/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:19:26,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:19:26,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:19:26,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 23:19:26,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 23:19:26,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 23:19:26,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 23:19:26,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 23:19:26,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 23:19:26,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 23:19:26,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 23:19:26,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 23:19:26,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 23:19:26,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 23:19:26,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 23:19:26,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 23:19:26,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 23:19:26,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 23:19:26,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 23:19:26,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 23:19:26,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 23:19:26,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 23:19:26,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 23:19:26,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 23:19:26,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 23:19:26,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:19:26,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:19:26,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:19:26,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:19:26,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:19:26,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:19:26,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:19:26,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:19:26,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:19:26,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:19:26,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:19:26,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:19:26,422 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:19:26,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:19:26,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:19:26,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:19:26,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:19:26,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:19:26,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:19:26,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:19:26,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:19:26,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:19:26,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:19:26,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:19:26,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:19:26,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:19:26,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:19:26,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:19:26,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:19:26,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:19:26,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:19:26,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:19:26,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:19:26,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:19:26,705 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:19:26,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2022-01-09 23:19:26,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807dabbd6/4f440f10deef43ad898b4333a7661f99/FLAG430bfc9b5 [2022-01-09 23:19:27,112 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:19:27,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c [2022-01-09 23:19:27,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807dabbd6/4f440f10deef43ad898b4333a7661f99/FLAG430bfc9b5 [2022-01-09 23:19:27,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807dabbd6/4f440f10deef43ad898b4333a7661f99 [2022-01-09 23:19:27,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:19:27,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:19:27,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:19:27,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:19:27,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:19:27,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f53856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27, skipping insertion in model container [2022-01-09 23:19:27,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:19:27,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:19:27,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c[589,602] [2022-01-09 23:19:27,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:19:27,730 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:19:27,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c[589,602] [2022-01-09 23:19:27,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:19:27,784 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:19:27,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27 WrapperNode [2022-01-09 23:19:27,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:19:27,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:19:27,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:19:27,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:19:27,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,831 INFO L137 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-01-09 23:19:27,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:19:27,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:19:27,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:19:27,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:19:27,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:19:27,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:19:27,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:19:27,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:19:27,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (1/1) ... [2022-01-09 23:19:27,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:19:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:19:27,904 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) [2022-01-09 23:19:27,931 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 [2022-01-09 23:19:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:19:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:19:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:19:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:19:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-09 23:19:27,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:19:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:19:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:19:27,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:19:28,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:19:28,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:19:28,209 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:19:28,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:19:28,214 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-09 23:19:28,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:19:28 BoogieIcfgContainer [2022-01-09 23:19:28,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:19:28,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:19:28,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:19:28,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:19:28,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:19:27" (1/3) ... [2022-01-09 23:19:28,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16121ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:19:28, skipping insertion in model container [2022-01-09 23:19:28,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:19:27" (2/3) ... [2022-01-09 23:19:28,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16121ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:19:28, skipping insertion in model container [2022-01-09 23:19:28,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:19:28" (3/3) ... [2022-01-09 23:19:28,246 INFO L111 eAbstractionObserver]: Analyzing ICFG condaf.c [2022-01-09 23:19:28,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:19:28,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:19:28,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:19:28,294 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:19:28,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:19:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-09 23:19:28,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:19:28,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:19:28,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:19:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:19:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2022-01-09 23:19:28,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:19:28,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149622016] [2022-01-09 23:19:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:19:28,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:19:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:19:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:19:28,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:19:28,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149622016] [2022-01-09 23:19:28,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149622016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:19:28,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:19:28,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:19:28,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629765484] [2022-01-09 23:19:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:19:28,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:19:28,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:19:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:19:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:19:28,482 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:19:28,499 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-01-09 23:19:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:19:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-09 23:19:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:19:28,507 INFO L225 Difference]: With dead ends: 40 [2022-01-09 23:19:28,508 INFO L226 Difference]: Without dead ends: 18 [2022-01-09 23:19:28,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:19:28,514 INFO L933 BasicCegarLoop]: 26 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, 26 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 [2022-01-09 23:19:28,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:19:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-09 23:19:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-09 23:19:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-01-09 23:19:28,547 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2022-01-09 23:19:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:19:28,548 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-01-09 23:19:28,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-01-09 23:19:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-09 23:19:28,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:19:28,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:19:28,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:19:28,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:19:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:19:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2022-01-09 23:19:28,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:19:28,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882493832] [2022-01-09 23:19:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:19:28,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:19:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:19:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:19:28,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:19:28,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882493832] [2022-01-09 23:19:28,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882493832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:19:28,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:19:28,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:19:28,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615504353] [2022-01-09 23:19:28,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:19:28,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:19:28,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:19:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:19:28,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:19:28,638 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:19:28,687 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-01-09 23:19:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:19:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-09 23:19:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:19:28,688 INFO L225 Difference]: With dead ends: 36 [2022-01-09 23:19:28,688 INFO L226 Difference]: Without dead ends: 25 [2022-01-09 23:19:28,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:19:28,690 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:19:28,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:19:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-09 23:19:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-01-09 23:19:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-01-09 23:19:28,696 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2022-01-09 23:19:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:19:28,696 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-01-09 23:19:28,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-01-09 23:19:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-09 23:19:28,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:19:28,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:19:28,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:19:28,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:19:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:19:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2022-01-09 23:19:28,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:19:28,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717637588] [2022-01-09 23:19:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:19:28,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:19:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:19:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:19:29,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:19:29,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717637588] [2022-01-09 23:19:29,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717637588] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:19:29,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927410068] [2022-01-09 23:19:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:19:29,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:19:29,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:19:29,287 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) [2022-01-09 23:19:29,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:19:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:19:29,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-09 23:19:29,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:19:29,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 [2022-01-09 23:19:29,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-09 23:19:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:19:29,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:19:29,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-01-09 23:19:29,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-09 23:19:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:19:29,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927410068] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:19:29,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:19:29,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 18 [2022-01-09 23:19:29,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096434044] [2022-01-09 23:19:29,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:19:29,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:19:29,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:19:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:19:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:19:29,710 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:19:30,192 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-01-09 23:19:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-09 23:19:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-09 23:19:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:19:30,194 INFO L225 Difference]: With dead ends: 41 [2022-01-09 23:19:30,194 INFO L226 Difference]: Without dead ends: 30 [2022-01-09 23:19:30,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2022-01-09 23:19:30,196 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:19:30,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:19:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-09 23:19:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2022-01-09 23:19:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-09 23:19:30,202 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 20 [2022-01-09 23:19:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:19:30,202 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-09 23:19:30,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:19:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-09 23:19:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-09 23:19:30,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:19:30,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:19:30,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:19:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:19:30,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:19:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:19:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2022-01-09 23:19:30,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:19:30,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025508701] [2022-01-09 23:19:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:19:30,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:19:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 23:19:30,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 23:19:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 23:19:30,489 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 23:19:30,489 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 23:19:30,492 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 23:19:30,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:19:30,498 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-09 23:19:30,501 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 23:19:30,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 11:19:30 BoogieIcfgContainer [2022-01-09 23:19:30,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 23:19:30,561 INFO L158 Benchmark]: Toolchain (without parser) took 3035.72ms. Allocated memory was 190.8MB in the beginning and 287.3MB in the end (delta: 96.5MB). Free memory was 134.0MB in the beginning and 258.3MB in the end (delta: -124.3MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,561 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 23:19:30,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.78ms. Allocated memory was 190.8MB in the beginning and 287.3MB in the end (delta: 96.5MB). Free memory was 133.8MB in the beginning and 257.6MB in the end (delta: -123.8MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.88ms. Allocated memory is still 287.3MB. Free memory was 257.6MB in the beginning and 256.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,562 INFO L158 Benchmark]: Boogie Preprocessor took 42.14ms. Allocated memory is still 287.3MB. Free memory was 256.1MB in the beginning and 254.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,563 INFO L158 Benchmark]: RCFGBuilder took 353.77ms. Allocated memory is still 287.3MB. Free memory was 254.5MB in the beginning and 242.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,564 INFO L158 Benchmark]: TraceAbstraction took 2329.47ms. Allocated memory is still 287.3MB. Free memory was 242.4MB in the beginning and 258.3MB in the end (delta: -15.9MB). Peak memory consumption was 120.2MB. Max. memory is 8.0GB. [2022-01-09 23:19:30,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.78ms. Allocated memory was 190.8MB in the beginning and 287.3MB in the end (delta: 96.5MB). Free memory was 133.8MB in the beginning and 257.6MB in the end (delta: -123.8MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.88ms. Allocated memory is still 287.3MB. Free memory was 257.6MB in the beginning and 256.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.14ms. Allocated memory is still 287.3MB. Free memory was 256.1MB in the beginning and 254.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 353.77ms. Allocated memory is still 287.3MB. Free memory was 254.5MB in the beginning and 242.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2329.47ms. Allocated memory is still 287.3MB. Free memory was 242.4MB in the beginning and 258.3MB in the end (delta: -15.9MB). Peak memory consumption was 120.2MB. 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] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [a={-2:0}, i=0, N=1, sum={5:0}] [L32] COND TRUE i