/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:55:37,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:55:37,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:55:37,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:55:37,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:55:37,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:55:37,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:55:37,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:55:37,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:55:37,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:55:37,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:55:37,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:55:37,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:55:37,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:55:37,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:55:37,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:55:37,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:55:37,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:55:37,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:55:37,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:55:37,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:55:37,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:55:37,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:55:37,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:55:37,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:55:37,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:55:37,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:55:37,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:55:37,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:55:37,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:55:37,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:55:37,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:55:37,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:55:37,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:55:37,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:55:37,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:55:37,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:55:37,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:55:37,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:55:37,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:55:37,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:55:37,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:55:37,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:55:37,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:55:37,221 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:55:37,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:55:37,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:55:37,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:55:37,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:55:37,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:55:37,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:55:37,224 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:55:37,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:55:37,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:55:37,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:55:37,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:55:37,867 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:55:37,869 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-04 17:55:38,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9878de254/e431dc2be74b44bcbcd8c23e8fa145e1/FLAG2d04984bb [2020-09-04 17:55:38,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:55:38,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-04 17:55:38,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9878de254/e431dc2be74b44bcbcd8c23e8fa145e1/FLAG2d04984bb [2020-09-04 17:55:39,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9878de254/e431dc2be74b44bcbcd8c23e8fa145e1 [2020-09-04 17:55:39,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:55:39,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:55:39,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:55:39,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:55:39,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:55:39,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39, skipping insertion in model container [2020-09-04 17:55:39,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:55:39,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:55:39,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:55:39,666 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:55:39,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:55:39,721 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:55:39,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39 WrapperNode [2020-09-04 17:55:39,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:55:39,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:55:39,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:55:39,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:55:39,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (1/1) ... [2020-09-04 17:55:39,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:55:39,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:55:39,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:55:39,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:55:39,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (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 [2020-09-04 17:55:40,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:55:40,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:55:40,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:55:40,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:55:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:55:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:55:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:55:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:55:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:55:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:55:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:55:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:55:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:55:40,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:55:40,442 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:55:40,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:55:40 BoogieIcfgContainer [2020-09-04 17:55:40,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:55:40,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:55:40,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:55:40,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:55:40,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:55:39" (1/3) ... [2020-09-04 17:55:40,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37530b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:55:40, skipping insertion in model container [2020-09-04 17:55:40,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:55:39" (2/3) ... [2020-09-04 17:55:40,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37530b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:55:40, skipping insertion in model container [2020-09-04 17:55:40,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:55:40" (3/3) ... [2020-09-04 17:55:40,469 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-09-04 17:55:40,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:55:40,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:55:40,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:55:40,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:55:40,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:55:40,687 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:55:40,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:55:40,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:55:40,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:55:40,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:55:40,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:55:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-04 17:55:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 17:55:40,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:55:40,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:55:40,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:55:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:55:40,753 INFO L82 PathProgramCache]: Analyzing trace with hash 177195790, now seen corresponding path program 1 times [2020-09-04 17:55:40,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:55:40,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575217972] [2020-09-04 17:55:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:55:40,864 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:55:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:55:41,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575217972] [2020-09-04 17:55:41,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:41,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:55:41,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964536946] [2020-09-04 17:55:41,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:55:41,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:55:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:55:41,086 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-04 17:55:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:55:41,219 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-04 17:55:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:55:41,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 17:55:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:55:41,236 INFO L225 Difference]: With dead ends: 46 [2020-09-04 17:55:41,236 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 17:55:41,243 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 [2020-09-04 17:55:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 17:55:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 17:55:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 17:55:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 17:55:41,318 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-04 17:55:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:55:41,319 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 17:55:41,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:55:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 17:55:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 17:55:41,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:55:41,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:55:41,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:55:41,323 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:55:41,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:55:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash 163342975, now seen corresponding path program 1 times [2020-09-04 17:55:41,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:55:41,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827076665] [2020-09-04 17:55:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:55:41,329 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:55:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:55:41,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827076665] [2020-09-04 17:55:41,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:41,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:55:41,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577947001] [2020-09-04 17:55:41,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:55:41,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:55:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:55:41,695 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-09-04 17:55:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:55:41,945 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-09-04 17:55:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:55:41,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-04 17:55:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:55:41,948 INFO L225 Difference]: With dead ends: 26 [2020-09-04 17:55:41,948 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:55:41,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:55:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:55:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:55:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:55:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:55:41,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-04 17:55:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:55:41,955 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:55:41,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:55:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:55:41,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:55:41,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:55:41,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:55:42,411 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,412 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-04 17:55:42,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,412 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:55:42,413 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-09-04 17:55:42,413 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 17:55:42,414 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-04 17:55:42,414 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed. [2020-09-04 17:55:42,414 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-04 17:55:42,415 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,415 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 18 32) the Hoare annotation is: true [2020-09-04 17:55:42,416 INFO L264 CegarLoopResult]: At program point L25-1(lines 25 28) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,416 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,416 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-09-04 17:55:42,417 INFO L264 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,417 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,417 INFO L271 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-09-04 17:55:42,418 INFO L264 CegarLoopResult]: At program point L25-5(lines 23 29) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,418 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-09-04 17:55:42,418 INFO L271 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-09-04 17:55:42,419 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 18 32) the Hoare annotation is: true [2020-09-04 17:55:42,419 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-09-04 17:55:42,419 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-09-04 17:55:42,420 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,420 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,420 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-04 17:55:42,421 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2020-09-04 17:55:42,421 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-09-04 17:55:42,421 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-09-04 17:55:42,422 INFO L271 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: true [2020-09-04 17:55:42,422 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-09-04 17:55:42,422 INFO L264 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:55:42,423 INFO L264 CegarLoopResult]: At program point L11(lines 11 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:55:42,423 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 10 15) the Hoare annotation is: true [2020-09-04 17:55:42,423 INFO L271 CegarLoopResult]: At program point L11-2(lines 10 15) the Hoare annotation is: true [2020-09-04 17:55:42,424 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:55:42,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:55:42 BoogieIcfgContainer [2020-09-04 17:55:42,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:55:42,471 INFO L168 Benchmark]: Toolchain (without parser) took 3267.94 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 99.4 MB in the beginning and 89.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:55:42,473 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 134.7 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:55:42,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.92 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 89.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:55:42,476 INFO L168 Benchmark]: Boogie Preprocessor took 57.94 ms. Allocated memory is still 134.7 MB. Free memory was 89.7 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:55:42,477 INFO L168 Benchmark]: RCFGBuilder took 668.91 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 88.1 MB in the beginning and 166.5 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:55:42,479 INFO L168 Benchmark]: TraceAbstraction took 2011.64 ms. Allocated memory is still 200.8 MB. Free memory was 165.8 MB in the beginning and 89.8 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:55:42,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 134.7 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 508.92 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 89.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.94 ms. Allocated memory is still 134.7 MB. Free memory was 89.7 MB in the beginning and 88.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.91 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 88.1 MB in the beginning and 166.5 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2011.64 ms. Allocated memory is still 200.8 MB. Free memory was 165.8 MB in the beginning and 89.8 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: i <= 3 * (i / 3) && 0 <= i - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 51 SDslu, 22 SDs, 0 SdLazy, 56 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 40 PreInvPairs, 48 NumberOfFragments, 137 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, 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 correct! Received shutdown request...