/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 20:14:01,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 20:14:01,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 20:14:01,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 20:14:01,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 20:14:01,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 20:14:01,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 20:14:01,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 20:14:01,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 20:14:01,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 20:14:01,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 20:14:01,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 20:14:01,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 20:14:01,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 20:14:01,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 20:14:01,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 20:14:01,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 20:14:01,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 20:14:01,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 20:14:01,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 20:14:01,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 20:14:01,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 20:14:01,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 20:14:01,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 20:14:01,182 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 20:14:01,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 20:14:01,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 20:14:01,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 20:14:01,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 20:14:01,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 20:14:01,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 20:14:01,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:14:01,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 20:14:01,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 20:14:01,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 20:14:01,184 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 20:14:01,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 20:14:01,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 20:14:01,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 20:14:01,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 20:14:01,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 20:14:01,384 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 20:14:01,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c [2022-01-31 20:14:01,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99240219e/fdbac2657dd343af8ebed66c174ea27c/FLAG33433b783 [2022-01-31 20:14:01,791 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 20:14:01,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn4f.c [2022-01-31 20:14:01,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99240219e/fdbac2657dd343af8ebed66c174ea27c/FLAG33433b783 [2022-01-31 20:14:02,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99240219e/fdbac2657dd343af8ebed66c174ea27c [2022-01-31 20:14:02,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 20:14:02,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 20:14:02,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 20:14:02,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 20:14:02,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 20:14:02,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@899d706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02, skipping insertion in model container [2022-01-31 20:14:02,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 20:14:02,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 20:14:02,338 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/ifeqn4f.c[590,603] [2022-01-31 20:14:02,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:14:02,370 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 20:14:02,377 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/ifeqn4f.c[590,603] [2022-01-31 20:14:02,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:14:02,389 INFO L208 MainTranslator]: Completed translation [2022-01-31 20:14:02,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02 WrapperNode [2022-01-31 20:14:02,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 20:14:02,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 20:14:02,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 20:14:02,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 20:14:02,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 20:14:02,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 20:14:02,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 20:14:02,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 20:14:02,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (1/1) ... [2022-01-31 20:14:02,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:14:02,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 20:14:02,449 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 20:14:02,450 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 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 20:14:02,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 20:14:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 20:14:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 20:14:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 20:14:02,520 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 20:14:02,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 20:14:02,642 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 20:14:02,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 20:14:02,646 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 20:14:02,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:14:02 BoogieIcfgContainer [2022-01-31 20:14:02,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 20:14:02,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 20:14:02,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 20:14:02,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 20:14:02,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:14:02" (1/3) ... [2022-01-31 20:14:02,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18015ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:14:02, skipping insertion in model container [2022-01-31 20:14:02,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:14:02" (2/3) ... [2022-01-31 20:14:02,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18015ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:14:02, skipping insertion in model container [2022-01-31 20:14:02,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:14:02" (3/3) ... [2022-01-31 20:14:02,653 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2022-01-31 20:14:02,656 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 20:14:02,656 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 20:14:02,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 20:14:02,709 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=JORDAN [2022-01-31 20:14:02,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 20:14:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 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) [2022-01-31 20:14:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 20:14:02,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:14:02,744 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, 1, 1] [2022-01-31 20:14:02,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:14:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:14:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1482202103, now seen corresponding path program 1 times [2022-01-31 20:14:02,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:14:02,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292812546] [2022-01-31 20:14:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:14:02,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:14:02,812 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:14:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:14:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:14:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:14:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 20:14:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:14:02,973 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 20:14:02,974 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:14:02,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292812546] [2022-01-31 20:14:02,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1292812546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:14:02,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:14:02,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 20:14:02,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079008171] [2022-01-31 20:14:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:14:02,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 20:14:02,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:14:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 20:14:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 20:14:02,997 INFO L87 Difference]: Start difference. First operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 20:14:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:14:03,076 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-01-31 20:14:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 20:14:03,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 22 [2022-01-31 20:14:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:14:03,085 INFO L225 Difference]: With dead ends: 62 [2022-01-31 20:14:03,085 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 20:14:03,086 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 20:14:03,089 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 20:14:03,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 20:14:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 20:14:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 20:14:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-01-31 20:14:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 20:14:03,121 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2022-01-31 20:14:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:14:03,121 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 20:14:03,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 20:14:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 20:14:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 20:14:03,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:14:03,123 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, 1, 1] [2022-01-31 20:14:03,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 20:14:03,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:14:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:14:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -539484107, now seen corresponding path program 1 times [2022-01-31 20:14:03,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:14:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781781449] [2022-01-31 20:14:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:14:03,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:14:03,134 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:14:03,149 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 20:14:03,149 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 20:14:03,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 20:14:03,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 20:14:03,160 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 20:14:03,161 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 20:14:03,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:14:03 BoogieIcfgContainer [2022-01-31 20:14:03,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 20:14:03,178 INFO L158 Benchmark]: Toolchain (without parser) took 957.65ms. Allocated memory is still 190.8MB. Free memory was 141.0MB in the beginning and 125.7MB in the end (delta: 15.3MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. [2022-01-31 20:14:03,178 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 157.9MB in the beginning and 157.8MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 20:14:03,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.75ms. Allocated memory is still 190.8MB. Free memory was 140.8MB in the beginning and 167.7MB in the end (delta: -26.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 20:14:03,181 INFO L158 Benchmark]: Boogie Preprocessor took 36.43ms. Allocated memory is still 190.8MB. Free memory was 167.3MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 20:14:03,181 INFO L158 Benchmark]: RCFGBuilder took 220.44ms. Allocated memory is still 190.8MB. Free memory was 165.6MB in the beginning and 154.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 20:14:03,181 INFO L158 Benchmark]: TraceAbstraction took 528.59ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 125.7MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 20:14:03,182 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 190.8MB. Free memory was 157.9MB in the beginning and 157.8MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.75ms. Allocated memory is still 190.8MB. Free memory was 140.8MB in the beginning and 167.7MB in the end (delta: -26.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.43ms. Allocated memory is still 190.8MB. Free memory was 167.3MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.44ms. Allocated memory is still 190.8MB. Free memory was 165.6MB in the beginning and 154.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 528.59ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 125.7MB in the end (delta: 27.9MB). 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: 15]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND FALSE !(i