/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/array-fpi/ssina.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:08:01,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:08:01,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:08:01,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 20:08:01,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 20:08:01,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 20:08:01,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 20:08:01,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 20:08:01,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 20:08:01,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 20:08:01,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 20:08:01,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 20:08:01,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:08:01,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:08:01,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:08:01,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:08:01,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:08:01,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:08:01,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:08:01,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:08:01,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:08:01,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:08:01,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:08:01,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:08:01,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:08:01,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 20:08:01,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 20:08:01,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 20:08:01,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 20:08:01,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 20:08:01,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 20:08:01,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 20:08:01,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 20:08:01,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:08:01,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:08:01,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:08:01,760 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 [2023-04-01 20:08:01,788 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:08:01,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:08:01,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:08:01,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:08:01,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:08:01,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:08:01,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:08:01,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:08:01,791 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:08:01,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:08:01,792 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:08:01,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:08:01,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:08:01,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:08:01,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:08:01,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:08:01,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:08:01,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:08:01,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:08:01,795 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:08:01,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:08:01,796 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:08:01,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:08:02,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:08:02,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:08:02,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:08:02,050 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:08:02,051 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:08:02,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2023-04-01 20:08:03,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:08:03,376 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:08:03,377 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2023-04-01 20:08:03,383 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2702b3053/082f1101ef1a4a80a1cb83fc08e0c65b/FLAG98541b318 [2023-04-01 20:08:03,398 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2702b3053/082f1101ef1a4a80a1cb83fc08e0c65b [2023-04-01 20:08:03,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:08:03,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:08:03,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:08:03,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:08:03,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:08:03,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1367e30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03, skipping insertion in model container [2023-04-01 20:08:03,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:08:03,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:08:03,574 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/array-fpi/ssina.c[588,601] [2023-04-01 20:08:03,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:08:03,601 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:08:03,612 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/array-fpi/ssina.c[588,601] [2023-04-01 20:08:03,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:08:03,632 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:08:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03 WrapperNode [2023-04-01 20:08:03,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:08:03,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:08:03,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:08:03,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:08:03,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:08:03,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:08:03,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:08:03,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:08:03,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (1/1) ... [2023-04-01 20:08:03,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:08:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:03,691 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) [2023-04-01 20:08:03,695 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 [2023-04-01 20:08:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:08:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:08:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:08:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 20:08:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 20:08:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:08:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:08:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:08:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:08:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:08:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:08:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:08:03,798 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:08:03,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:08:03,965 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:08:03,970 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:08:03,971 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-04-01 20:08:03,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:08:03 BoogieIcfgContainer [2023-04-01 20:08:03,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:08:03,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:08:03,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:08:03,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:08:03,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:08:03" (1/3) ... [2023-04-01 20:08:03,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12772181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:08:03, skipping insertion in model container [2023-04-01 20:08:03,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:08:03" (2/3) ... [2023-04-01 20:08:03,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12772181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:08:03, skipping insertion in model container [2023-04-01 20:08:03,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:08:03" (3/3) ... [2023-04-01 20:08:03,979 INFO L112 eAbstractionObserver]: Analyzing ICFG ssina.c [2023-04-01 20:08:03,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:08:03,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:08:04,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:08:04,059 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;@4686ba30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:08:04,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:08:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 20:08:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-01 20:08:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:04,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:08:04,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:04,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1145952651, now seen corresponding path program 1 times [2023-04-01 20:08:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114047850] [2023-04-01 20:08:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:08:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:04,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114047850] [2023-04-01 20:08:04,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 20:08:04,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886440515] [2023-04-01 20:08:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:04,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:04,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:04,235 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) [2023-04-01 20:08:04,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:08:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:08:04,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-01 20:08:04,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:04,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:08:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886440515] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:08:04,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:08:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 20:08:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656509769] [2023-04-01 20:08:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:08:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 20:08:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 20:08:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 20:08:04,441 INFO L87 Difference]: Start difference. First operand has 43 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2023-04-01 20:08:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:08:04,477 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2023-04-01 20:08:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 20:08:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 28 [2023-04-01 20:08:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:08:04,485 INFO L225 Difference]: With dead ends: 76 [2023-04-01 20:08:04,485 INFO L226 Difference]: Without dead ends: 38 [2023-04-01 20:08:04,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 20:08:04,493 INFO L413 NwaCegarLoop]: 49 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, 49 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 [2023-04-01 20:08:04,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 20:08:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-01 20:08:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-04-01 20:08:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:08:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-04-01 20:08:04,521 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2023-04-01 20:08:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:08:04,522 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-04-01 20:08:04,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2023-04-01 20:08:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-04-01 20:08:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-01 20:08:04,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:04,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:08:04,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:08:04,725 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 [2023-04-01 20:08:04,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:04,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1573045881, now seen corresponding path program 1 times [2023-04-01 20:08:04,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:04,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795665881] [2023-04-01 20:08:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:08:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795665881] [2023-04-01 20:08:04,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 20:08:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847338276] [2023-04-01 20:08:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:04,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:04,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:04,835 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) [2023-04-01 20:08:04,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:08:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:08:04,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 20:08:04,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:04,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:08:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847338276] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:08:04,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:08:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:08:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675652406] [2023-04-01 20:08:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:08:04,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 20:08:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 20:08:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:08:04,991 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:08:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:08:05,082 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2023-04-01 20:08:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 20:08:05,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-04-01 20:08:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:08:05,086 INFO L225 Difference]: With dead ends: 75 [2023-04-01 20:08:05,087 INFO L226 Difference]: Without dead ends: 52 [2023-04-01 20:08:05,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:08:05,089 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 51 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:08:05,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 37 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 20:08:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-01 20:08:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2023-04-01 20:08:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:08:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-04-01 20:08:05,110 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2023-04-01 20:08:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:08:05,111 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-04-01 20:08:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 20:08:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-04-01 20:08:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-01 20:08:05,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:05,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:08:05,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:08:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-01 20:08:05,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:05,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1009849533, now seen corresponding path program 1 times [2023-04-01 20:08:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:05,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269053491] [2023-04-01 20:08:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:05,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 20:08:05,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355531746] [2023-04-01 20:08:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:05,365 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) [2023-04-01 20:08:05,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:08:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:08:05,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 62 conjunts are in the unsatisfiable core [2023-04-01 20:08:05,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:05,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-04-01 20:08:05,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-01 20:08:05,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 20:08:05,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-01 20:08:05,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-01 20:08:05,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-01 20:08:06,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-01 20:08:06,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-04-01 20:08:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:06,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:08:11,848 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 20:08:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269053491] [2023-04-01 20:08:12,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 20:08:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355531746] [2023-04-01 20:08:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355531746] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:08:12,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 20:08:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-04-01 20:08:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330949508] [2023-04-01 20:08:12,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 20:08:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-04-01 20:08:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-04-01 20:08:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1480, Unknown=2, NotChecked=0, Total=1722 [2023-04-01 20:08:12,270 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 42 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:08:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:08:21,572 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2023-04-01 20:08:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:08:21,573 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-04-01 20:08:21,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:08:21,575 INFO L225 Difference]: With dead ends: 92 [2023-04-01 20:08:21,575 INFO L226 Difference]: Without dead ends: 90 [2023-04-01 20:08:21,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=503, Invalid=3155, Unknown=2, NotChecked=0, Total=3660 [2023-04-01 20:08:21,578 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 98 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:08:21,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 274 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 20:08:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-04-01 20:08:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2023-04-01 20:08:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 20:08:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2023-04-01 20:08:21,594 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 38 [2023-04-01 20:08:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:08:21,594 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2023-04-01 20:08:21,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 38 states have internal predecessors, (60), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:08:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2023-04-01 20:08:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-01 20:08:21,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:21,596 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:08:21,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 20:08:21,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:21,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:21,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -709369797, now seen corresponding path program 2 times [2023-04-01 20:08:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013370187] [2023-04-01 20:08:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:21,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 20:08:21,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809647689] [2023-04-01 20:08:21,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 20:08:21,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:21,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:21,843 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) [2023-04-01 20:08:21,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:08:21,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 20:08:21,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 20:08:21,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:08:21,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 20:08:21,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:08:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 20:08:22,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013370187] [2023-04-01 20:08:22,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 20:08:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809647689] [2023-04-01 20:08:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809647689] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:08:22,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 20:08:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-04-01 20:08:22,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584872147] [2023-04-01 20:08:22,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 20:08:22,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 20:08:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 20:08:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:08:22,035 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:08:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:08:22,261 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2023-04-01 20:08:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 20:08:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 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 40 [2023-04-01 20:08:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:08:22,264 INFO L225 Difference]: With dead ends: 123 [2023-04-01 20:08:22,264 INFO L226 Difference]: Without dead ends: 100 [2023-04-01 20:08:22,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:08:22,265 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:08:22,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 106 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 20:08:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-01 20:08:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2023-04-01 20:08:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 69 states have internal predecessors, (80), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 20:08:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-04-01 20:08:22,282 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 40 [2023-04-01 20:08:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:08:22,282 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-04-01 20:08:22,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:08:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-04-01 20:08:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 20:08:22,283 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:22,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:08:22,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:08:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:22,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:22,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1283789753, now seen corresponding path program 3 times [2023-04-01 20:08:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879868689] [2023-04-01 20:08:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:22,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 20:08:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332966631] [2023-04-01 20:08:22,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 20:08:22,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:22,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:22,519 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) [2023-04-01 20:08:22,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:08:22,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 20:08:22,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 20:08:22,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 20:08:22,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 20:08:22,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:08:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 20:08:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879868689] [2023-04-01 20:08:22,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 20:08:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332966631] [2023-04-01 20:08:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332966631] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:08:22,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 20:08:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-04-01 20:08:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910474163] [2023-04-01 20:08:22,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 20:08:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:08:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:08:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:08:22,773 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:08:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:08:23,102 INFO L93 Difference]: Finished difference Result 186 states and 214 transitions. [2023-04-01 20:08:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 20:08:23,103 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (4), 2 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 42 [2023-04-01 20:08:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:08:23,107 INFO L225 Difference]: With dead ends: 186 [2023-04-01 20:08:23,107 INFO L226 Difference]: Without dead ends: 117 [2023-04-01 20:08:23,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-04-01 20:08:23,117 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 156 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:08:23,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 114 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 20:08:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-04-01 20:08:23,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2023-04-01 20:08:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 88 states have internal predecessors, (99), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 20:08:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2023-04-01 20:08:23,159 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 42 [2023-04-01 20:08:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:08:23,159 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2023-04-01 20:08:23,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:08:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2023-04-01 20:08:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 20:08:23,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:08:23,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:08:23,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:08:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:23,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:08:23,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:08:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash -827874189, now seen corresponding path program 4 times [2023-04-01 20:08:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:08:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742550427] [2023-04-01 20:08:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:08:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:08:23,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 20:08:23,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517184158] [2023-04-01 20:08:23,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 20:08:23,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:08:23,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:08:23,396 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) [2023-04-01 20:08:23,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:08:23,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 20:08:23,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 20:08:23,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 93 conjunts are in the unsatisfiable core [2023-04-01 20:08:23,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:08:23,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-04-01 20:08:23,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-01 20:08:23,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 20:08:23,645 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 20:08:23,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-04-01 20:08:23,792 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2023-04-01 20:08:23,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 35 [2023-04-01 20:08:23,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,052 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-04-01 20:08:24,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,127 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 20:08:24,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,210 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-04-01 20:08:24,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,264 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2023-04-01 20:08:24,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 35 [2023-04-01 20:08:24,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,523 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-04-01 20:08:24,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,608 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 20:08:24,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-04-01 20:08:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:24,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:08:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:08:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:08:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742550427] [2023-04-01 20:08:39,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 20:08:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517184158] [2023-04-01 20:08:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517184158] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:08:39,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 20:08:39,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-04-01 20:08:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471583460] [2023-04-01 20:08:39,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 20:08:39,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-04-01 20:08:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:08:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-04-01 20:08:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2980, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 20:08:39,371 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 58 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 56 states have internal predecessors, (76), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:09:41,784 WARN L223 SmtUtils]: Spent 33.02s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 20:09:44,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:09:46,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:09:48,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:09:50,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:09:52,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:09:54,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-04-01 20:09:56,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-04-01 20:09:59,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:10:01,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:10:03,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:10:05,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:10:08,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:10:09,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-04-01 20:10:11,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-04-01 20:11:15,022 WARN L223 SmtUtils]: Spent 15.59s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 20:11:20,400 WARN L861 $PredicateComparison]: unable to prove that (let ((.cse100 (* c_main_~i~0 8))) (let ((.cse52 (select |c_#memory_int| c_main_~a~0.base)) (.cse98 (+ c_main_~a~0.offset .cse100)) (.cse13 (select |c_#memory_int| |c_main_~#sum~0.base|))) (let ((.cse10 (select .cse13 |c_main_~#sum~0.offset|)) (.cse11 (select .cse52 .cse98))) (let ((.cse99 (+ .cse10 .cse11))) (let ((.cse93 (store .cse52 .cse98 .cse99)) (.cse15 (+ c_main_~a~0.offset .cse100 8))) (let ((.cse33 (select .cse52 .cse15)) (.cse25 (+ c_main_~i~0 1)) (.cse36 (store |c_#memory_int| c_main_~a~0.base .cse93)) (.cse53 (+ c_main_~i~0 2)) (.cse22 (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse13 |c_main_~#sum~0.offset| .cse99)))) (let ((.cse14 (select .cse22 c_main_~a~0.base)) (.cse17 (< .cse53 c_~N~0)) (.cse24 (<= c_~N~0 c_main_~i~0)) (.cse1 (<= c_~N~0 1)) (.cse66 (store .cse52 .cse98 1)) (.cse37 (select .cse36 |c_main_~#sum~0.base|)) (.cse0 (<= c_~N~0 .cse25)) (.cse6 (+ c_main_~a~0.offset 8)) (.cse34 (+ .cse33 .cse10)) (.cse16 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1))) (and (or .cse0 .cse1 (= (let ((.cse2 (let ((.cse12 (select .cse14 .cse15))) (let ((.cse7 (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse13 |c_main_~#sum~0.offset| (+ .cse10 .cse11 .cse12))))) (store .cse7 c_main_~a~0.base (let ((.cse9 (select .cse7 c_main_~a~0.base))) (let ((.cse8 (store .cse9 c_main_~a~0.offset (+ .cse10 (select .cse9 c_main_~a~0.offset) .cse11 .cse12)))) (store .cse8 .cse6 (+ (select (select (store .cse7 c_main_~a~0.base .cse8) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) (select .cse9 .cse6)))))))))) (let ((.cse3 (select .cse2 |c_main_~#sum~0.base|))) (let ((.cse4 (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse5 (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |c_main_~#sum~0.offset| .cse4)) c_main_~a~0.base) .cse6))) (+ (select (select (store .cse2 |c_main_~#sum~0.base| (store .cse3 |c_main_~#sum~0.offset| (+ .cse4 .cse5))) c_main_~a~0.base) c_main_~a~0.offset) .cse4 .cse5))))) .cse16) .cse17) (or (= (let ((.cse20 (store .cse22 c_main_~a~0.base (let ((.cse23 (store .cse14 c_main_~a~0.offset (+ .cse10 .cse11 (select .cse14 c_main_~a~0.offset))))) (store .cse23 .cse6 (+ (select .cse14 .cse6) (select (select (store .cse22 c_main_~a~0.base .cse23) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|))))))) (let ((.cse21 (select .cse20 |c_main_~#sum~0.base|))) (let ((.cse18 (select (select (store .cse20 |c_main_~#sum~0.base| (store .cse21 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse19 (select (select (store .cse20 |c_main_~#sum~0.base| (store .cse21 |c_main_~#sum~0.offset| .cse18)) c_main_~a~0.base) .cse6))) (+ .cse18 .cse19 (select (select (store .cse20 |c_main_~#sum~0.base| (store .cse21 |c_main_~#sum~0.offset| (+ .cse18 .cse19))) c_main_~a~0.base) c_main_~a~0.offset)))))) .cse16) .cse1 .cse24 (< .cse25 c_~N~0)) (or (= (let ((.cse28 (let ((.cse30 (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse13 |c_main_~#sum~0.offset| .cse34)))) (store .cse30 c_main_~a~0.base (let ((.cse32 (select .cse30 c_main_~a~0.base))) (let ((.cse31 (store .cse32 c_main_~a~0.offset (+ .cse33 .cse10 (select .cse32 c_main_~a~0.offset))))) (store .cse31 .cse6 (+ (select .cse32 .cse6) (select (select (store .cse30 c_main_~a~0.base .cse31) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|))))))))) (let ((.cse29 (select .cse28 |c_main_~#sum~0.base|))) (let ((.cse27 (select (select (store .cse28 |c_main_~#sum~0.base| (store .cse29 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse26 (select (select (store .cse28 |c_main_~#sum~0.base| (store .cse29 |c_main_~#sum~0.offset| .cse27)) c_main_~a~0.base) .cse6))) (+ .cse26 .cse27 (select (select (store .cse28 |c_main_~#sum~0.base| (store .cse29 |c_main_~#sum~0.offset| (+ .cse26 .cse27))) c_main_~a~0.base) c_main_~a~0.offset)))))) .cse16) .cse0 .cse1 .cse17) (or (= (let ((.cse35 (select (select (store .cse36 |c_main_~#sum~0.base| (store .cse37 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse38 (select (select (store .cse36 |c_main_~#sum~0.base| (store .cse37 |c_main_~#sum~0.offset| .cse35)) c_main_~a~0.base) .cse6))) (+ .cse35 (select (select (store .cse36 |c_main_~#sum~0.base| (store .cse37 |c_main_~#sum~0.offset| (+ .cse35 .cse38))) c_main_~a~0.base) c_main_~a~0.offset) .cse38))) .cse16) .cse24) (forall ((~N~0 Int)) (or (<= ~N~0 .cse25) (<= ~N~0 1) (= (let ((.cse41 (let ((.cse51 (store .cse52 .cse15 1))) (let ((.cse49 (store |c_#memory_int| c_main_~a~0.base .cse51))) (let ((.cse50 (select .cse49 |c_main_~#sum~0.base|))) (let ((.cse46 (select .cse51 c_main_~a~0.offset)) (.cse47 (select .cse50 |c_main_~#sum~0.offset|))) (let ((.cse48 (select (select (store .cse49 |c_main_~#sum~0.base| (store .cse50 |c_main_~#sum~0.offset| (+ .cse46 .cse47))) c_main_~a~0.base) .cse6))) (let ((.cse43 (store .cse49 |c_main_~#sum~0.base| (store .cse50 |c_main_~#sum~0.offset| (+ .cse46 .cse47 .cse48))))) (store .cse43 c_main_~a~0.base (let ((.cse45 (select .cse43 c_main_~a~0.base))) (let ((.cse44 (store .cse45 c_main_~a~0.offset (+ .cse46 .cse47 .cse48 (select .cse45 c_main_~a~0.offset))))) (store .cse44 .cse6 (+ (select .cse45 .cse6) (select (select (store .cse43 c_main_~a~0.base .cse44) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|)))))))))))))) (let ((.cse42 (select .cse41 |c_main_~#sum~0.base|))) (let ((.cse39 (select (select (store .cse41 |c_main_~#sum~0.base| (store .cse42 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse40 (select (select (store .cse41 |c_main_~#sum~0.base| (store .cse42 |c_main_~#sum~0.offset| .cse39)) c_main_~a~0.base) .cse6))) (+ .cse39 .cse40 (select (select (store .cse41 |c_main_~#sum~0.base| (store .cse42 |c_main_~#sum~0.offset| (+ .cse39 .cse40))) c_main_~a~0.base) c_main_~a~0.offset)))))) (+ (* 2 ~N~0) (* ~N~0 ~N~0) 1)) (< 2 ~N~0) (< .cse53 ~N~0))) (forall ((~N~0 Int)) (or (<= ~N~0 c_main_~i~0) (<= ~N~0 1) (< .cse25 ~N~0) (= (+ (* 2 ~N~0) (* ~N~0 ~N~0) 1) (let ((.cse55 (let ((.cse64 (store |c_#memory_int| c_main_~a~0.base .cse66))) (let ((.cse65 (select .cse64 |c_main_~#sum~0.base|))) (let ((.cse62 (select .cse66 c_main_~a~0.offset)) (.cse63 (select .cse65 |c_main_~#sum~0.offset|))) (let ((.cse61 (select (select (store .cse64 |c_main_~#sum~0.base| (store .cse65 |c_main_~#sum~0.offset| (+ .cse62 .cse63))) c_main_~a~0.base) .cse6))) (let ((.cse58 (store .cse64 |c_main_~#sum~0.base| (store .cse65 |c_main_~#sum~0.offset| (+ .cse61 .cse62 .cse63))))) (store .cse58 c_main_~a~0.base (let ((.cse60 (select .cse58 c_main_~a~0.base))) (let ((.cse59 (store .cse60 c_main_~a~0.offset (+ .cse61 .cse62 (select .cse60 c_main_~a~0.offset) .cse63)))) (store .cse59 .cse6 (+ (select (select (store .cse58 c_main_~a~0.base .cse59) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) (select .cse60 .cse6))))))))))))) (let ((.cse56 (select .cse55 |c_main_~#sum~0.base|))) (let ((.cse54 (select (select (store .cse55 |c_main_~#sum~0.base| (store .cse56 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse57 (select (select (store .cse55 |c_main_~#sum~0.base| (store .cse56 |c_main_~#sum~0.offset| .cse54)) c_main_~a~0.base) .cse6))) (+ .cse54 (select (select (store .cse55 |c_main_~#sum~0.base| (store .cse56 |c_main_~#sum~0.offset| (+ .cse54 .cse57))) c_main_~a~0.base) c_main_~a~0.offset) .cse57)))))) (< 2 ~N~0))) (or (< 2 c_~N~0) (= (let ((.cse67 (let ((.cse74 (select .cse52 c_main_~a~0.offset))) (let ((.cse75 (select (select (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse13 |c_main_~#sum~0.offset| (+ .cse74 .cse10))) c_main_~a~0.base) .cse6))) (let ((.cse71 (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse13 |c_main_~#sum~0.offset| (+ .cse74 .cse10 .cse75))))) (store .cse71 c_main_~a~0.base (let ((.cse73 (select .cse71 c_main_~a~0.base))) (let ((.cse72 (store .cse73 c_main_~a~0.offset (+ .cse74 .cse10 (select .cse73 c_main_~a~0.offset) .cse75)))) (store .cse72 .cse6 (+ (select (select (store .cse71 c_main_~a~0.base .cse72) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) (select .cse73 .cse6))))))))))) (let ((.cse68 (select .cse67 |c_main_~#sum~0.base|))) (let ((.cse69 (select (select (store .cse67 |c_main_~#sum~0.base| (store .cse68 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse70 (select (select (store .cse67 |c_main_~#sum~0.base| (store .cse68 |c_main_~#sum~0.offset| .cse69)) c_main_~a~0.base) .cse6))) (+ (select (select (store .cse67 |c_main_~#sum~0.base| (store .cse68 |c_main_~#sum~0.offset| (+ .cse69 .cse70))) c_main_~a~0.base) c_main_~a~0.offset) .cse69 .cse70))))) .cse16) .cse1) (forall ((~N~0 Int)) (or (<= ~N~0 .cse25) (= (+ (* 2 ~N~0) (* ~N~0 ~N~0) 1) (let ((.cse78 (let ((.cse88 (store .cse66 .cse15 1))) (let ((.cse86 (store |c_#memory_int| c_main_~a~0.base .cse88))) (let ((.cse87 (select .cse86 |c_main_~#sum~0.base|))) (let ((.cse83 (select .cse87 |c_main_~#sum~0.offset|)) (.cse84 (select .cse88 c_main_~a~0.offset))) (let ((.cse85 (select (select (store .cse86 |c_main_~#sum~0.base| (store .cse87 |c_main_~#sum~0.offset| (+ .cse83 .cse84))) c_main_~a~0.base) .cse6))) (let ((.cse80 (store .cse86 |c_main_~#sum~0.base| (store .cse87 |c_main_~#sum~0.offset| (+ .cse83 .cse84 .cse85))))) (store .cse80 c_main_~a~0.base (let ((.cse82 (select .cse80 c_main_~a~0.base))) (let ((.cse81 (store .cse82 c_main_~a~0.offset (+ .cse83 .cse84 .cse85 (select .cse82 c_main_~a~0.offset))))) (store .cse81 .cse6 (+ (select .cse82 .cse6) (select (select (store .cse80 c_main_~a~0.base .cse81) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|)))))))))))))) (let ((.cse79 (select .cse78 |c_main_~#sum~0.base|))) (let ((.cse76 (select (select (store .cse78 |c_main_~#sum~0.base| (store .cse79 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse77 (select (select (store .cse78 |c_main_~#sum~0.base| (store .cse79 |c_main_~#sum~0.offset| .cse76)) c_main_~a~0.base) .cse6))) (+ .cse76 .cse77 (select (select (store .cse78 |c_main_~#sum~0.base| (store .cse79 |c_main_~#sum~0.offset| (+ .cse76 .cse77))) c_main_~a~0.base) c_main_~a~0.offset))))))) (<= ~N~0 1) (< 2 ~N~0) (< .cse53 ~N~0))) (or (= (let ((.cse89 (store |c_#memory_int| c_main_~a~0.base (store .cse93 .cse15 (+ .cse33 (select .cse37 |c_main_~#sum~0.offset|)))))) (let ((.cse90 (select .cse89 |c_main_~#sum~0.base|))) (let ((.cse92 (select (select (store .cse89 |c_main_~#sum~0.base| (store .cse90 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse91 (select (select (store .cse89 |c_main_~#sum~0.base| (store .cse90 |c_main_~#sum~0.offset| .cse92)) c_main_~a~0.base) .cse6))) (+ (select (select (store .cse89 |c_main_~#sum~0.base| (store .cse90 |c_main_~#sum~0.offset| (+ .cse91 .cse92))) c_main_~a~0.base) c_main_~a~0.offset) .cse91 .cse92))))) .cse16) .cse0) (or .cse0 (= (let ((.cse95 (store |c_#memory_int| c_main_~a~0.base (store .cse52 .cse15 .cse34)))) (let ((.cse96 (select .cse95 |c_main_~#sum~0.base|))) (let ((.cse97 (select (select (store .cse95 |c_main_~#sum~0.base| (store .cse96 |c_main_~#sum~0.offset| 0)) c_main_~a~0.base) c_main_~a~0.offset))) (let ((.cse94 (select (select (store .cse95 |c_main_~#sum~0.base| (store .cse96 |c_main_~#sum~0.offset| .cse97)) c_main_~a~0.base) .cse6))) (+ .cse94 (select (select (store .cse95 |c_main_~#sum~0.base| (store .cse96 |c_main_~#sum~0.offset| (+ .cse94 .cse97))) c_main_~a~0.base) c_main_~a~0.offset) .cse97))))) .cse16)))))))))) is different from true