/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-u_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:36:55,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:36:55,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:36:55,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:36:55,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:36:55,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:36:55,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:36:55,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:36:55,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:36:55,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:36:55,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:36:55,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:36:55,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:36:55,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:36:55,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:36:55,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:36:55,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:36:55,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:36:55,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:36:55,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:36:55,551 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 00:36:55,576 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:36:55,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:36:55,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:36:55,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:36:55,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:36:55,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:36:55,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:36:55,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:36:55,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:36:55,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:55,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:36:55,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:36:55,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:36:55,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:36:55,580 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:36:55,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:36:55,580 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:36:55,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:36:55,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:36:55,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:36:55,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:36:55,758 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:36:55,758 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:36:55,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2023-03-31 00:36:56,896 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:36:57,047 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:36:57,048 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2023-03-31 00:36:57,053 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9816b0e/e037d042084b424f91fd23758a10718d/FLAGcd9480fa4 [2023-03-31 00:36:57,063 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f9816b0e/e037d042084b424f91fd23758a10718d [2023-03-31 00:36:57,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:36:57,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:36:57,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:57,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:36:57,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:36:57,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cd8be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57, skipping insertion in model container [2023-03-31 00:36:57,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:36:57,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:36:57,179 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-u_valuebound100.c[555,568] [2023-03-31 00:36:57,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:57,199 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:36:57,207 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-u_valuebound100.c[555,568] [2023-03-31 00:36:57,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:36:57,218 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:36:57,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57 WrapperNode [2023-03-31 00:36:57,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:36:57,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:36:57,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:36:57,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:36:57,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:36:57,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:36:57,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:36:57,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:36:57,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (1/1) ... [2023-03-31 00:36:57,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:36:57,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:57,258 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 00:36:57,263 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 00:36:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:36:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:36:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:36:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 00:36:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:36:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:36:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:36:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:36:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:36:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:36:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 00:36:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:36:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:36:57,377 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:36:57,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:36:57,490 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:36:57,495 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:36:57,495 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:36:57,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:57 BoogieIcfgContainer [2023-03-31 00:36:57,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:36:57,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:36:57,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:36:57,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:36:57,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:36:57" (1/3) ... [2023-03-31 00:36:57,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eddfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:57, skipping insertion in model container [2023-03-31 00:36:57,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:36:57" (2/3) ... [2023-03-31 00:36:57,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eddfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:36:57, skipping insertion in model container [2023-03-31 00:36:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:36:57" (3/3) ... [2023-03-31 00:36:57,503 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound100.c [2023-03-31 00:36:57,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:36:57,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:36:57,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:36:57,551 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;@4b2c716d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:36:57,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:36:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:36:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-03-31 00:36:57,559 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:57,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:57,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:57,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 1 times [2023-03-31 00:36:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55643154] [2023-03-31 00:36:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:57,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55643154] [2023-03-31 00:36:57,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 00:36:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633421869] [2023-03-31 00:36:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:57,671 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 00:36:57,672 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 00:36:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:57,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-03-31 00:36:57,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 00:36:57,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:36:57,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633421869] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:36:57,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:36:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 00:36:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226648577] [2023-03-31 00:36:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:36:57,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 00:36:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 00:36:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 00:36:57,824 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:36:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:57,854 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2023-03-31 00:36:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 00:36:57,855 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-03-31 00:36:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:57,860 INFO L225 Difference]: With dead ends: 53 [2023-03-31 00:36:57,860 INFO L226 Difference]: Without dead ends: 25 [2023-03-31 00:36:57,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 00:36:57,865 INFO L413 NwaCegarLoop]: 32 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, 32 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 00:36:57,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:36:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-03-31 00:36:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-03-31 00:36:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:36:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-03-31 00:36:57,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2023-03-31 00:36:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-03-31 00:36:57,911 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:36:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-03-31 00:36:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-03-31 00:36:57,916 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:57,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:36:57,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:36:58,122 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 00:36:58,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:58,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 1 times [2023-03-31 00:36:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556890149] [2023-03-31 00:36:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:58,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 00:36:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003566751] [2023-03-31 00:36:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:58,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:58,175 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 00:36:58,178 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 00:36:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:36:58,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 00:36:58,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:36:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:36:58,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 00:36:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:36:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556890149] [2023-03-31 00:36:58,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 00:36:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003566751] [2023-03-31 00:36:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003566751] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:36:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:36:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 00:36:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276311893] [2023-03-31 00:36:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:36:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:36:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:36:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:36:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:36:58,338 INFO L87 Difference]: Start difference. First operand 25 states and 27 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:36:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:36:58,420 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-03-31 00:36:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:36:58,422 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-03-31 00:36:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:36:58,424 INFO L225 Difference]: With dead ends: 35 [2023-03-31 00:36:58,424 INFO L226 Difference]: Without dead ends: 33 [2023-03-31 00:36:58,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 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 00:36:58,427 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:36:58,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:36:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-31 00:36:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-03-31 00:36:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 00:36:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-03-31 00:36:58,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2023-03-31 00:36:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:36:58,435 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-03-31 00:36:58,435 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 00:36:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-03-31 00:36:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 00:36:58,436 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:36:58,436 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 00:36:58,455 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 00:36:58,637 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 00:36:58,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:36:58,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:36:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 1 times [2023-03-31 00:36:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:36:58,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417509070] [2023-03-31 00:36:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:58,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:36:58,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 00:36:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699864698] [2023-03-31 00:36:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:36:58,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:36:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:36:58,672 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 00:36:58,673 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 00:36:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:36:58,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:36:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:36:58,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:36:58,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:36:58,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:36:58,775 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 00:36:58,975 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 00:36:58,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 00:36:58,982 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:36:59,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:36:59 BoogieIcfgContainer [2023-03-31 00:36:59,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:36:59,006 INFO L158 Benchmark]: Toolchain (without parser) took 1937.33ms. Allocated memory is still 276.8MB. Free memory was 228.6MB in the beginning and 226.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.8MB. Max. memory is 8.0GB. [2023-03-31 00:36:59,011 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:36:59,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.35ms. Allocated memory is still 276.8MB. Free memory was 228.6MB in the beginning and 218.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:59,013 INFO L158 Benchmark]: Boogie Preprocessor took 17.38ms. Allocated memory is still 276.8MB. Free memory was 218.0MB in the beginning and 216.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:36:59,013 INFO L158 Benchmark]: RCFGBuilder took 259.57ms. Allocated memory is still 276.8MB. Free memory was 216.6MB in the beginning and 205.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 00:36:59,014 INFO L158 Benchmark]: TraceAbstraction took 1505.65ms. Allocated memory is still 276.8MB. Free memory was 204.4MB in the beginning and 226.8MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:36:59,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.35ms. Allocated memory is still 276.8MB. Free memory was 228.6MB in the beginning and 218.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.38ms. Allocated memory is still 276.8MB. Free memory was 218.0MB in the beginning and 216.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 259.57ms. Allocated memory is still 276.8MB. Free memory was 216.6MB in the beginning and 205.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1505.65ms. Allocated memory is still 276.8MB. Free memory was 204.4MB in the beginning and 226.8MB in the end (delta: -22.3MB). 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=100) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L26] RET assume_abort_if_not(z>=0 && z<=100) VAL [z=4294967296] [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=100) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(k>=0 && k<=100) VAL [k=1, z=4294967296] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=1, x=1, y=0, z=4294967296] [L34] COND TRUE 1 VAL [c=1, k=1, x=1, y=0, z=4294967296] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=1, x=1, y=0, z=4294967296] [L37] COND TRUE !(c < k) VAL [c=1, k=1, x=1, y=0, z=4294967296] [L46] x = x * (z - 1) VAL [c=1, k=1, x=4294967295, y=0, z=4294967296] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 51 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 3 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 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 RESULT: Ultimate proved your program to be incorrect! [2023-03-31 00:36:59,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...