/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/array3_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:12:55,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:12:55,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:12:55,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:12:55,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:12:55,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:12:55,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:12:55,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:12:55,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:12:55,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:12:55,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:12:55,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:12:55,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:12:55,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:12:55,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:12:55,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:12:55,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:12:55,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:12:55,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:12:55,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:12:55,795 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 23:12:55,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:12:55,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:12:55,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:12:55,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:12:55,807 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:12:55,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:55,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:12:55,808 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:12:55,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:12:55,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:12:56,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:12:56,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:12:56,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:12:56,016 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:12:56,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array3_pattern.c [2022-01-31 23:12:56,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ece3ce1/80bb6a58abd04b0385daaa943da38b15/FLAG395a14631 [2022-01-31 23:12:56,380 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:12:56,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array3_pattern.c [2022-01-31 23:12:56,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ece3ce1/80bb6a58abd04b0385daaa943da38b15/FLAG395a14631 [2022-01-31 23:12:56,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4ece3ce1/80bb6a58abd04b0385daaa943da38b15 [2022-01-31 23:12:56,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:12:56,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:12:56,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:56,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:12:56,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:12:56,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:56" (1/1) ... [2022-01-31 23:12:56,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f921eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:56, skipping insertion in model container [2022-01-31 23:12:56,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:12:56" (1/1) ... [2022-01-31 23:12:56,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:12:56,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:12:56,947 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/array3_pattern.c[1393,1406] [2022-01-31 23:12:56,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:56,975 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:12:56,982 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/array3_pattern.c[1393,1406] [2022-01-31 23:12:57,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:12:57,014 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:12:57,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57 WrapperNode [2022-01-31 23:12:57,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:12:57,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:12:57,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:12:57,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:12:57,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:12:57,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:12:57,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:12:57,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:12:57,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (1/1) ... [2022-01-31 23:12:57,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:12:57,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:12:57,078 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 23:12:57,107 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 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-01-31 23:12:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:12:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:12:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 23:12:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-01-31 23:12:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:12:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:12:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:12:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:12:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:12:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:12:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:12:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:12:57,207 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:12:57,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:12:57,348 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:12:57,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:12:57,352 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 23:12:57,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:57 BoogieIcfgContainer [2022-01-31 23:12:57,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:12:57,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:12:57,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:12:57,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:12:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:12:56" (1/3) ... [2022-01-31 23:12:57,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ef9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:57, skipping insertion in model container [2022-01-31 23:12:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:12:57" (2/3) ... [2022-01-31 23:12:57,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ef9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:12:57, skipping insertion in model container [2022-01-31 23:12:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:12:57" (3/3) ... [2022-01-31 23:12:57,374 INFO L111 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-01-31 23:12:57,377 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:12:57,377 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:12:57,441 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:12:57,458 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 23:12:57,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:12:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 23:12:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:12:57,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:57,476 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 23:12:57,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -232200668, now seen corresponding path program 1 times [2022-01-31 23:12:57,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083974533] [2022-01-31 23:12:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:57,535 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:12:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:12:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:12:57,668 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 23:12:57,669 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:12:57,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083974533] [2022-01-31 23:12:57,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1083974533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:12:57,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:12:57,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:12:57,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862091275] [2022-01-31 23:12:57,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:12:57,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:12:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:12:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:12:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:12:57,694 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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 23:12:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:12:57,765 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2022-01-31 23:12:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:12:57,767 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 23:12:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:12:57,772 INFO L225 Difference]: With dead ends: 73 [2022-01-31 23:12:57,773 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 23:12:57,775 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 23:12:57,779 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:12:57,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:12:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 23:12:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-31 23:12:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 23:12:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 23:12:57,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2022-01-31 23:12:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:12:57,804 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 23:12:57,805 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 23:12:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 23:12:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 23:12:57,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:12:57,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:12:57,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:12:57,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:12:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:12:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1441309381, now seen corresponding path program 1 times [2022-01-31 23:12:57,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:12:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269505519] [2022-01-31 23:12:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:12:57,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:12:57,809 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:12:57,825 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:12:57,825 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:12:57,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:12:57,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:12:57,833 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:12:57,834 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:12:57,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:12:57 BoogieIcfgContainer [2022-01-31 23:12:57,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:12:57,842 INFO L158 Benchmark]: Toolchain (without parser) took 1031.60ms. Allocated memory is still 197.1MB. Free memory was 142.0MB in the beginning and 123.7MB in the end (delta: 18.3MB). Peak memory consumption was 19.4MB. Max. memory is 8.0GB. [2022-01-31 23:12:57,843 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 157.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:12:57,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.29ms. Allocated memory is still 197.1MB. Free memory was 141.8MB in the beginning and 167.2MB in the end (delta: -25.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-01-31 23:12:57,843 INFO L158 Benchmark]: Boogie Preprocessor took 37.43ms. Allocated memory is still 197.1MB. Free memory was 167.2MB in the beginning and 165.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:12:57,844 INFO L158 Benchmark]: RCFGBuilder took 300.07ms. Allocated memory is still 197.1MB. Free memory was 165.6MB in the beginning and 153.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:12:57,844 INFO L158 Benchmark]: TraceAbstraction took 487.56ms. Allocated memory is still 197.1MB. Free memory was 152.5MB in the beginning and 123.7MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-01-31 23:12:57,846 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 197.1MB. Free memory is still 157.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.29ms. Allocated memory is still 197.1MB. Free memory was 141.8MB in the beginning and 167.2MB in the end (delta: -25.4MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.43ms. Allocated memory is still 197.1MB. Free memory was 167.2MB in the beginning and 165.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 300.07ms. Allocated memory is still 197.1MB. Free memory was 165.6MB in the beginning and 153.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 487.56ms. Allocated memory is still 197.1MB. Free memory was 152.5MB in the beginning and 123.7MB in the end (delta: 28.8MB). 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: 33]: 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: [L37] signed long long ARR_SIZE ; [L46] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L47] CALL assume_abort_if_not(ARR_SIZE > 0) [L31] COND FALSE !(!cond) [L47] RET assume_abort_if_not(ARR_SIZE > 0) [L49] int array1[ARR_SIZE] ; [L50] int array2[ARR_SIZE] ; [L51] int count = 0, num = -1 ; [L52] signed long long sum1 = 0, sum2 = 0 ; [L53] int temp ; [L54] short index ; [L56] count=0 [L56] COND FALSE !(count=0 && index < ARR_SIZE) [L31] COND FALSE !(!cond) [L66] RET assume_abort_if_not(index>=0 && index < ARR_SIZE) [L68] EXPR array1[index] [L68] array1[index] = array1[index] + num*(num*index) [L69] EXPR array2[ARR_SIZE-1-index] [L69] array2[ARR_SIZE-1-index] = array2[ARR_SIZE-1-index] + (num * index) [L71] temp = __VERIFIER_nondet_int() [L72] COND TRUE temp == 0 [L75] count=0 [L75] COND FALSE !(count