/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -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 0.1.25-72570d3 [2020-08-22 23:02:24,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:02:24,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:02:24,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:02:24,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:02:24,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:02:24,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:02:24,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:02:24,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:02:24,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:02:24,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:02:24,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:02:24,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:02:24,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:02:24,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:02:24,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:02:24,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:02:24,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:02:24,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:02:24,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:02:24,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:02:24,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:02:24,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:02:24,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:02:24,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:02:24,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:02:24,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:02:24,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:02:24,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:02:24,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:02:24,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:02:24,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:02:24,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:02:24,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:02:24,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:02:24,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:02:24,169 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:02:24,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:02:24,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:02:24,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:02:24,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:02:24,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:02:24,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:02:24,171 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 23:02:24,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:02:24,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:02:24,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:02:24,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:02:24,522 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:02:24,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-08-22 23:02:24,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40511fb1/c4bb04c0a1ff4cc6b3f068ebc732936e/FLAGb61f4b92b [2020-08-22 23:02:24,964 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:02:24,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-08-22 23:02:24,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40511fb1/c4bb04c0a1ff4cc6b3f068ebc732936e/FLAGb61f4b92b [2020-08-22 23:02:25,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40511fb1/c4bb04c0a1ff4cc6b3f068ebc732936e [2020-08-22 23:02:25,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:02:25,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:02:25,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:25,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:02:25,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:02:25,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286d3891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25, skipping insertion in model container [2020-08-22 23:02:25,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:02:25,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:02:25,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:25,555 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:02:25,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:25,597 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:02:25,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25 WrapperNode [2020-08-22 23:02:25,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:25,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:02:25,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:02:25,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:02:25,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (1/1) ... [2020-08-22 23:02:25,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:02:25,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:02:25,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:02:25,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:02:25,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (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 [2020-08-22 23:02:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:02:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:02:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:02:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:02:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:02:26,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:02:26,316 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:02:26,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:26 BoogieIcfgContainer [2020-08-22 23:02:26,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:02:26,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:02:26,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:02:26,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:02:26,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:02:25" (1/3) ... [2020-08-22 23:02:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14978aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:26, skipping insertion in model container [2020-08-22 23:02:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:25" (2/3) ... [2020-08-22 23:02:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14978aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:26, skipping insertion in model container [2020-08-22 23:02:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:26" (3/3) ... [2020-08-22 23:02:26,328 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-08-22 23:02:26,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:02:26,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:02:26,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:02:26,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:02:26,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:02:26,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:02:26,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:02:26,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:02:26,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:02:26,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:02:26,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:02:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-22 23:02:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 23:02:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:26,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:02:26,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1780996077, now seen corresponding path program 1 times [2020-08-22 23:02:26,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:26,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356495878] [2020-08-22 23:02:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:26,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356495878] [2020-08-22 23:02:26,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:26,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:02:26,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128064947] [2020-08-22 23:02:26,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:02:26,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:26,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:02:26,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:02:26,613 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-22 23:02:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:26,734 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-08-22 23:02:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:02:26,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 23:02:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:26,745 INFO L225 Difference]: With dead ends: 54 [2020-08-22 23:02:26,745 INFO L226 Difference]: Without dead ends: 25 [2020-08-22 23:02:26,749 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 [2020-08-22 23:02:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-22 23:02:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-22 23:02:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 23:02:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-08-22 23:02:26,788 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 17 [2020-08-22 23:02:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:26,788 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-08-22 23:02:26,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:02:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-08-22 23:02:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 23:02:26,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:26,790 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] [2020-08-22 23:02:26,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:02:26,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash -657316629, now seen corresponding path program 1 times [2020-08-22 23:02:26,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:26,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859334536] [2020-08-22 23:02:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:26,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859334536] [2020-08-22 23:02:26,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:26,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:02:26,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834932179] [2020-08-22 23:02:26,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:02:26,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:02:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:02:26,915 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2020-08-22 23:02:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:27,011 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-08-22 23:02:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:02:27,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 23:02:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:27,015 INFO L225 Difference]: With dead ends: 41 [2020-08-22 23:02:27,015 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 23:02:27,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:02:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 23:02:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-08-22 23:02:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 23:02:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-22 23:02:27,027 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2020-08-22 23:02:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:27,028 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-22 23:02:27,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:02:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-22 23:02:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 23:02:27,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:27,030 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] [2020-08-22 23:02:27,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:02:27,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash -329373976, now seen corresponding path program 1 times [2020-08-22 23:02:27,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:27,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071216815] [2020-08-22 23:02:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:02:27,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:02:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:02:27,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:02:27,101 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:02:27,102 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:02:27,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:02:27,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:02:27 BoogieIcfgContainer [2020-08-22 23:02:27,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:02:27,134 INFO L168 Benchmark]: Toolchain (without parser) took 1778.41 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 116.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,135 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.27 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 94.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,138 INFO L168 Benchmark]: Boogie Preprocessor took 142.93 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.3 MB in the beginning and 181.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,138 INFO L168 Benchmark]: RCFGBuilder took 577.45 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,139 INFO L168 Benchmark]: TraceAbstraction took 810.59 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 116.9 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:27,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.27 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 94.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.93 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.3 MB in the beginning and 181.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 577.45 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 810.59 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 116.9 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 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]; VAL [array={2:0}] [L25] unsigned int index = 0; VAL [array={2:0}, index=0] [L26] unsigned int tmp = 0; VAL [array={2:0}, index=0, tmp=0] [L28] COND TRUE 1 VAL [array={2:0}, index=0, tmp=0] [L29] index = __VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=10000, array={2:0}, index=10000, tmp=0] [L30] COND TRUE index >= 10000 VAL [array={2:0}, index=10000, tmp=0] [L37] EXPR tmp < 10000 && array[tmp] == tmp VAL [array={2:0}, index=10000, tmp=0, tmp < 10000 && array[tmp] == tmp=1] [L37] EXPR array[tmp] VAL [array={2:0}, array[tmp]=3, index=10000, tmp=0, tmp < 10000 && array[tmp] == tmp=1] [L37] EXPR tmp < 10000 && array[tmp] == tmp VAL [array={2:0}, array[tmp]=3, index=10000, tmp=0, tmp < 10000 && array[tmp] == tmp=0] [L37] CALL __VERIFIER_assert(tmp < 10000 && array[tmp] == tmp) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 16 SDslu, 42 SDs, 0 SdLazy, 61 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...