/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:48:25,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:48:25,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:48:25,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:48:25,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:48:25,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:48:25,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:48:25,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:48:25,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:48:25,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:48:25,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:48:25,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:48:25,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:48:25,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:48:25,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:48:25,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:48:25,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:48:25,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:48:25,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:48:25,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:48:25,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:48:25,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:48:25,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:48:25,144 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:48:25,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:48:25,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:48:25,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:48:25,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:48:25,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:48:25,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:48:25,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:48:25,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:48:25,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:48:25,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:48:25,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:48:25,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:48:25,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-10-23 21:48:25,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c0c6ca9/e8fc39b0443f44cf91d21694857bae20/FLAG5b7888bdd [2020-10-23 21:48:26,469 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:48:26,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-10-23 21:48:26,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c0c6ca9/e8fc39b0443f44cf91d21694857bae20/FLAG5b7888bdd [2020-10-23 21:48:26,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c0c6ca9/e8fc39b0443f44cf91d21694857bae20 [2020-10-23 21:48:26,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:48:26,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:48:26,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:48:26,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:48:26,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:48:26,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:48:26" (1/1) ... [2020-10-23 21:48:26,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd797a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:26, skipping insertion in model container [2020-10-23 21:48:26,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:48:26" (1/1) ... [2020-10-23 21:48:26,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:48:26,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:48:27,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:48:27,065 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:48:27,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:48:27,110 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:48:27,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27 WrapperNode [2020-10-23 21:48:27,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:48:27,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:48:27,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:48:27,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:48:27,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... [2020-10-23 21:48:27,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:48:27,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:48:27,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:48:27,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:48:27,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 21:48:27,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:48:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:48:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:48:27,256 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:48:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:48:27,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:48:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:48:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:48:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 21:48:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 21:48:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:48:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:48:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:48:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:48:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 21:48:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:48:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:48:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:48:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:48:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:48:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:48:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:48:27,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:48:27,791 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:48:27,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:48:27 BoogieIcfgContainer [2020-10-23 21:48:27,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:48:27,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:48:27,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:48:27,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:48:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:48:26" (1/3) ... [2020-10-23 21:48:27,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4676d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:48:27, skipping insertion in model container [2020-10-23 21:48:27,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:48:27" (2/3) ... [2020-10-23 21:48:27,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4676d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:48:27, skipping insertion in model container [2020-10-23 21:48:27,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:48:27" (3/3) ... [2020-10-23 21:48:27,805 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-10-23 21:48:27,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:48:27,827 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:48:27,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:48:27,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:48:27,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:48:27,873 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:48:27,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:48:27,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:48:27,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:48:27,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:48:27,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:48:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-23 21:48:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 21:48:27,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:48:27,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:48:27,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:48:27,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:48:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash -428551658, now seen corresponding path program 1 times [2020-10-23 21:48:27,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:48:27,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43070383] [2020-10-23 21:48:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:48:28,014 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:48:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:48:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:48:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:48:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:48:28,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43070383] [2020-10-23 21:48:28,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:48:28,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:48:28,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818873619] [2020-10-23 21:48:28,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:48:28,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:48:28,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:48:28,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:48:28,275 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 3 states. [2020-10-23 21:48:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:48:28,525 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-10-23 21:48:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:48:28,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-23 21:48:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:48:28,558 INFO L225 Difference]: With dead ends: 66 [2020-10-23 21:48:28,558 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 21:48:28,566 INFO L677 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 [2020-10-23 21:48:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 21:48:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-23 21:48:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 21:48:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-23 21:48:28,622 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2020-10-23 21:48:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:48:28,623 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-23 21:48:28,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:48:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-23 21:48:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 21:48:28,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:48:28,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:48:28,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:48:28,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:48:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:48:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash -925962067, now seen corresponding path program 1 times [2020-10-23 21:48:28,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:48:28,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096113225] [2020-10-23 21:48:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:48:28,631 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:48:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:48:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:48:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:48:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:48:28,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096113225] [2020-10-23 21:48:28,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:48:28,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:48:28,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719666719] [2020-10-23 21:48:28,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:48:28,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:48:28,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:48:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:48:28,885 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 5 states. [2020-10-23 21:48:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:48:29,010 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-23 21:48:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:48:29,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-23 21:48:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:48:29,014 INFO L225 Difference]: With dead ends: 49 [2020-10-23 21:48:29,015 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 21:48:29,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:48:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 21:48:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-23 21:48:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-23 21:48:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-23 21:48:29,030 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2020-10-23 21:48:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:48:29,031 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-23 21:48:29,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:48:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-23 21:48:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 21:48:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:48:29,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:48:29,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:48:29,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:48:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:48:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash -776902774, now seen corresponding path program 1 times [2020-10-23 21:48:29,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:48:29,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921363721] [2020-10-23 21:48:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:48:29,040 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:48:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:48:29,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:48:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:48:29,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:48:29,145 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:48:29,146 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:48:29,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:48:29,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:48:29 BoogieIcfgContainer [2020-10-23 21:48:29,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:48:29,168 INFO L168 Benchmark]: Toolchain (without parser) took 2351.95 ms. Allocated memory is still 166.7 MB. Free memory was 142.7 MB in the beginning and 132.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:48:29,169 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:48:29,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.54 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:48:29,171 INFO L168 Benchmark]: Boogie Preprocessor took 44.98 ms. Allocated memory is still 166.7 MB. Free memory was 132.0 MB in the beginning and 130.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:48:29,172 INFO L168 Benchmark]: RCFGBuilder took 635.79 ms. Allocated memory is still 166.7 MB. Free memory was 130.6 MB in the beginning and 148.2 MB in the end (delta: -17.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:48:29,173 INFO L168 Benchmark]: TraceAbstraction took 1369.33 ms. Allocated memory is still 166.7 MB. Free memory was 147.5 MB in the beginning and 132.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:48:29,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 101.0 MB in the end (delta: 68.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.54 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.98 ms. Allocated memory is still 166.7 MB. Free memory was 132.0 MB in the beginning and 130.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.79 ms. Allocated memory is still 166.7 MB. Free memory was 130.6 MB in the beginning and 148.2 MB in the end (delta: -17.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1369.33 ms. Allocated memory is still 166.7 MB. Free memory was 147.5 MB in the beginning and 132.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L35] unsigned int array[10000]; [L36] unsigned int index = 0; [L37] unsigned int tmp = 0; [L39] COND TRUE 1 [L40] index = __VERIFIER_nondet_uint() [L41] COND TRUE index >= 10000 [L48] EXPR tmp < 10000 && array[tmp] == tmp [L48] EXPR array[tmp] [L48] EXPR tmp < 10000 && array[tmp] == tmp [L48] CALL __VERIFIER_assert(tmp < 10000 && array[tmp] == tmp) [L25] COND TRUE !(cond) [L26] CALL reach_error() [L18] COND FALSE !(0) [L18] __assert_fail ("0", "simple_array_index_value_1-2.c", 7, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 18 SDslu, 52 SDs, 0 SdLazy, 71 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...