01:48:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501926350] [2023-04-02 01:48:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:14,646 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) [2023-04-02 01:48:14,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:48:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:48:14,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 01:48:14,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:48:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 01:48:14,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:48:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501926350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:48:14,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:48:14,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 01:48:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832753451] [2023-04-02 01:48:14,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:48:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 01:48:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:48:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 01:48:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 01:48:14,847 INFO L87 Difference]: Start difference. First operand has 37 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 01:48:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:48:14,876 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-04-02 01:48:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 01:48:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2023-04-02 01:48:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:48:14,883 INFO L225 Difference]: With dead ends: 67 [2023-04-02 01:48:14,884 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 01:48:14,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 01:48:14,893 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:48:14,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:48:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 01:48:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 01:48:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:48:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-04-02 01:48:14,922 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 32 [2023-04-02 01:48:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:48:14,923 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-04-02 01:48:14,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 01:48:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-04-02 01:48:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 01:48:14,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:48:14,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:48:14,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:48:15,132 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 [2023-04-02 01:48:15,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:48:15,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:48:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash -442223298, now seen corresponding path program 1 times [2023-04-02 01:48:15,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:48:15,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699988902] [2023-04-02 01:48:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:48:15,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:48:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241108604] [2023-04-02 01:48:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:15,160 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) [2023-04-02 01:48:15,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:48:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:48:15,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 01:48:15,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:48:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 01:48:15,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:48:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:48:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:48:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699988902] [2023-04-02 01:48:15,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:48:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241108604] [2023-04-02 01:48:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241108604] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 01:48:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:48:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-02 01:48:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878409375] [2023-04-02 01:48:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:48:15,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:48:15,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:48:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:48:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 01:48:15,518 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 01:48:17,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-04-02 01:48:19,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-04-02 01:48:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:48:19,674 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-04-02 01:48:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:48:19,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2023-04-02 01:48:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:48:19,675 INFO L225 Difference]: With dead ends: 49 [2023-04-02 01:48:19,676 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 01:48:19,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:48:19,677 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:48:19,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 01:48:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 01:48:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-04-02 01:48:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:48:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2023-04-02 01:48:19,692 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 32 [2023-04-02 01:48:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:48:19,692 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2023-04-02 01:48:19,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 01:48:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2023-04-02 01:48:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 01:48:19,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:48:19,694 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:48:19,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 01:48:19,899 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 [2023-04-02 01:48:19,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:48:19,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:48:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1300584321, now seen corresponding path program 1 times [2023-04-02 01:48:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:48:19,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930096821] [2023-04-02 01:48:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:19,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:48:19,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:48:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485718793] [2023-04-02 01:48:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:19,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:19,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:19,940 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) [2023-04-02 01:48:19,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process