/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/array27_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:12:52,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:12:52,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:12:52,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:12:52,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:12:52,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:12:52,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:12:52,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:12:52,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:12:52,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:12:52,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:12:52,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:12:52,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:12:52,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:12:52,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:12:52,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:12:52,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:12:52,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:12:52,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:12:52,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:12:52,390 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 23:12:52,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:12:52,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:12:52,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:12:52,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:12:52,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:12:52,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:12:52,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:12:52,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:12:52,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:12:52,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:52,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:12:52,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:12:52,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:12:52,405 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:12:52,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:12:52,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:12:52,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:12:52,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:12:52,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:12:52,587 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:12:52,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array27_pattern.c [2022-01-31 23:12:52,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3929f7d/2ca1c0a3aaa643239f303fbb05beaf25/FLAGef9a0711e [2022-01-31 23:12:52,939 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:12:52,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c [2022-01-31 23:12:52,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3929f7d/2ca1c0a3aaa643239f303fbb05beaf25/FLAGef9a0711e [2022-01-31 23:12:53,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3929f7d/2ca1c0a3aaa643239f303fbb05beaf25 [2022-01-31 23:12:53,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:12:53,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:12:53,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:53,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:12:53,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:12:53,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee8d82a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53, skipping insertion in model container [2022-01-31 23:12:53,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:12:53,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:12:53,544 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/array27_pattern.c[1253,1266] [2022-01-31 23:12:53,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:53,560 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:12:53,567 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/array27_pattern.c[1253,1266] [2022-01-31 23:12:53,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:53,582 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:12:53,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53 WrapperNode [2022-01-31 23:12:53,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:53,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:12:53,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:12:53,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:12:53,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:12:53,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:12:53,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:12:53,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:12:53,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (1/1) ... [2022-01-31 23:12:53,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:12:53,649 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 23:12:53,667 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 23:12:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:12:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:12:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:12:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:12:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:12:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:12:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:12:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:12:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:12:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:12:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:12:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:12:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:12:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 23:12:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:12:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:12:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:12:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:12:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:12:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:12:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:12:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:12:53,728 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:12:53,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:12:53,837 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:12:53,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:12:53,841 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 23:12:53,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:53 BoogieIcfgContainer [2022-01-31 23:12:53,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:12:53,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:12:53,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:12:53,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:12:53,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:12:53" (1/3) ... [2022-01-31 23:12:53,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340d89b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:53, skipping insertion in model container [2022-01-31 23:12:53,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:53" (2/3) ... [2022-01-31 23:12:53,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340d89b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:53, skipping insertion in model container [2022-01-31 23:12:53,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:53" (3/3) ... [2022-01-31 23:12:53,847 INFO L111 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2022-01-31 23:12:53,851 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:12:53,851 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:12:53,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:12:53,891 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 23:12:53,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:12:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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 23:12:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:12:53,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:53,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:12:53,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash -674418945, now seen corresponding path program 1 times [2022-01-31 23:12:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:53,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657451044] [2022-01-31 23:12:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:53,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:53,988 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:12:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:12:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:54,101 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 23:12:54,102 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:12:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657451044] [2022-01-31 23:12:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1657451044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:12:54,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:12:54,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:12:54,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915758321] [2022-01-31 23:12:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:12:54,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:12:54,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:12:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:12:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:12:54,134 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 23:12:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:12:54,217 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2022-01-31 23:12:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:12:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 19 [2022-01-31 23:12:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:12:54,228 INFO L225 Difference]: With dead ends: 59 [2022-01-31 23:12:54,228 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 23:12:54,230 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 23:12:54,233 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:12:54,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:12:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 23:12:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 23:12:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 23:12:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 23:12:54,266 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2022-01-31 23:12:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:12:54,267 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 23:12:54,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 23:12:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 23:12:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:12:54,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:54,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:12:54,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:12:54,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 26645633, now seen corresponding path program 1 times [2022-01-31 23:12:54,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:54,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753127449] [2022-01-31 23:12:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:54,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:54,279 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:54,292 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:12:54,292 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:12:54,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:12:54,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:12:54,300 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:12:54,302 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:12:54,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:12:54 BoogieIcfgContainer [2022-01-31 23:12:54,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:12:54,309 INFO L158 Benchmark]: Toolchain (without parser) took 926.34ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 129.1MB in the beginning and 155.9MB in the end (delta: -26.8MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2022-01-31 23:12:54,309 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:12:54,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.81ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 128.9MB in the beginning and 197.7MB in the end (delta: -68.8MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. [2022-01-31 23:12:54,310 INFO L158 Benchmark]: Boogie Preprocessor took 20.26ms. Allocated memory is still 224.4MB. Free memory was 197.7MB in the beginning and 196.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:12:54,311 INFO L158 Benchmark]: RCFGBuilder took 238.21ms. Allocated memory is still 224.4MB. Free memory was 196.3MB in the beginning and 183.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 23:12:54,315 INFO L158 Benchmark]: TraceAbstraction took 465.59ms. Allocated memory is still 224.4MB. Free memory was 183.2MB in the beginning and 155.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-01-31 23:12:54,323 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 181.4MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.81ms. Allocated memory was 181.4MB in the beginning and 224.4MB in the end (delta: 43.0MB). Free memory was 128.9MB in the beginning and 197.7MB in the end (delta: -68.8MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.26ms. Allocated memory is still 224.4MB. Free memory was 197.7MB in the beginning and 196.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.21ms. Allocated memory is still 224.4MB. Free memory was 196.3MB in the beginning and 183.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 465.59ms. Allocated memory is still 224.4MB. Free memory was 183.2MB in the beginning and 155.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. 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 ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L42] CALL assume_abort_if_not(ARR_SIZE > 0) [L30] COND FALSE !(!cond) [L42] RET assume_abort_if_not(ARR_SIZE > 0) [L44] int array[ARR_SIZE][ARR_SIZE] ; [L46] int row = 0, column = 0 ; [L48] signed long long sum = 0 ; [L50] row=0 [L50] COND FALSE !(row