/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:36:50,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:36:50,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:36:50,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:36:50,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:36:50,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:36:50,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:36:50,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:36:50,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:36:50,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:36:50,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:36:50,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:36:50,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:36:50,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:36:50,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:36:50,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:36:50,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:36:50,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:36:50,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:36:50,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:36:50,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:36:50,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:36:50,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:36:50,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:36:50,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:36:50,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:36:50,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:36:50,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:36:50,553 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 [2023-03-31 00:36:50,571 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:36:50,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:36:50,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:36:50,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:36:50,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:36:50,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:36:50,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:36:50,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:36:50,573 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:36:50,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:36:50,573 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:36:50,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:36:50,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:36:50,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:50,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:36:50,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:36:50,576 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:36:50,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:36:50,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:36:50,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:36:50,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:36:50,796 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:36:50,797 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:36:50,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2023-03-31 00:36:51,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:36:52,142 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:36:52,142 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2023-03-31 00:36:52,150 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9977e315/a9cd94bd30e74255aeab2d9c511e494a/FLAGe7a02e557 [2023-03-31 00:36:52,169 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9977e315/a9cd94bd30e74255aeab2d9c511e494a [2023-03-31 00:36:52,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:36:52,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:36:52,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:52,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:36:52,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:36:52,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667337a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52, skipping insertion in model container [2023-03-31 00:36:52,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:36:52,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:36:52,314 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2023-03-31 00:36:52,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:52,336 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:36:52,348 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] [2023-03-31 00:36:52,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:52,373 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:36:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52 WrapperNode [2023-03-31 00:36:52,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:52,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:36:52,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:36:52,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:36:52,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:36:52,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:36:52,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:36:52,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:36:52,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (1/1) ... [2023-03-31 00:36:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:52,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:52,446 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) [2023-03-31 00:36:52,464 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 [2023-03-31 00:36:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:36:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:36:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:36:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 00:36:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:36:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:36:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:36:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:36:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:36:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:36:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:36:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:36:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:36:52,584 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:36:52,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:36:52,682 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:36:52,687 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:36:52,687 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:36:52,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:52 BoogieIcfgContainer [2023-03-31 00:36:52,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:36:52,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:36:52,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:36:52,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:36:52,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:36:52" (1/3) ... [2023-03-31 00:36:52,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adf3e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:52, skipping insertion in model container [2023-03-31 00:36:52,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:52" (2/3) ... [2023-03-31 00:36:52,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adf3e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:52, skipping insertion in model container [2023-03-31 00:36:52,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:52" (3/3) ... [2023-03-31 00:36:52,696 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2023-03-31 00:36:52,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:36:52,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:36:52,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:36:52,807 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;@7e1965c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:36:52,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:36:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 00:36:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-03-31 00:36:52,822 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:52,823 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:52,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:52,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2023-03-31 00:36:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259244503] [2023-03-31 00:36:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:52,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:52,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259244503] [2023-03-31 00:36:52,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 00:36:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819571862] [2023-03-31 00:36:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:52,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:52,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:52,986 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) [2023-03-31 00:36:53,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:36:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:53,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2023-03-31 00:36:53,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 00:36:53,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:36:53,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819571862] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:36:53,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:36:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 00:36:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122883482] [2023-03-31 00:36:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:36:53,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 00:36:53,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 00:36:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 00:36:53,147 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:36:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:53,175 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2023-03-31 00:36:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 00:36:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-03-31 00:36:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:53,185 INFO L225 Difference]: With dead ends: 57 [2023-03-31 00:36:53,185 INFO L226 Difference]: Without dead ends: 27 [2023-03-31 00:36:53,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 00:36:53,191 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2023-03-31 00:36:53,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:36:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-03-31 00:36:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-03-31 00:36:53,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:36:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-03-31 00:36:53,222 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2023-03-31 00:36:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-03-31 00:36:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:36:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-03-31 00:36:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-03-31 00:36:53,226 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:53,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:53,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:36:53,427 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 [2023-03-31 00:36:53,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:53,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:53,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2023-03-31 00:36:53,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258401700] [2023-03-31 00:36:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:53,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:53,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 00:36:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672621360] [2023-03-31 00:36:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:53,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:53,453 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) [2023-03-31 00:36:53,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:36:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:53,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 00:36:53,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 00:36:53,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:36:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:53,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258401700] [2023-03-31 00:36:53,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 00:36:53,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672621360] [2023-03-31 00:36:53,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672621360] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:36:53,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:36:53,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 00:36:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690684439] [2023-03-31 00:36:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:36:53,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:36:53,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:36:53,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:36:53,640 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-03-31 00:36:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:53,764 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-03-31 00:36:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:36:53,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2023-03-31 00:36:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:53,766 INFO L225 Difference]: With dead ends: 37 [2023-03-31 00:36:53,767 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 00:36:53,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:36:53,768 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:36:53,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:36:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 00:36:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-03-31 00:36:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:36:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-03-31 00:36:53,777 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2023-03-31 00:36:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:53,778 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-03-31 00:36:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-03-31 00:36:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-03-31 00:36:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-03-31 00:36:53,780 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:53,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:53,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 00:36:53,986 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 [2023-03-31 00:36:53,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:53,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1493430927, now seen corresponding path program 1 times [2023-03-31 00:36:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:53,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924515302] [2023-03-31 00:36:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:53,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:54,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 00:36:54,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525965069] [2023-03-31 00:36:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:54,017 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) [2023-03-31 00:36:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:36:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:54,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-31 00:36:54,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 00:36:54,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:36:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 00:36:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924515302] [2023-03-31 00:36:54,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 00:36:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525965069] [2023-03-31 00:36:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525965069] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:36:54,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:36:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-03-31 00:36:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366479445] [2023-03-31 00:36:54,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 00:36:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 00:36:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 00:36:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 00:36:54,353 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 00:36:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:54,700 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-03-31 00:36:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:36:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2023-03-31 00:36:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:54,702 INFO L225 Difference]: With dead ends: 33 [2023-03-31 00:36:54,702 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 00:36:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:36:54,703 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:36:54,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:36:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 00:36:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 00:36:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 00:36:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 00:36:54,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-03-31 00:36:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 00:36:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 00:36:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 00:36:54,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 00:36:54,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:36:54,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 00:36:54,911 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 [2023-03-31 00:36:54,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 00:36:54,993 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 9) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 14) the Hoare annotation is: true [2023-03-31 00:36:54,994 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2023-03-31 00:36:54,994 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2023-03-31 00:36:54,995 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 52) no Hoare annotation was computed. [2023-03-31 00:36:54,995 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (= (+ main_~x~0 1) main_~y~0) [2023-03-31 00:36:54,995 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-03-31 00:36:54,995 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 22 52) no Hoare annotation was computed. [2023-03-31 00:36:54,995 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 52) the Hoare annotation is: true [2023-03-31 00:36:54,995 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 46) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2023-03-31 00:36:54,995 INFO L899 garLoopResultBuilder]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2023-03-31 00:36:54,996 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-03-31 00:36:54,996 INFO L902 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2023-03-31 00:36:54,996 INFO L902 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: true [2023-03-31 00:36:54,996 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2023-03-31 00:36:54,996 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-03-31 00:36:54,996 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) [2023-03-31 00:36:54,996 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 36 46) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2023-03-31 00:36:54,997 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2023-03-31 00:36:54,998 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2023-03-31 00:36:54,998 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2023-03-31 00:36:54,998 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 21) the Hoare annotation is: true [2023-03-31 00:36:54,998 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2023-03-31 00:36:55,003 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 00:36:55,005 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:36:55,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:36:55 BoogieIcfgContainer [2023-03-31 00:36:55,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:36:55,022 INFO L158 Benchmark]: Toolchain (without parser) took 2850.08ms. Allocated memory is still 282.1MB. Free memory was 243.3MB in the beginning and 233.0MB in the end (delta: 10.3MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2023-03-31 00:36:55,022 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:36:55,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.77ms. Allocated memory is still 282.1MB. Free memory was 243.3MB in the beginning and 233.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:55,027 INFO L158 Benchmark]: Boogie Preprocessor took 37.69ms. Allocated memory is still 282.1MB. Free memory was 233.0MB in the beginning and 231.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:36:55,027 INFO L158 Benchmark]: RCFGBuilder took 275.04ms. Allocated memory is still 282.1MB. Free memory was 231.4MB in the beginning and 220.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:55,028 INFO L158 Benchmark]: TraceAbstraction took 2330.94ms. Allocated memory is still 282.1MB. Free memory was 219.9MB in the beginning and 233.0MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:36:55,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.77ms. Allocated memory is still 282.1MB. Free memory was 243.3MB in the beginning and 233.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.69ms. Allocated memory is still 282.1MB. Free memory was 233.0MB in the beginning and 231.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 275.04ms. Allocated memory is still 282.1MB. Free memory was 231.4MB in the beginning and 220.4MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2330.94ms. Allocated memory is still 282.1MB. Free memory was 219.9MB in the beginning and 233.0MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 81 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 31 NumberOfFragments, 33 HoareAnnotationTreeSize, 23 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 142 ConstructedInterpolants, 1 QuantifiedInterpolants, 250 SizeOfPredicates, 6 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: z * x + 1 == y + x RESULT: Ultimate proved your program to be correct! [2023-03-31 00:36:55,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...