/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/mods.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:32:46,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:32:46,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:32:46,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 22:32:46,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 22:32:46,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 22:32:46,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 22:32:46,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 22:32:46,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 22:32:46,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 22:32:46,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 22:32:46,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 22:32:46,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:32:46,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:32:46,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:32:46,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:32:46,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:32:46,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:32:46,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:32:46,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:32:46,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:32:46,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:32:46,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:32:46,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:32:46,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:32:46,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:32:46,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:32:46,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:32:46,548 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 [2023-03-30 22:32:46,570 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:32:46,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:32:46,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:32:46,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:32:46,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:32:46,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:32:46,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:32:46,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:32:46,572 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:32:46,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:32:46,573 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:32:46,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:32:46,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:32:46,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:32:46,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:32:46,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:32:46,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:32:46,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:32:46,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:32:46,749 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:32:46,750 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:32:46,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/mods.c [2023-03-30 22:32:47,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:32:47,837 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:32:47,837 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/mods.c [2023-03-30 22:32:47,841 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124bbb9df/e872009495f048959f49b030ef77626e/FLAG796d11155 [2023-03-30 22:32:47,855 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124bbb9df/e872009495f048959f49b030ef77626e [2023-03-30 22:32:47,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:32:47,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:32:47,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:32:47,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:32:47,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:32:47,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:32:47" (1/1) ... [2023-03-30 22:32:47,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db143eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:47, skipping insertion in model container [2023-03-30 22:32:47,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:32:47" (1/1) ... [2023-03-30 22:32:47,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:32:47,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:32:47,971 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/mods.c[587,600] [2023-03-30 22:32:47,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:32:47,989 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:32:47,997 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/mods.c[587,600] [2023-03-30 22:32:48,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:32:48,015 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:32:48,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48 WrapperNode [2023-03-30 22:32:48,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:32:48,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:32:48,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:32:48,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:32:48,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:32:48,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:32:48,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:32:48,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:32:48,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (1/1) ... [2023-03-30 22:32:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:32:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:32:48,064 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) [2023-03-30 22:32:48,066 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 [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-30 22:32:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:32:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:32:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:32:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:32:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:32:48,135 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:32:48,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:32:48,248 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:32:48,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:32:48,252 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-30 22:32:48,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:32:48 BoogieIcfgContainer [2023-03-30 22:32:48,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:32:48,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:32:48,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:32:48,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:32:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:32:47" (1/3) ... [2023-03-30 22:32:48,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611f9d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:32:48, skipping insertion in model container [2023-03-30 22:32:48,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:32:48" (2/3) ... [2023-03-30 22:32:48,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611f9d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:32:48, skipping insertion in model container [2023-03-30 22:32:48,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:32:48" (3/3) ... [2023-03-30 22:32:48,258 INFO L112 eAbstractionObserver]: Analyzing ICFG mods.c [2023-03-30 22:32:48,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:32:48,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:32:48,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:32:48,299 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;@78e7070, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:32:48,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:32:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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) [2023-03-30 22:32:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-30 22:32:48,306 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:32:48,306 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] [2023-03-30 22:32:48,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:32:48,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:32:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1425380239, now seen corresponding path program 1 times [2023-03-30 22:32:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:32:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488569788] [2023-03-30 22:32:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:32:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:32:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:32:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:32:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:32:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:32:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488569788] [2023-03-30 22:32:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488569788] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:32:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:32:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 22:32:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824895298] [2023-03-30 22:32:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:32:48,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:32:48,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:32:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:32:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:32:48,459 INFO L87 Difference]: Start difference. First operand has 40 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 22:32:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:32:48,525 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2023-03-30 22:32:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:32:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 3 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 26 [2023-03-30 22:32:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:32:48,531 INFO L225 Difference]: With dead ends: 70 [2023-03-30 22:32:48,531 INFO L226 Difference]: Without dead ends: 35 [2023-03-30 22:32:48,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-30 22:32:48,535 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:32:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:32:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-30 22:32:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-03-30 22:32:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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) [2023-03-30 22:32:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-03-30 22:32:48,557 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2023-03-30 22:32:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:32:48,557 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-03-30 22:32:48,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 22:32:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-03-30 22:32:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-30 22:32:48,558 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:32:48,558 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] [2023-03-30 22:32:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:32:48,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:32:48,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:32:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1281239155, now seen corresponding path program 1 times [2023-03-30 22:32:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:32:48,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510966063] [2023-03-30 22:32:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:32:48,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:32:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:32:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-03-30 22:32:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:32:48,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:32:48,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510966063] [2023-03-30 22:32:48,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510966063] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:32:48,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:32:48,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 22:32:48,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298853906] [2023-03-30 22:32:48,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:32:48,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:32:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:32:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:32:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:32:48,711 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:32:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:32:48,792 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2023-03-30 22:32:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 22:32:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-03-30 22:32:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:32:48,795 INFO L225 Difference]: With dead ends: 67 [2023-03-30 22:32:48,795 INFO L226 Difference]: Without dead ends: 47 [2023-03-30 22:32:48,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:32:48,796 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:32:48,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 24 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:32:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-30 22:32:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2023-03-30 22:32:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 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) [2023-03-30 22:32:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-03-30 22:32:48,805 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2023-03-30 22:32:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:32:48,805 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-03-30 22:32:48,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:32:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-03-30 22:32:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-30 22:32:48,806 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:32:48,806 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] [2023-03-30 22:32:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 22:32:48,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:32:48,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:32:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1000164587, now seen corresponding path program 1 times [2023-03-30 22:32:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:32:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708682112] [2023-03-30 22:32:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:32:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:32:48,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:32:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30434873] [2023-03-30 22:32:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:32:48,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:32:48,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:32:48,863 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) [2023-03-30 22:32:48,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:32:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:32:48,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 42 conjunts are in the unsatisfiable core [2023-03-30 22:32:48,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:32:49,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2023-03-30 22:32:49,027 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 [2023-03-30 22:32:49,051 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 [2023-03-30 22:32:49,133 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 35 treesize of output 26 [2023-03-30 22:32:49,203 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 32 treesize of output 23 [2023-03-30 22:32:49,326 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 83 treesize of output 50 [2023-03-30 22:32:49,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 36 treesize of output 16 [2023-03-30 22:32:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:32:49,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:32:51,782 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_50 Int)) (let ((.cse3 (select |c_#memory_int| |c_main_~#sum~0.base|))) (or (= (let ((.cse1 (store |c_#memory_int| |c_main_~#sum~0.base| (store .cse3 |c_main_~#sum~0.offset| v_ArrVal_50)))) (let ((.cse2 (select .cse1 c_main_~a~0.base))) (let ((.cse0 (+ (select .cse2 c_main_~a~0.offset) v_ArrVal_50))) (mod .cse0 (+ (select (select (store .cse1 c_main_~a~0.base (store .cse2 c_main_~a~0.offset .cse0)) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) 1))))) 0) (< v_ArrVal_50 (+ (select .cse3 |c_main_~#sum~0.offset|) (select (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset (* c_main_~i~0 8)))))))) is different from false [2023-03-30 22:33:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-03-30 22:33:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:33:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708682112] [2023-03-30 22:33:06,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:33:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30434873] [2023-03-30 22:33:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30434873] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:33:06,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-30 22:33:06,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-03-30 22:33:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459915801] [2023-03-30 22:33:06,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-30 22:33:06,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-30 22:33:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:33:06,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-30 22:33:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=516, Unknown=3, NotChecked=46, Total=650 [2023-03-30 22:33:06,257 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 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) [2023-03-30 22:33:25,750 WARN L223 SmtUtils]: Spent 16.74s on a formula simplification. DAG size of input: 46 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-03-30 22:33:27,779 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 [] [2023-03-30 22:33:29,802 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 [] [2023-03-30 22:33:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:33:39,254 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2023-03-30 22:33:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-30 22:33:39,254 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 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) Word has length 34 [2023-03-30 22:33:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:33:39,255 INFO L225 Difference]: With dead ends: 87 [2023-03-30 22:33:39,255 INFO L226 Difference]: Without dead ends: 85 [2023-03-30 22:33:39,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=178, Invalid=1083, Unknown=3, NotChecked=68, Total=1332 [2023-03-30 22:33:39,257 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 59 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-03-30 22:33:39,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 379 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 451 Invalid, 2 Unknown, 78 Unchecked, 6.3s Time] [2023-03-30 22:33:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-03-30 22:33:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2023-03-30 22:33:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 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) [2023-03-30 22:33:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2023-03-30 22:33:39,266 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2023-03-30 22:33:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:33:39,266 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2023-03-30 22:33:39,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 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) [2023-03-30 22:33:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2023-03-30 22:33:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-30 22:33:39,267 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:33:39,267 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] [2023-03-30 22:33:39,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 22:33:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:33:39,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:33:39,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:33:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1436713833, now seen corresponding path program 2 times [2023-03-30 22:33:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:33:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140967438] [2023-03-30 22:33:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:33:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:33:39,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:33:39,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805130738] [2023-03-30 22:33:39,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-30 22:33:39,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:33:39,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:33:39,494 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) [2023-03-30 22:33:39,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:33:39,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-30 22:33:39,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:33:39,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:33:39,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:33:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 22:33:39,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:33:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-30 22:33:39,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:33:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140967438] [2023-03-30 22:33:39,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:33:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805130738] [2023-03-30 22:33:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805130738] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:33:39,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-30 22:33:39,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-03-30 22:33:39,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518791014] [2023-03-30 22:33:39,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-30 22:33:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-30 22:33:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:33:39,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-30 22:33:39,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:33:39,666 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2023-03-30 22:33:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:33:39,885 INFO L93 Difference]: Finished difference Result 132 states and 154 transitions. [2023-03-30 22:33:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-30 22:33:39,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 36 [2023-03-30 22:33:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:33:39,887 INFO L225 Difference]: With dead ends: 132 [2023-03-30 22:33:39,888 INFO L226 Difference]: Without dead ends: 96 [2023-03-30 22:33:39,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-03-30 22:33:39,889 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 53 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-30 22:33:39,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 109 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-30 22:33:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-03-30 22:33:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2023-03-30 22:33:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.171875) internal successors, (75), 65 states have internal predecessors, (75), 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) [2023-03-30 22:33:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2023-03-30 22:33:39,899 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 36 [2023-03-30 22:33:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:33:39,900 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2023-03-30 22:33:39,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2023-03-30 22:33:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2023-03-30 22:33:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-03-30 22:33:39,905 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:33:39,905 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] [2023-03-30 22:33:39,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 22:33:40,112 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,SelfDestructingSolverStorable3 [2023-03-30 22:33:40,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:33:40,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:33:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -845745817, now seen corresponding path program 3 times [2023-03-30 22:33:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:33:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676420961] [2023-03-30 22:33:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:33:40,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:33:40,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:33:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907109429] [2023-03-30 22:33:40,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-30 22:33:40,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:33:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:33:40,152 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) [2023-03-30 22:33:40,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:33:40,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-03-30 22:33:40,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:33:40,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:33:40,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:33:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 22:33:40,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:33:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 22:33:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:33:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676420961] [2023-03-30 22:33:40,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:33:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907109429] [2023-03-30 22:33:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907109429] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:33:40,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-30 22:33:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-03-30 22:33:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252096648] [2023-03-30 22:33:40,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-30 22:33:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-30 22:33:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:33:40,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-30 22:33:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:33:40,303 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-03-30 22:33:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:33:40,426 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2023-03-30 22:33:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 22:33:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 38 [2023-03-30 22:33:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:33:40,427 INFO L225 Difference]: With dead ends: 121 [2023-03-30 22:33:40,427 INFO L226 Difference]: Without dead ends: 59 [2023-03-30 22:33:40,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-03-30 22:33:40,428 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:33:40,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 78 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:33:40,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-03-30 22:33:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2023-03-30 22:33:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2023-03-30 22:33:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-03-30 22:33:40,434 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 38 [2023-03-30 22:33:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:33:40,434 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-03-30 22:33:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2023-03-30 22:33:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-03-30 22:33:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-30 22:33:40,435 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:33:40,435 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 22:33:40,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:33:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:33:40,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:33:40,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:33:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 6150499, now seen corresponding path program 4 times [2023-03-30 22:33:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:33:40,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511601698] [2023-03-30 22:33:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:33:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:33:40,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:33:40,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607147948] [2023-03-30 22:33:40,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-30 22:33:40,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:33:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:33:40,674 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) [2023-03-30 22:33:40,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:33:40,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-30 22:33:40,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-30 22:33:40,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 72 conjunts are in the unsatisfiable core [2023-03-30 22:33:40,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:33:40,800 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 [2023-03-30 22:33:40,805 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 [2023-03-30 22:33:40,822 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 21 treesize of output 20 [2023-03-30 22:33:40,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2023-03-30 22:33:41,048 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-30 22:33:41,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 44 [2023-03-30 22:33:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-30 22:33:41,153 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-03-30 22:33:41,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 53 [2023-03-30 22:33:41,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-30 22:33:41,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-30 22:33:41,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-30 22:33:41,410 INFO L321 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2023-03-30 22:33:41,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 59 treesize of output 60 [2023-03-30 22:33:41,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-30 22:33:41,520 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-03-30 22:33:41,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 51 [2023-03-30 22:33:41,630 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-03-30 22:33:41,630 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 [2023-03-30 22:33:41,703 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-30 22:33:41,703 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 [2023-03-30 22:33:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:33:41,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:33:48,600 WARN L839 $PredicateComparison]: unable to prove that (forall ((main_~i~0 Int)) (or (= (let ((.cse10 (let ((.cse11 (* main_~i~0 8))) (store (store (select |c_#memory_int| c_main_~a~0.base) (+ c_main_~a~0.offset .cse11) 1) (+ c_main_~a~0.offset .cse11 8) 1)))) (let ((.cse8 (store |c_#memory_int| c_main_~a~0.base .cse10))) (let ((.cse9 (select .cse8 |c_main_~#sum~0.base|))) (let ((.cse6 (select .cse9 |c_main_~#sum~0.offset|)) (.cse7 (select .cse10 c_main_~a~0.offset)) (.cse3 (+ c_main_~a~0.offset 8))) (let ((.cse5 (select (select (store .cse8 |c_main_~#sum~0.base| (store .cse9 |c_main_~#sum~0.offset| (+ .cse6 .cse7))) c_main_~a~0.base) .cse3))) (let ((.cse1 (store .cse8 |c_main_~#sum~0.base| (store .cse9 |c_main_~#sum~0.offset| (+ .cse5 .cse6 .cse7))))) (let ((.cse4 (select .cse1 c_main_~a~0.base))) (let ((.cse0 (+ .cse5 .cse6 (select .cse4 c_main_~a~0.offset) .cse7))) (mod .cse0 (+ (select (select (store .cse1 c_main_~a~0.base (let ((.cse2 (store .cse4 c_main_~a~0.offset .cse0))) (store .cse2 .cse3 (+ (select (select (store .cse1 c_main_~a~0.base .cse2) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) (select .cse4 .cse3))))) |c_main_~#sum~0.base|) |c_main_~#sum~0.offset|) 1)))))))))) 0) (< 0 main_~i~0) (< main_~i~0 0))) is different from false [2023-03-30 22:33:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-03-30 22:33:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:33:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511601698] [2023-03-30 22:33:48,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:33:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607147948] [2023-03-30 22:33:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607147948] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:33:48,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-30 22:33:48,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2023-03-30 22:33:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025344666] [2023-03-30 22:33:48,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-30 22:33:48,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-03-30 22:33:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:33:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-03-30 22:33:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1987, Unknown=1, NotChecked=92, Total=2352 [2023-03-30 22:33:48,640 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 49 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 47 states have internal predecessors, (64), 2 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) [2023-03-30 22:34:00,744 WARN L223 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 129 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)