/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/array20_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:12:46,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:12:46,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:12:46,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:12:46,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:12:46,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:12:46,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:12:46,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:12:46,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:12:46,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:12:46,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:12:46,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:12:46,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:12:46,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:12:46,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:12:46,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:12:46,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:12:46,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:12:46,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:12:46,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:12:46,855 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 23:12:46,862 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:12:46,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:12:46,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:12:46,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:12:46,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:12:46,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:46,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:12:46,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:12:46,866 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:12:46,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:12:47,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:12:47,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:12:47,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:12:47,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:12:47,045 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:12:47,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array20_pattern.c [2022-01-31 23:12:47,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e42e99ee/b03c7d0548f24f2c953c4cfabe2f1996/FLAGae629f7d0 [2022-01-31 23:12:47,413 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:12:47,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array20_pattern.c [2022-01-31 23:12:47,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e42e99ee/b03c7d0548f24f2c953c4cfabe2f1996/FLAGae629f7d0 [2022-01-31 23:12:47,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e42e99ee/b03c7d0548f24f2c953c4cfabe2f1996 [2022-01-31 23:12:47,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:12:47,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:12:47,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:47,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:12:47,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:12:47,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6c9a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47, skipping insertion in model container [2022-01-31 23:12:47,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:12:47,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:12:47,532 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/array20_pattern.c[1444,1457] [2022-01-31 23:12:47,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:47,571 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:12:47,577 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/array20_pattern.c[1444,1457] [2022-01-31 23:12:47,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:47,594 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:12:47,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47 WrapperNode [2022-01-31 23:12:47,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:47,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:12:47,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:12:47,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:12:47,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:12:47,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:12:47,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:12:47,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:12:47,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (1/1) ... [2022-01-31 23:12:47,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:12:47,642 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 23:12:47,643 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 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:12:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:12:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:12:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:12:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:12:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:12:47,706 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:12:47,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:12:47,807 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:12:47,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:12:47,811 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 23:12:47,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:47 BoogieIcfgContainer [2022-01-31 23:12:47,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:12:47,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:12:47,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:12:47,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:12:47,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:12:47" (1/3) ... [2022-01-31 23:12:47,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385a7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:47, skipping insertion in model container [2022-01-31 23:12:47,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:47" (2/3) ... [2022-01-31 23:12:47,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385a7bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:47, skipping insertion in model container [2022-01-31 23:12:47,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:47" (3/3) ... [2022-01-31 23:12:47,830 INFO L111 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-01-31 23:12:47,833 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:12:47,847 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:12:47,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:12:47,911 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 23:12:47,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:12:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 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 23:12:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:12:47,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:47,940 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 23:12:47,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1815321502, now seen corresponding path program 1 times [2022-01-31 23:12:47,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:47,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639011124] [2022-01-31 23:12:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:47,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:47,985 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:12:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:12:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:48,102 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 23:12:48,103 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:12:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639011124] [2022-01-31 23:12:48,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [639011124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:12:48,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:12:48,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:12:48,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679455098] [2022-01-31 23:12:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:12:48,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:12:48,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:12:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:12:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:12:48,135 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 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 23:12:48,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:12:48,221 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2022-01-31 23:12:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:12:48,223 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 23:12:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:12:48,237 INFO L225 Difference]: With dead ends: 75 [2022-01-31 23:12:48,237 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 23:12:48,240 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 23:12:48,244 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:12:48,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:12:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 23:12:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 23:12:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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 23:12:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-01-31 23:12:48,282 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2022-01-31 23:12:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:12:48,282 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-01-31 23:12:48,282 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 23:12:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-01-31 23:12:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 23:12:48,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:48,284 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, 1, 1] [2022-01-31 23:12:48,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:12:48,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1707268263, now seen corresponding path program 1 times [2022-01-31 23:12:48,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:48,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622571751] [2022-01-31 23:12:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:48,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:48,291 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:48,330 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:12:48,330 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:12:48,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:12:48,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:12:48,338 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:12:48,339 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:12:48,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:12:48 BoogieIcfgContainer [2022-01-31 23:12:48,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:12:48,347 INFO L158 Benchmark]: Toolchain (without parser) took 920.58ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 108.1MB in the end (delta: 17.7MB). Peak memory consumption was 17.3MB. Max. memory is 8.0GB. [2022-01-31 23:12:48,348 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:12:48,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.38ms. Allocated memory is still 174.1MB. Free memory was 125.6MB in the beginning and 151.6MB in the end (delta: -26.0MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-31 23:12:48,348 INFO L158 Benchmark]: Boogie Preprocessor took 21.37ms. Allocated memory is still 174.1MB. Free memory was 151.6MB in the beginning and 150.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:12:48,349 INFO L158 Benchmark]: RCFGBuilder took 195.40ms. Allocated memory is still 174.1MB. Free memory was 150.0MB in the beginning and 138.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 23:12:48,349 INFO L158 Benchmark]: TraceAbstraction took 526.80ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 108.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-01-31 23:12:48,351 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 174.1MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.38ms. Allocated memory is still 174.1MB. Free memory was 125.6MB in the beginning and 151.6MB in the end (delta: -26.0MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.37ms. Allocated memory is still 174.1MB. Free memory was 151.6MB in the beginning and 150.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 195.40ms. Allocated memory is still 174.1MB. Free memory was 150.0MB in the beginning and 138.0MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 526.80ms. Allocated memory is still 174.1MB. Free memory was 137.4MB in the beginning and 108.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 34]: 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: [L38] signed long long ARR_SIZE ; [L42] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L43] CALL assume_abort_if_not(ARR_SIZE > 0) [L32] COND FALSE !(!cond) [L43] RET assume_abort_if_not(ARR_SIZE > 0) [L45] int array[ARR_SIZE][ARR_SIZE] ; [L47] int row = 0, column = 0, num = -1 ; [L48] signed long long sum = 0 ; [L49] int temp ; [L50] signed long long index1,index2 ; [L52] row=0 [L52] COND FALSE !(row=0 && index1 < ARR_SIZE) [L32] COND FALSE !(!cond) [L61] RET assume_abort_if_not(index1>=0 && index1 < ARR_SIZE) [L62] CALL assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L32] COND FALSE !(!cond) [L62] RET assume_abort_if_not(index2>=0 && index2 < ARR_SIZE) [L65] EXPR (index1+index2 == ARR_SIZE-1) ? num : array[index1][index2] [L65] array[index1][index2] = (index1+index2 == ARR_SIZE-1) ? num : array[index1][index2] [L66] EXPR (index1+index2 == ARR_SIZE-1) ? (num*num*num*num) : array[ARR_SIZE-1-index1][index2] [L66] array[ARR_SIZE-1-index1][index2] = (index1+index2 == ARR_SIZE-1) ? (num*num*num*num) : array[ARR_SIZE-1-index1][index2] [L69] temp = __VERIFIER_nondet_int() [L70] COND TRUE temp == 0 [L73] row=0 [L73] COND FALSE !(row