/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:14:53,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:14:53,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:14:53,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:14:53,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:14:53,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:14:53,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:14:53,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:14:53,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:14:53,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:14:53,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:14:53,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:14:53,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:14:53,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:14:53,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:14:53,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:14:53,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:14:53,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:14:53,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:14:53,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:14:53,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:14:53,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:14:53,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:14:53,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:14:53,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:14:53,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:14:53,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:14:53,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:14:53,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:14:53,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:14:53,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:14:53,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:14:53,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:14:53,914 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:14:53,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:14:53,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:14:53,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:14:53,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:14:53,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:14:53,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:14:53,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:14:53,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:14:53,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:14:53,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:14:53,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:14:53,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:14:53,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:14:53,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:14:53,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:14:53,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:14:53,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:53,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:14:53,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:14:53,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:14:53,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:14:53,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:14:53,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:14:53,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:14:53,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 14:14:54,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:14:54,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:14:54,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:14:54,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:14:54,252 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:14:54,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-08-21 14:14:54,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9716e39a/d550ecdcb24845ee944a079f5c6725c5/FLAG0fbcccd9f [2020-08-21 14:14:54,774 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:14:54,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-08-21 14:14:54,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9716e39a/d550ecdcb24845ee944a079f5c6725c5/FLAG0fbcccd9f [2020-08-21 14:14:55,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9716e39a/d550ecdcb24845ee944a079f5c6725c5 [2020-08-21 14:14:55,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:14:55,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:14:55,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:55,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:14:55,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:14:55,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35de7d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55, skipping insertion in model container [2020-08-21 14:14:55,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:14:55,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:14:55,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:55,369 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:14:55,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:55,413 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:14:55,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55 WrapperNode [2020-08-21 14:14:55,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:55,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:14:55,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:14:55,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:14:55,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... [2020-08-21 14:14:55,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:14:55,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:14:55,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:14:55,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:14:55,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:14:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:14:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:14:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:14:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:14:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:14:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:14:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:14:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:14:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:14:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:14:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:14:55,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:14:55,905 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 14:14:55,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:55 BoogieIcfgContainer [2020-08-21 14:14:55,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:14:55,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:14:55,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:14:55,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:14:55,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:14:55" (1/3) ... [2020-08-21 14:14:55,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a21974e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:55, skipping insertion in model container [2020-08-21 14:14:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:55" (2/3) ... [2020-08-21 14:14:55,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a21974e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:55, skipping insertion in model container [2020-08-21 14:14:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:55" (3/3) ... [2020-08-21 14:14:55,929 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-08-21 14:14:55,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:14:55,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:14:55,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:14:55,978 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:14:55,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:14:55,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:14:55,979 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:14:55,979 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:14:55,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:14:55,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:14:55,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:14:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-21 14:14:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 14:14:56,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:56,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:14:56,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1649343282, now seen corresponding path program 1 times [2020-08-21 14:14:56,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:56,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451177848] [2020-08-21 14:14:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:14:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451177848] [2020-08-21 14:14:56,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:56,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:14:56,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762526036] [2020-08-21 14:14:56,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:14:56,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:56,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:14:56,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:56,267 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-21 14:14:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:56,346 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-08-21 14:14:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:14:56,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-21 14:14:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:56,357 INFO L225 Difference]: With dead ends: 36 [2020-08-21 14:14:56,357 INFO L226 Difference]: Without dead ends: 15 [2020-08-21 14:14:56,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-21 14:14:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-21 14:14:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-21 14:14:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-21 14:14:56,404 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-08-21 14:14:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:56,405 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-21 14:14:56,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:14:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-21 14:14:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 14:14:56,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:56,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:14:56,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:14:56,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1939839121, now seen corresponding path program 1 times [2020-08-21 14:14:56,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:56,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356097683] [2020-08-21 14:14:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:14:56,457 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:14:56,457 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:14:56,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:14:56,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:14:56 BoogieIcfgContainer [2020-08-21 14:14:56,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:14:56,482 INFO L168 Benchmark]: Toolchain (without parser) took 1319.70 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 104.4 MB in the beginning and 139.8 MB in the end (delta: -35.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,483 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.11 ms. Allocated memory is still 147.8 MB. Free memory was 104.2 MB in the beginning and 94.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,486 INFO L168 Benchmark]: Boogie Preprocessor took 135.70 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 94.1 MB in the beginning and 181.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,488 INFO L168 Benchmark]: RCFGBuilder took 360.07 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,488 INFO L168 Benchmark]: TraceAbstraction took 564.43 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 139.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:56,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.11 ms. Allocated memory is still 147.8 MB. Free memory was 104.2 MB in the beginning and 94.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.70 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 94.1 MB in the beginning and 181.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.07 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 167.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 564.43 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 139.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] unsigned int array[10000]; [L25] unsigned int index = 0; [L26] unsigned int tmp = 0; [L28] COND TRUE 1 [L29] index = __VERIFIER_nondet_uint() [L30] COND TRUE index >= 10000 [L37] EXPR tmp < 10000 && array[tmp] == tmp [L37] EXPR array[tmp] [L37] EXPR tmp < 10000 && array[tmp] == tmp [L37] CALL __VERIFIER_assert(tmp < 10000 && array[tmp] == tmp) [L14] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...