/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/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:52,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:52,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:52,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:52,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:52,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:52,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:52,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:52,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:52,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:52,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:52,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:52,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:52,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:52,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:53,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:53,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:53,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:53,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:53,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:53,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:53,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:53,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:53,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:53,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:58:53,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:53,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:53,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:53,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:58:53,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:53,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:53,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:53,049 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:53,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:53,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:53,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:53,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:53,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:53,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:53,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:53,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:53,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:53,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:53,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:53,052 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:53,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:53,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:53,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:53,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:53,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:53,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:53,054 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:53,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:53,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:53,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:53,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:53,410 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:53,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-07-07 13:58:53,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c68b355/6363c06f33604c6f97476eb7b011d363/FLAG6ff3acd19 [2020-07-07 13:58:53,918 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:53,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-07-07 13:58:53,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c68b355/6363c06f33604c6f97476eb7b011d363/FLAG6ff3acd19 [2020-07-07 13:58:54,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c68b355/6363c06f33604c6f97476eb7b011d363 [2020-07-07 13:58:54,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:54,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:54,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:54,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:54,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:54,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4ef7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:54,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:54,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:54,535 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:54,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:54,567 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:54,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54 WrapperNode [2020-07-07 13:58:54,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:54,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:54,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:54,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:54,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:54,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:54,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:54,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:54,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (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 [2020-07-07 13:58:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:58:54,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:54,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:54,951 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:58:54,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:54 BoogieIcfgContainer [2020-07-07 13:58:54,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:54,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:54,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:54,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:54,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:54" (1/3) ... [2020-07-07 13:58:54,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaaba1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (2/3) ... [2020-07-07 13:58:54,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaaba1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:54" (3/3) ... [2020-07-07 13:58:54,965 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-07-07 13:58:54,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:54,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:55,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:55,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:55,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:55,022 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:55,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:55,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:55,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:55,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:55,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-07 13:58:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 13:58:55,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:55,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2078788022, now seen corresponding path program 1 times [2020-07-07 13:58:55,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417304447] [2020-07-07 13:58:55,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:55,265 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:55,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417304447] [2020-07-07 13:58:55,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:55,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:58:55,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655449465] [2020-07-07 13:58:55,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:58:55,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:58:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:55,310 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-07-07 13:58:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:55,405 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-07-07 13:58:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:58:55,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-07 13:58:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:55,417 INFO L225 Difference]: With dead ends: 48 [2020-07-07 13:58:55,417 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 13:58:55,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:58:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 13:58:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-07 13:58:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 13:58:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-07 13:58:55,465 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-07 13:58:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:55,465 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-07 13:58:55,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:58:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-07 13:58:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 13:58:55,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,467 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] [2020-07-07 13:58:55,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:55,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,469 INFO L82 PathProgramCache]: Analyzing trace with hash 493290783, now seen corresponding path program 1 times [2020-07-07 13:58:55,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756902964] [2020-07-07 13:58:55,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.001s / 0.001s total Resizing node table from 37 to 73 [2020-07-07 13:58:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:58,162 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:58,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756902964] [2020-07-07 13:58:58,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:58,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:58:58,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929034287] [2020-07-07 13:58:58,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:58:58,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:58,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:58:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:58:58,167 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2020-07-07 13:58:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:58,324 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-07 13:58:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:58:58,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-07-07 13:58:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:58,325 INFO L225 Difference]: With dead ends: 23 [2020-07-07 13:58:58,326 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:58:58,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:58:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:58:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:58:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:58:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:58:58,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-07 13:58:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:58,330 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:58:58,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:58:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:58:58,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:58:58,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:58,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:58:58,580 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,580 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,580 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,581 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,581 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,581 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:58:58,581 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2020-07-07 13:58:58,581 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= main_~i~0 main_~n~0) (<= .cse1 .cse0))) [2020-07-07 13:58:58,582 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= 0 main_~sn~0) [2020-07-07 13:58:58,582 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2020-07-07 13:58:58,582 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (= 0 main_~sn~0) [2020-07-07 13:58:58,582 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-07-07 13:58:58,582 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= 0 main_~sn~0) [2020-07-07 13:58:58,582 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-07-07 13:58:58,583 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-07-07 13:58:58,583 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= main_~sn~0 .cse0) (<= main_~i~0 main_~n~0) (<= .cse0 main_~sn~0))) [2020-07-07 13:58:58,583 INFO L271 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-07-07 13:58:58,583 INFO L264 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= main_~sn~0 .cse0) (<= main_~i~0 main_~n~0) (<= .cse0 main_~sn~0) (= |main_#t~post1| main_~i~0))) [2020-07-07 13:58:58,584 INFO L271 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-07-07 13:58:58,584 INFO L264 CegarLoopResult]: At program point L14-5(line 14) the Hoare annotation is: (let ((.cse0 (* 2 |main_#t~post1|))) (and (= main_~i~0 (+ |main_#t~post1| 1)) (<= main_~sn~0 .cse0) (<= .cse0 main_~sn~0) (<= |main_#t~post1| main_~n~0))) [2020-07-07 13:58:58,584 INFO L264 CegarLoopResult]: At program point L14-6(lines 14 16) the Hoare annotation is: (let ((.cse3 (+ main_~sn~0 2)) (.cse2 (* 2 main_~i~0))) (let ((.cse0 (<= .cse3 .cse2)) (.cse1 (<= .cse2 .cse3))) (or (and .cse0 .cse1 (= 0 main_~sn~0)) (and (<= main_~i~0 (+ main_~n~0 1)) .cse0 .cse1)))) [2020-07-07 13:58:58,584 INFO L264 CegarLoopResult]: At program point L14-7(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= main_~i~0 (+ main_~n~0 1)) (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~n~0 main_~i~0))) (= 0 main_~sn~0)) [2020-07-07 13:58:58,585 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-07-07 13:58:58,585 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 4 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:58:58,585 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 13:58:58,585 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:58:58,586 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 13:58:58,586 INFO L264 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 13:58:58,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:58:58 BoogieIcfgContainer [2020-07-07 13:58:58,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:58:58,610 INFO L168 Benchmark]: Toolchain (without parser) took 4306.47 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 103.6 MB in the beginning and 159.2 MB in the end (delta: -55.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,611 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 145.2 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.88 ms. Allocated memory is still 145.2 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,613 INFO L168 Benchmark]: Boogie Preprocessor took 115.07 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.8 MB in the beginning and 182.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,614 INFO L168 Benchmark]: RCFGBuilder took 271.21 ms. Allocated memory is still 202.4 MB. Free memory was 182.5 MB in the beginning and 169.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,615 INFO L168 Benchmark]: TraceAbstraction took 3650.38 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.6 MB in the beginning and 159.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:58,620 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 145.2 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.88 ms. Allocated memory is still 145.2 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.07 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.8 MB in the beginning and 182.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.21 ms. Allocated memory is still 202.4 MB. Free memory was 182.5 MB in the beginning and 169.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3650.38 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.6 MB in the beginning and 159.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && 0 == sn) || ((i <= n + 1 && sn + 2 <= 2 * i) && 2 * i <= sn + 2) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 17 SDslu, 155 SDs, 0 SdLazy, 98 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 40 PreInvPairs, 54 NumberOfFragments, 187 HoareAnnotationTreeSize, 40 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...