/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:48:29,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:48:29,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:48:30,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 19:48:30,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 19:48:30,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 19:48:30,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 19:48:30,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 19:48:30,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 19:48:30,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 19:48:30,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 19:48:30,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 19:48:30,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 19:48:30,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 19:48:30,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 19:48:30,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 19:48:30,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 19:48:30,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 19:48:30,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 19:48:30,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 19:48:30,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 19:48:30,090 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:48:30,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:48:30,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:48:30,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:48:30,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:48:30,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:48:30,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:48:30,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:48:30,092 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:48:30,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:48:30,093 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:48:30,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:48:30,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:48:30,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:48:30,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:48:30,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:48:30,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:48:30,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:48:30,095 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:48:30,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:48:30,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:48:30,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:48:30,318 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:48:30,319 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:48:30,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condgf.c [2023-04-01 19:48:31,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:48:31,596 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:48:31,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condgf.c [2023-04-01 19:48:31,602 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eac3b259/2c017e6d310c446da6c3d0b79532f963/FLAG9f3d9bc3c [2023-04-01 19:48:31,615 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eac3b259/2c017e6d310c446da6c3d0b79532f963 [2023-04-01 19:48:31,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:48:31,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:48:31,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:48:31,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:48:31,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:48:31,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1faf835d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31, skipping insertion in model container [2023-04-01 19:48:31,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:48:31,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:48:31,755 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2023-04-01 19:48:31,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:48:31,782 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:48:31,791 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2023-04-01 19:48:31,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:48:31,816 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:48:31,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31 WrapperNode [2023-04-01 19:48:31,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:48:31,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:48:31,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:48:31,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:48:31,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:48:31,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:48:31,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:48:31,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:48:31,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (1/1) ... [2023-04-01 19:48:31,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:48:31,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:31,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 19:48:31,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 19:48:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:48:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:48:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:48:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:48:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:48:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 19:48:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:48:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:48:31,968 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:48:31,970 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:48:32,089 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:48:32,093 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:48:32,093 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 19:48:32,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:48:32 BoogieIcfgContainer [2023-04-01 19:48:32,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:48:32,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:48:32,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:48:32,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:48:32,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:48:31" (1/3) ... [2023-04-01 19:48:32,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9bcbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:48:32, skipping insertion in model container [2023-04-01 19:48:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:31" (2/3) ... [2023-04-01 19:48:32,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9bcbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:48:32, skipping insertion in model container [2023-04-01 19:48:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:48:32" (3/3) ... [2023-04-01 19:48:32,100 INFO L112 eAbstractionObserver]: Analyzing ICFG condgf.c [2023-04-01 19:48:32,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:48:32,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:48:32,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:48:32,154 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;@5af0c7b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:48:32,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:48:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 29 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:48:32,163 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:32,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:32,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:32,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:32,168 INFO L85 PathProgramCache]: Analyzing trace with hash 889499042, now seen corresponding path program 1 times [2023-04-01 19:48:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842881979] [2023-04-01 19:48:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:48:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:48:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842881979] [2023-04-01 19:48:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842881979] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:32,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 19:48:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787213973] [2023-04-01 19:48:32,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 19:48:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 19:48:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:48:32,437 INFO L87 Difference]: Start difference. First operand has 38 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 29 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:32,547 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2023-04-01 19:48:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 19:48:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-04-01 19:48:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:32,554 INFO L225 Difference]: With dead ends: 66 [2023-04-01 19:48:32,555 INFO L226 Difference]: Without dead ends: 33 [2023-04-01 19:48:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 19:48:32,562 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:32,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:48:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-01 19:48:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-01 19:48:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 19:48:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-04-01 19:48:32,603 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2023-04-01 19:48:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:32,604 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-04-01 19:48:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-04-01 19:48:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:48:32,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:32,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:32,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 19:48:32,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:32,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash -390364636, now seen corresponding path program 1 times [2023-04-01 19:48:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937785671] [2023-04-01 19:48:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:48:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:48:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937785671] [2023-04-01 19:48:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937785671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:32,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:48:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601787394] [2023-04-01 19:48:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:32,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:48:32,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:48:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:48:32,809 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:48:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:32,930 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-04-01 19:48:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 19:48:32,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-04-01 19:48:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:32,932 INFO L225 Difference]: With dead ends: 62 [2023-04-01 19:48:32,933 INFO L226 Difference]: Without dead ends: 44 [2023-04-01 19:48:32,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:48:32,934 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:32,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 19 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:48:32,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-01 19:48:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2023-04-01 19:48:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 19:48:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-04-01 19:48:32,942 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2023-04-01 19:48:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:32,943 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-04-01 19:48:32,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 19:48:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-04-01 19:48:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 19:48:32,945 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:32,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 19:48:32,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:32,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1893085318, now seen corresponding path program 1 times [2023-04-01 19:48:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160700525] [2023-04-01 19:48:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 19:48:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-01 19:48:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:33,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160700525] [2023-04-01 19:48:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160700525] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 19:48:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465478306] [2023-04-01 19:48:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:33,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:33,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:33,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 19:48:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 19:48:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:33,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-01 19:48:33,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:33,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-01 19:48:33,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:48:33,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 19:48:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:48:33,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2023-04-01 19:48:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:48:34,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-04-01 19:48:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:34,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:48:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465478306] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:48:34,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 19:48:34,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 19:48:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627445717] [2023-04-01 19:48:34,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 19:48:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 19:48:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 19:48:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-04-01 19:48:34,329 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:35,111 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2023-04-01 19:48:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 19:48:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-04-01 19:48:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:35,113 INFO L225 Difference]: With dead ends: 79 [2023-04-01 19:48:35,113 INFO L226 Difference]: Without dead ends: 65 [2023-04-01 19:48:35,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 19:48:35,115 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:35,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 153 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 19:48:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-04-01 19:48:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2023-04-01 19:48:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 19:48:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-04-01 19:48:35,122 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 31 [2023-04-01 19:48:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:35,123 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-04-01 19:48:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 24 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-04-01 19:48:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 19:48:35,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:35,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:35,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 19:48:35,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:35,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:35,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1721823608, now seen corresponding path program 1 times [2023-04-01 19:48:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:35,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135607704] [2023-04-01 19:48:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 19:48:35,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 19:48:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 19:48:35,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-01 19:48:35,382 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 19:48:35,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 19:48:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 19:48:35,388 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-01 19:48:35,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 19:48:35,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 07:48:35 BoogieIcfgContainer [2023-04-01 19:48:35,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 19:48:35,422 INFO L158 Benchmark]: Toolchain (without parser) took 3803.98ms. Allocated memory is still 328.2MB. Free memory was 292.3MB in the beginning and 117.7MB in the end (delta: 174.6MB). Peak memory consumption was 175.6MB. Max. memory is 8.0GB. [2023-04-01 19:48:35,422 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 223.3MB. Free memory is still 172.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 19:48:35,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.04ms. Allocated memory is still 328.2MB. Free memory was 291.7MB in the beginning and 281.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 19:48:35,423 INFO L158 Benchmark]: Boogie Preprocessor took 37.94ms. Allocated memory is still 328.2MB. Free memory was 281.2MB in the beginning and 279.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 19:48:35,423 INFO L158 Benchmark]: RCFGBuilder took 238.76ms. Allocated memory is still 328.2MB. Free memory was 279.7MB in the beginning and 266.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 19:48:35,423 INFO L158 Benchmark]: TraceAbstraction took 3325.58ms. Allocated memory is still 328.2MB. Free memory was 265.5MB in the beginning and 117.7MB in the end (delta: 147.8MB). Peak memory consumption was 148.4MB. Max. memory is 8.0GB. [2023-04-01 19:48:35,424 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 223.3MB. Free memory is still 172.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.04ms. Allocated memory is still 328.2MB. Free memory was 291.7MB in the beginning and 281.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.94ms. Allocated memory is still 328.2MB. Free memory was 281.2MB in the beginning and 279.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.76ms. Allocated memory is still 328.2MB. Free memory was 279.7MB in the beginning and 266.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3325.58ms. Allocated memory is still 328.2MB. Free memory was 265.5MB in the beginning and 117.7MB in the end (delta: 147.8MB). Peak memory consumption was 148.4MB. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0, \old(N)=51] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [N=1, \old(N)=0] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=1, \old(N)=0, \old(cond)=1] [L13] COND FALSE !(!cond) VAL [N=1, \old(N)=0, \old(cond)=1, cond=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=1, \old(N)=0] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1, \old(N)=0, a={-1:0}, i=0, sum={5:0}] [L32] COND TRUE i