/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/array-patterns/array14_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:12:41,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:12:41,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:12:42,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:12:42,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:12:42,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:12:42,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:12:42,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:12:42,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:12:42,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:12:42,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:12:42,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:12:42,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:12:42,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:12:42,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:12:42,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:12:42,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:12:42,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:12:42,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:12:42,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:12:42,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:12:42,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:12:42,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:12:42,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:12:42,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:12:42,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:12:42,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:12:42,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:12:42,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:12:42,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:12:42,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:42,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:12:42,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:12:42,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:12:42,097 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:12:42,097 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:12:42,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:12:42,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:12:42,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:12:42,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:12:42,315 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:12:42,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array14_pattern.c [2022-01-31 23:12:42,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed620663/868cee76a458463190575fd9384b6d28/FLAG3036d5a7d [2022-01-31 23:12:42,665 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:12:42,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array14_pattern.c [2022-01-31 23:12:42,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed620663/868cee76a458463190575fd9384b6d28/FLAG3036d5a7d [2022-01-31 23:12:42,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed620663/868cee76a458463190575fd9384b6d28 [2022-01-31 23:12:42,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:12:42,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:12:42,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:42,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:12:42,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:12:42,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219c67ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42, skipping insertion in model container [2022-01-31 23:12:42,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:12:42,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:12:42,891 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-patterns/array14_pattern.c[1285,1298] [2022-01-31 23:12:42,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:42,921 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:12:42,931 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-patterns/array14_pattern.c[1285,1298] [2022-01-31 23:12:42,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:42,960 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:12:42,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42 WrapperNode [2022-01-31 23:12:42,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:42,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:12:42,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:12:42,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:12:42,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:42,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:12:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:12:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:12:43,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:12:43,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (1/1) ... [2022-01-31 23:12:43,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:12:43,037 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) [2022-01-31 23:12:43,055 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 [2022-01-31 23:12:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:12:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:12:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:12:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:12:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:12:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:12:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:12:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:12:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:12:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:12:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:12:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:12:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:12:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:12:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:12:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:12:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:12:43,140 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:12:43,141 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:12:43,304 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:12:43,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:12:43,309 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 23:12:43,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:43 BoogieIcfgContainer [2022-01-31 23:12:43,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:12:43,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:12:43,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:12:43,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:12:43,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:12:42" (1/3) ... [2022-01-31 23:12:43,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1933f16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:43, skipping insertion in model container [2022-01-31 23:12:43,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:42" (2/3) ... [2022-01-31 23:12:43,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1933f16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:43, skipping insertion in model container [2022-01-31 23:12:43,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:43" (3/3) ... [2022-01-31 23:12:43,316 INFO L111 eAbstractionObserver]: Analyzing ICFG array14_pattern.c [2022-01-31 23:12:43,319 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:12:43,319 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:12:43,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:12:43,365 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=QVASR [2022-01-31 23:12:43,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:12:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 23:12:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:12:43,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:43,395 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] [2022-01-31 23:12:43,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash -852407714, now seen corresponding path program 1 times [2022-01-31 23:12:43,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:43,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638756228] [2022-01-31 23:12:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:43,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:43,450 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:12:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:12:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:12:43,572 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:12:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638756228] [2022-01-31 23:12:43,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1638756228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:12:43,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:12:43,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:12:43,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033056015] [2022-01-31 23:12:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:12:43,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:12:43,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:12:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:12:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:12:43,604 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-01-31 23:12:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:12:43,666 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2022-01-31 23:12:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:12:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 20 [2022-01-31 23:12:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:12:43,672 INFO L225 Difference]: With dead ends: 71 [2022-01-31 23:12:43,672 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 23:12:43,674 INFO L932 BasicCegarLoop]: 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 [2022-01-31 23:12:43,677 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:12:43,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:12:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 23:12:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 23:12:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:12:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-01-31 23:12:43,710 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2022-01-31 23:12:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:12:43,710 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-01-31 23:12:43,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2022-01-31 23:12:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-01-31 23:12:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 23:12:43,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:43,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:12:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:12:43,714 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -992838655, now seen corresponding path program 1 times [2022-01-31 23:12:43,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:43,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183413133] [2022-01-31 23:12:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:43,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:43,725 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:43,740 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:12:43,740 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:12:43,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:12:43,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:12:43,753 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:12:43,755 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:12:43,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:12:43 BoogieIcfgContainer [2022-01-31 23:12:43,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:12:43,769 INFO L158 Benchmark]: Toolchain (without parser) took 1082.52ms. Allocated memory was 222.3MB in the beginning and 368.1MB in the end (delta: 145.8MB). Free memory was 165.7MB in the beginning and 295.4MB in the end (delta: -129.6MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. [2022-01-31 23:12:43,770 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 181.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:12:43,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.37ms. Allocated memory was 222.3MB in the beginning and 368.1MB in the end (delta: 145.8MB). Free memory was 165.5MB in the beginning and 339.4MB in the end (delta: -173.9MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-01-31 23:12:43,773 INFO L158 Benchmark]: Boogie Preprocessor took 37.29ms. Allocated memory is still 368.1MB. Free memory was 339.4MB in the beginning and 337.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:12:43,774 INFO L158 Benchmark]: RCFGBuilder took 310.54ms. Allocated memory is still 368.1MB. Free memory was 337.8MB in the beginning and 324.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:12:43,775 INFO L158 Benchmark]: TraceAbstraction took 457.26ms. Allocated memory is still 368.1MB. Free memory was 324.2MB in the beginning and 295.4MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 23:12:43,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 181.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.37ms. Allocated memory was 222.3MB in the beginning and 368.1MB in the end (delta: 145.8MB). Free memory was 165.5MB in the beginning and 339.4MB in the end (delta: -173.9MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.29ms. Allocated memory is still 368.1MB. Free memory was 339.4MB in the beginning and 337.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.54ms. Allocated memory is still 368.1MB. Free memory was 337.8MB in the beginning and 324.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 457.26ms. Allocated memory is still 368.1MB. Free memory was 324.2MB in the beginning and 295.4MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. 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 - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L36] signed long long ARR_SIZE ; [L40] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L41] CALL assume_abort_if_not(ARR_SIZE > 0) [L30] COND FALSE !(!cond) [L41] RET assume_abort_if_not(ARR_SIZE > 0) [L43] int array[ARR_SIZE][ARR_SIZE] ; [L45] int row = 0, column = 0, num = -1 ; [L46] signed long long sum = 0 ; [L47] int temp ; [L48] signed long long index1,index2 ; [L50] row=0 [L50] COND FALSE !(row=0 && index1 < ARR_SIZE) [L30] COND FALSE !(!cond) [L59] RET assume_abort_if_not(index1>=0 && index1 < ARR_SIZE) [L60] CALL assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L30] COND FALSE !(!cond) [L60] RET assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L62] EXPR (index1+index2 == ARR_SIZE-1) ? (num*num*num*num) : array[index1][index2] [L62] array[index1][index2] = (index1+index2 == ARR_SIZE-1) ? (num*num*num*num) : array[index1][index2] [L65] temp = __VERIFIER_nondet_int() [L66] COND TRUE temp == 0 [L69] row=0 [L69] COND FALSE !(row= 0 && sum <= ARR_SIZE) [L32] COND TRUE !(cond) [L32] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 46 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 23:12:43,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...