/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/dijkstra-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:46:23,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:46:23,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:46:23,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:46:23,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:46:23,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:46:23,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:46:23,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:46:23,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:46:23,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:46:23,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:46:23,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:46:23,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:46:23,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:46:23,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:46:23,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:46:23,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:46:23,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:46:23,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:46:23,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:46:23,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:46:23,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:46:23,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:46:23,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:46:23,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:46:23,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:46:23,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:46:23,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:46:23,829 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 01:46:23,864 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:46:23,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:46:23,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:46:23,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:46:23,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:46:23,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:46:23,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:46:23,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:46:23,867 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:46:23,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:46:23,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:46:23,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:46:23,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:46:23,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:46:23,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:46:23,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:46:23,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:46:23,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:46:23,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:46:23,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:46:23,871 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:46:23,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:46:23,871 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:46:23,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:46:24,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:46:24,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:46:24,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:46:24,147 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:46:24,147 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:46:24,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/dijkstra-u.c [2023-04-02 01:46:25,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:46:25,474 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:46:25,474 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/dijkstra-u.c [2023-04-02 01:46:25,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2642b710b/e06b897589684232b1727ef75f25fc36/FLAGfe1ce0b68 [2023-04-02 01:46:25,499 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2642b710b/e06b897589684232b1727ef75f25fc36 [2023-04-02 01:46:25,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:46:25,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:46:25,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:46:25,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:46:25,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:46:25,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a79f4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25, skipping insertion in model container [2023-04-02 01:46:25,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:46:25,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:46:25,651 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/dijkstra-u.c[525,538] [2023-04-02 01:46:25,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:46:25,694 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:46:25,705 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/dijkstra-u.c[525,538] [2023-04-02 01:46:25,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:46:25,737 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:46:25,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25 WrapperNode [2023-04-02 01:46:25,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:46:25,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:46:25,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:46:25,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:46:25,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:46:25,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:46:25,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:46:25,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:46:25,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (1/1) ... [2023-04-02 01:46:25,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:46:25,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:46:25,813 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 01:46:25,820 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 01:46:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:46:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:46:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:46:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:46:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:46:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:46:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:46:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:46:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:46:25,901 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:46:25,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:46:26,234 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:46:26,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:46:26,243 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 01:46:26,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:46:26 BoogieIcfgContainer [2023-04-02 01:46:26,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:46:26,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:46:26,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:46:26,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:46:26,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:46:25" (1/3) ... [2023-04-02 01:46:26,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fe09d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:46:26, skipping insertion in model container [2023-04-02 01:46:26,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:46:25" (2/3) ... [2023-04-02 01:46:26,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fe09d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:46:26, skipping insertion in model container [2023-04-02 01:46:26,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:46:26" (3/3) ... [2023-04-02 01:46:26,262 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u.c [2023-04-02 01:46:26,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:46:26,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:46:26,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:46:26,320 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;@122082c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:46:26,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:46:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:46:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:46:26,330 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:46:26,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:46:26,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:46:26,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:46:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash 818818098, now seen corresponding path program 1 times [2023-04-02 01:46:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:46:26,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951132592] [2023-04-02 01:46:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:46:26,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:46:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:26,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:46:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951132592] [2023-04-02 01:46:26,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 01:46:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550621137] [2023-04-02 01:46:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:46:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:46:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:46:26,463 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 01:46:26,465 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 01:46:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:26,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 01:46:26,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:46:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:46:26,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:46:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550621137] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:46:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:46:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 01:46:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992138981] [2023-04-02 01:46:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:46:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 01:46:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:46:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 01:46:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 01:46:26,626 INFO L87 Difference]: Start difference. First operand has 37 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:46:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:46:26,647 INFO L93 Difference]: Finished difference Result 65 states and 105 transitions. [2023-04-02 01:46:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 01:46:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-04-02 01:46:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:46:26,653 INFO L225 Difference]: With dead ends: 65 [2023-04-02 01:46:26,653 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 01:46:26,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 01:46:26,659 INFO L413 NwaCegarLoop]: 47 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, 47 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 01:46:26,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:46:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 01:46:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 01:46:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:46:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-04-02 01:46:26,689 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2023-04-02 01:46:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:46:26,690 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-04-02 01:46:26,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:46:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-04-02 01:46:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 01:46:26,691 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:46:26,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:46:26,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 01:46:26,895 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 01:46:26,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:46:26,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:46:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1723375776, now seen corresponding path program 1 times [2023-04-02 01:46:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:46:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481146960] [2023-04-02 01:46:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:46:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:46:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:46:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:46:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:46:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:46:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481146960] [2023-04-02 01:46:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481146960] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:46:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:46:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:46:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886830257] [2023-04-02 01:46:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:46:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:46:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:46:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:46:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:46:27,363 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:46:29,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:31,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:33,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:46:35,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:46:39,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:41,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:46:42,216 INFO L93 Difference]: Finished difference Result 67 states and 96 transitions. [2023-04-02 01:46:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:46:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-04-02 01:46:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:46:42,218 INFO L225 Difference]: With dead ends: 67 [2023-04-02 01:46:42,218 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 01:46:42,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:46:42,220 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 34 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-04-02 01:46:42,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 27 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 210 Invalid, 6 Unknown, 0 Unchecked, 14.7s Time] [2023-04-02 01:46:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 01:46:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-02 01:46:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:46:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2023-04-02 01:46:42,238 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 19 [2023-04-02 01:46:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:46:42,238 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2023-04-02 01:46:42,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:46:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2023-04-02 01:46:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 01:46:42,239 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:46:42,239 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:46:42,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:46:42,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:46:42,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:46:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1182987237, now seen corresponding path program 1 times [2023-04-02 01:46:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:46:42,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201244402] [2023-04-02 01:46:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:46:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:46:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:46:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:46:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:46:42,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:46:42,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201244402] [2023-04-02 01:46:42,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201244402] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:46:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179616054] [2023-04-02 01:46:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:46:42,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:46:42,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:46:42,645 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 01:46:42,677 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 01:46:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:46:42,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 01:46:42,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:46:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:46:42,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:46:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:46:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179616054] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:46:42,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:46:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-04-02 01:46:42,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034526836] [2023-04-02 01:46:42,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:46:42,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 01:46:42,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:46:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 01:46:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:46:42,994 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:46:50,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:53,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:54,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:57,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:46:59,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:47:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:47:01,290 INFO L93 Difference]: Finished difference Result 125 states and 196 transitions. [2023-04-02 01:47:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 01:47:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-04-02 01:47:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:47:01,293 INFO L225 Difference]: With dead ends: 125 [2023-04-02 01:47:01,293 INFO L226 Difference]: Without dead ends: 101 [2023-04-02 01:47:01,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-04-02 01:47:01,298 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 95 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 258 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:47:01,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 27 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 351 Invalid, 2 Unknown, 0 Unchecked, 18.0s Time] [2023-04-02 01:47:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-04-02 01:47:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 80. [2023-04-02 01:47:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 38 states have call successors, (38), 6 states have call predecessors, (38), 5 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:47:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 118 transitions. [2023-04-02 01:47:01,331 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 118 transitions. Word has length 21 [2023-04-02 01:47:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:47:01,331 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 118 transitions. [2023-04-02 01:47:01,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:47:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 118 transitions. [2023-04-02 01:47:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 01:47:01,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:47:01,333 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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 01:47:01,344 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 01:47:01,541 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,SelfDestructingSolverStorable2 [2023-04-02 01:47:01,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:47:01,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:47:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1777258624, now seen corresponding path program 1 times [2023-04-02 01:47:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:47:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002809143] [2023-04-02 01:47:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:47:01,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:47:01,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807317927] [2023-04-02 01:47:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:01,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:47:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:47:01,562 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 01:47:01,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 01:47:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:47:01,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 01:47:01,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:47:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:47:01,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:47:04,823 WARN L839 $PredicateComparison]: unable to prove that (forall ((main_~n~0 Int) (main_~r~0 Int)) (or (not (= (mod (* c_main_~q~0 main_~n~0) 4294967296) (mod (+ (* c_main_~q~0 main_~r~0) (* c_main_~p~0 c_main_~p~0)) 4294967296))) (= (mod (+ (* c_main_~q~0 main_~n~0 16 c_main_~p~0) (* c_main_~q~0 c_main_~q~0 4294967295 c_main_~h~0) (* c_main_~h~0 c_main_~h~0 c_main_~h~0) (* c_main_~q~0 main_~r~0 c_main_~p~0 4294967280) (* 4294967292 c_main_~q~0 c_main_~q~0 c_main_~p~0) (* c_main_~q~0 main_~r~0 12 c_main_~h~0) (* c_main_~q~0 main_~n~0 4294967284 c_main_~h~0)) 4294967296) 0))) is different from false [2023-04-02 01:47:06,833 WARN L861 $PredicateComparison]: unable to prove that (forall ((main_~n~0 Int) (main_~r~0 Int)) (or (not (= (mod (* c_main_~q~0 main_~n~0) 4294967296) (mod (+ (* c_main_~q~0 main_~r~0) (* c_main_~p~0 c_main_~p~0)) 4294967296))) (= (mod (+ (* c_main_~q~0 main_~n~0 16 c_main_~p~0) (* c_main_~q~0 c_main_~q~0 4294967295 c_main_~h~0) (* c_main_~h~0 c_main_~h~0 c_main_~h~0) (* c_main_~q~0 main_~r~0 c_main_~p~0 4294967280) (* 4294967292 c_main_~q~0 c_main_~q~0 c_main_~p~0) (* c_main_~q~0 main_~r~0 12 c_main_~h~0) (* c_main_~q~0 main_~n~0 4294967284 c_main_~h~0)) 4294967296) 0))) is different from true [2023-04-02 01:47:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:47:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002809143] [2023-04-02 01:47:06,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:47:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807317927] [2023-04-02 01:47:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807317927] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:47:06,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:47:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-04-02 01:47:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497094414] [2023-04-02 01:47:06,836 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 01:47:06,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:47:06,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:47:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:47:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2023-04-02 01:47:06,837 INFO L87 Difference]: Start difference. First operand 80 states and 118 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:47:13,210 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 [] [2023-04-02 01:47:15,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:17,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:19,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:21,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:23,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:25,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:29,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:47:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:47:29,275 INFO L93 Difference]: Finished difference Result 92 states and 128 transitions. [2023-04-02 01:47:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:47:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-04-02 01:47:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:47:29,278 INFO L225 Difference]: With dead ends: 92 [2023-04-02 01:47:29,278 INFO L226 Difference]: Without dead ends: 69 [2023-04-02 01:47:29,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=37, Invalid=96, Unknown=3, NotChecked=20, Total=156 [2023-04-02 01:47:29,279 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:47:29,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 8 Unknown, 0 Unchecked, 20.3s Time] [2023-04-02 01:47:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-04-02 01:47:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-04-02 01:47:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:47:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2023-04-02 01:47:29,298 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 29 [2023-04-02 01:47:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:47:29,299 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2023-04-02 01:47:29,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:47:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2023-04-02 01:47:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 01:47:29,300 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:47:29,300 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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 01:47:29,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:47:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:47:29,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:47:29,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:47:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1684913467, now seen corresponding path program 1 times [2023-04-02 01:47:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:47:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902157117] [2023-04-02 01:47:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:29,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:47:29,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:47:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795777822] [2023-04-02 01:47:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:29,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:47:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:47:29,515 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) [2023-04-02 01:47:29,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 01:47:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:47:29,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 01:47:29,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:47:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 01:47:30,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:47:36,140 WARN L839 $PredicateComparison]: unable to prove that (forall ((main_~n~0 Int) (main_~q~0 Int) (main_~r~0 Int)) (or (= (mod (+ (* main_~q~0 main_~q~0 4294967295 c_main_~h~0) (* 4294967292 main_~q~0 main_~q~0 c_main_~p~0) (* main_~q~0 main_~r~0 12 c_main_~h~0) (* main_~q~0 main_~n~0 4294967284 c_main_~h~0) (* c_main_~h~0 c_main_~h~0 c_main_~h~0) (* main_~q~0 main_~r~0 c_main_~p~0 4294967280) (* main_~q~0 main_~n~0 16 c_main_~p~0)) 4294967296) 0) (not (= (mod (+ (* main_~q~0 main_~r~0) (* c_main_~p~0 c_main_~p~0)) 4294967296) (mod (* main_~q~0 main_~n~0) 4294967296))))) is different from false [2023-04-02 01:47:36,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:47:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902157117] [2023-04-02 01:47:36,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:47:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795777822] [2023-04-02 01:47:36,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795777822] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:47:36,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:47:36,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-04-02 01:47:36,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062882632] [2023-04-02 01:47:36,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 01:47:36,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:47:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:47:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:47:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2023-04-02 01:47:36,433 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:47:38,440 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 [] [2023-04-02 01:47:41,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:43,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:45,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:47,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:49,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:51,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:47:55,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:47:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:47:55,198 INFO L93 Difference]: Finished difference Result 86 states and 122 transitions. [2023-04-02 01:47:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:47:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-04-02 01:47:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:47:55,199 INFO L225 Difference]: With dead ends: 86 [2023-04-02 01:47:55,199 INFO L226 Difference]: Without dead ends: 83 [2023-04-02 01:47:55,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-04-02 01:47:55,200 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:47:55,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 124 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 7 Unknown, 0 Unchecked, 18.5s Time] [2023-04-02 01:47:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-04-02 01:47:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-04-02 01:47:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 37 states have call successors, (37), 7 states have call predecessors, (37), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:47:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2023-04-02 01:47:55,222 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 31 [2023-04-02 01:47:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:47:55,222 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2023-04-02 01:47:55,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:47:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2023-04-02 01:47:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 01:47:55,224 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:47:55,224 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 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, 1, 1, 1, 1, 1] [2023-04-02 01:47:55,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 01:47:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:47:55,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:47:55,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:47:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1928736347, now seen corresponding path program 1 times [2023-04-02 01:47:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:47:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897679815] [2023-04-02 01:47:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:47:55,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:47:55,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894269257] [2023-04-02 01:47:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:47:55,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:47:55,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:47:55,445 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) [2023-04-02 01:47:55,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 01:47:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:47:55,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 01:47:55,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:47:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 01:47:55,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:48:03,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:48:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897679815] [2023-04-02 01:48:03,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:48:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894269257] [2023-04-02 01:48:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894269257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:48:03,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:48:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-04-02 01:48:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740979013] [2023-04-02 01:48:03,083 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 01:48:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:48:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:48:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:48:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=224, Unknown=1, NotChecked=0, Total=272 [2023-04-02 01:48:03,085 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 01:48:10,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:48:14,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:48:15,564 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2023-04-02 01:48:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:48:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 54 [2023-04-02 01:48:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:48:15,567 INFO L225 Difference]: With dead ends: 125 [2023-04-02 01:48:15,567 INFO L226 Difference]: Without dead ends: 100 [2023-04-02 01:48:15,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=65, Invalid=314, Unknown=1, NotChecked=0, Total=380 [2023-04-02 01:48:15,568 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:48:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 174 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 434 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2023-04-02 01:48:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-02 01:48:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2023-04-02 01:48:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 49 states have (on average 1.163265306122449) internal successors, (57), 52 states have internal predecessors, (57), 38 states have call successors, (38), 10 states have call predecessors, (38), 9 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:48:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2023-04-02 01:48:15,603 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 54 [2023-04-02 01:48:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:48:15,603 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2023-04-02 01:48:15,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 01:48:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2023-04-02 01:48:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 01:48:15,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:48:15,608 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 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, 1, 1, 1, 1, 1] [2023-04-02 01:48:15,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 01:48:15,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:15,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:48:15,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:48:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1871478045, now seen corresponding path program 1 times [2023-04-02 01:48:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:48:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374787654] [2023-04-02 01:48:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:48:15,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:48:15,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282637529] [2023-04-02 01:48:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:15,827 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) [2023-04-02 01:48:15,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 01:48:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:48:15,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 01:48:15,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:48:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:48:16,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:48:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:48:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:48:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374787654] [2023-04-02 01:48:16,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:48:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282637529] [2023-04-02 01:48:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282637529] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:48:16,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:48:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-04-02 01:48:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744511630] [2023-04-02 01:48:16,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:48:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:48:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:48:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:48:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:48:16,296 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 01:48:19,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:21,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:24,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:27,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:33,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:35,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:37,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:39,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:42,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:44,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:46,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-04-02 01:48:50,085 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 [] [2023-04-02 01:48:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:48:50,349 INFO L93 Difference]: Finished difference Result 142 states and 199 transitions. [2023-04-02 01:48:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:48:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 54 [2023-04-02 01:48:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:48:50,350 INFO L225 Difference]: With dead ends: 142 [2023-04-02 01:48:50,350 INFO L226 Difference]: Without dead ends: 108 [2023-04-02 01:48:50,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:48:50,352 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 50 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-04-02 01:48:50,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 130 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 143 Invalid, 11 Unknown, 0 Unchecked, 33.8s Time] [2023-04-02 01:48:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-02 01:48:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-02 01:48:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 57 states have internal predecessors, (64), 43 states have call successors, (43), 10 states have call predecessors, (43), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:48:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2023-04-02 01:48:50,379 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 54 [2023-04-02 01:48:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:48:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2023-04-02 01:48:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 01:48:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2023-04-02 01:48:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 01:48:50,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:48:50,381 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 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, 1, 1, 1, 1] [2023-04-02 01:48:50,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 01:48:50,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:50,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:48:50,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:48:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1790286922, now seen corresponding path program 2 times [2023-04-02 01:48:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:48:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619551142] [2023-04-02 01:48:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:48:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:48:50,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 01:48:50,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055505654] [2023-04-02 01:48:50,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:48:50,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:48:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:48:50,608 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) [2023-04-02 01:48:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 01:48:50,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:48:50,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:48:50,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 34 conjunts are in the unsatisfiable core [2023-04-02 01:48:50,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:48:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-02 01:48:51,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:49:31,272 WARN L223 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 01:49:50,456 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~q~0 1073741824)) (.cse0 (mod c_main_~n~0 4294967296))) (or (< .cse0 (mod c_main_~q~0 4294967296)) (not (= (mod (+ (* 4294967292 c_main_~q~0 c_main_~n~0) (* c_main_~q~0 c_main_~r~0 4) (* c_main_~p~0 c_main_~p~0)) 4294967296) 0)) (< (mod (+ c_main_~r~0 (* 4294967295 .cse1) (* 4294967295 c_main_~p~0)) 4294967296) (mod (+ (* 3 .cse1) (* 2 (div (mod c_main_~p~0 4294967296) 2))) 4294967296)) (<= (* 4 .cse1) .cse0))) is different from true [2023-04-02 01:50:11,944 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_main_~n~0 4294967296)) (.cse0 (mod c_main_~q~0 268435456))) (or (<= (* .cse0 16) .cse1) (< .cse1 (* 4 (mod c_main_~q~0 1073741824))) (< (mod (+ c_main_~r~0 (* 4294967292 .cse0) (* 4294967295 c_main_~p~0)) 4294967296) (* 2 (mod (+ (div (mod c_main_~p~0 4294967296) 2) (* .cse0 6)) 2147483648))) (not (= (mod (+ (* c_main_~q~0 c_main_~n~0 4294967280) (* c_main_~q~0 16 c_main_~r~0) (* c_main_~p~0 c_main_~p~0)) 4294967296) 0)))) is different from true [2023-04-02 01:50:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 6 not checked. [2023-04-02 01:50:25,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:50:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619551142] [2023-04-02 01:50:25,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 01:50:25,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055505654] [2023-04-02 01:50:25,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055505654] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:50:25,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:50:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-04-02 01:50:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047224515] [2023-04-02 01:50:25,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:50:25,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 01:50:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:50:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 01:50:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=318, Unknown=3, NotChecked=74, Total=462 [2023-04-02 01:50:25,507 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 19 states have internal predecessors, (41), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 01:50:27,903 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 [] [2023-04-02 01:50:30,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:50:32,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:50:34,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:50:36,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:50:39,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:50:56,513 WARN L223 SmtUtils]: Spent 9.99s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 01:50:59,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:51:01,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 01:51:03,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []