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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:06:41,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:06:41,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:06:41,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:06:41,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:06:41,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:06:41,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:06:41,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:06:41,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:06:41,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:06:41,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:06:41,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:06:41,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:06:41,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:06:41,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:06:41,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:06:41,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:06:41,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:06:41,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:06:41,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:06:41,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:06:41,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:06:41,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:06:41,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:06:41,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:06:41,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:06:41,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:06:41,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:06:41,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:06:42,015 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:06:42,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:06:42,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:06:42,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:06:42,021 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:06:42,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:06:42,021 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:06:42,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:06:42,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:06:42,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:06:42,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:06:42,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:06:42,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:06:42,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:06:42,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:06:42,025 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:06:42,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:06:42,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:06:42,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:06:42,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:06:42,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:06:42,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:06:42,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:06:42,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:06:42,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:06:42,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:06:42,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:06:42,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:06:42,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:06:42,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:06:42,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:06:42,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:06:42,355 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:06:42,356 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:06:42,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2019-10-13 21:06:42,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4254d2d17/fc4694d6803340c98637324ca2ed6b91/FLAGa02e28cfa [2019-10-13 21:06:42,876 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:06:42,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2019-10-13 21:06:42,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4254d2d17/fc4694d6803340c98637324ca2ed6b91/FLAGa02e28cfa [2019-10-13 21:06:43,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4254d2d17/fc4694d6803340c98637324ca2ed6b91 [2019-10-13 21:06:43,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:06:43,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:06:43,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:06:43,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:06:43,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:06:43,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ed2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43, skipping insertion in model container [2019-10-13 21:06:43,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,285 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:06:43,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:06:43,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:43,462 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:06:43,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:43,490 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:06:43,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43 WrapperNode [2019-10-13 21:06:43,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:06:43,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:06:43,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:06:43,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:06:43,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (1/1) ... [2019-10-13 21:06:43,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:06:43,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:06:43,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:06:43,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:06:43,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (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 [2019-10-13 21:06:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:06:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:06:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:06:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:06:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:06:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:06:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:06:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:06:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:06:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:06:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:06:43,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:06:43,794 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:06:43,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:43 BoogieIcfgContainer [2019-10-13 21:06:43,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:06:43,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:06:43,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:06:43,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:06:43,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:06:43" (1/3) ... [2019-10-13 21:06:43,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63af80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:43, skipping insertion in model container [2019-10-13 21:06:43,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:43" (2/3) ... [2019-10-13 21:06:43,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63af80b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:43, skipping insertion in model container [2019-10-13 21:06:43,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:43" (3/3) ... [2019-10-13 21:06:43,803 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2019-10-13 21:06:43,812 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:06:43,818 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:06:43,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:06:43,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:06:43,850 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:06:43,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:06:43,850 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:06:43,850 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:06:43,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:06:43,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:06:43,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:06:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 21:06:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:06:43,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:43,873 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:43,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-10-13 21:06:43,887 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:43,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507324529] [2019-10-13 21:06:43,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:43,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:43,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:43,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507324529] [2019-10-13 21:06:43,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:43,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:06:43,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028722796] [2019-10-13 21:06:43,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:06:43,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:06:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:06:43,990 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-13 21:06:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:44,012 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-10-13 21:06:44,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:06:44,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 21:06:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:44,022 INFO L225 Difference]: With dead ends: 31 [2019-10-13 21:06:44,022 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 21:06:44,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:06:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 21:06:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 21:06:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 21:06:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-13 21:06:44,063 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-13 21:06:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:44,064 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-13 21:06:44,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:06:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-13 21:06:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:06:44,065 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:44,065 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:44,066 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2019-10-13 21:06:44,066 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:44,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930158988] [2019-10-13 21:06:44,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,067 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:44,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930158988] [2019-10-13 21:06:44,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:44,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:06:44,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055032780] [2019-10-13 21:06:44,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:06:44,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:44,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:06:44,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:06:44,131 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-10-13 21:06:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:44,181 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-13 21:06:44,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:06:44,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 21:06:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:44,183 INFO L225 Difference]: With dead ends: 19 [2019-10-13 21:06:44,183 INFO L226 Difference]: Without dead ends: 14 [2019-10-13 21:06:44,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:06:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-13 21:06:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-10-13 21:06:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 21:06:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-13 21:06:44,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-10-13 21:06:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:44,190 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-13 21:06:44,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:06:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-13 21:06:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:06:44,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:44,191 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:44,191 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2019-10-13 21:06:44,192 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:44,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929066444] [2019-10-13 21:06:44,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:44,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929066444] [2019-10-13 21:06:44,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092903112] [2019-10-13 21:06:44,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:44,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:06:44,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:06:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:44,330 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:06:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:44,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1167427609] [2019-10-13 21:06:44,377 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 13 [2019-10-13 21:06:44,409 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:06:44,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:06:44,509 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-13 21:06:44,511 INFO L272 AbstractInterpreter]: Visited 12 different actions 27 times. Merged at 2 different actions 10 times. Widened at 1 different actions 1 times. Performed 45 root evaluator evaluations with a maximum evaluation depth of 4. Performed 45 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2019-10-13 21:06:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:44,516 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:06:44,517 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:44,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2019-10-13 21:06:44,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991433936] [2019-10-13 21:06:44,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:06:44,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:06:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:06:44,519 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-10-13 21:06:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:44,571 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-10-13 21:06:44,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:06:44,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-13 21:06:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:44,576 INFO L225 Difference]: With dead ends: 24 [2019-10-13 21:06:44,577 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 21:06:44,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:06:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 21:06:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 21:06:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:06:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-13 21:06:44,589 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2019-10-13 21:06:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:44,590 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-13 21:06:44,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:06:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-13 21:06:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:06:44,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:44,592 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:44,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:44,795 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 263802547, now seen corresponding path program 2 times [2019-10-13 21:06:44,797 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:44,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814903767] [2019-10-13 21:06:44,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:44,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:06:44,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814903767] [2019-10-13 21:06:44,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:44,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:06:44,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991099173] [2019-10-13 21:06:44,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:06:44,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:44,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:06:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:06:44,946 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2019-10-13 21:06:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:44,986 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-13 21:06:44,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:06:44,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-10-13 21:06:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:44,987 INFO L225 Difference]: With dead ends: 19 [2019-10-13 21:06:44,987 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:06:44,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:06:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:06:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:06:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:06:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:06:44,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-13 21:06:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:44,989 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:06:44,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:06:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:06:44,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:06:44,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:06:45,042 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 21:06:45,043 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:45,043 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:45,043 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:06:45,043 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:06:45,043 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:06:45,043 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 15) the Hoare annotation is: true [2019-10-13 21:06:45,044 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 15) no Hoare annotation was computed. [2019-10-13 21:06:45,044 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-10-13 21:06:45,044 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 15) no Hoare annotation was computed. [2019-10-13 21:06:45,044 INFO L443 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-10-13 21:06:45,044 INFO L439 ceAbstractionStarter]: At program point L12-3(line 12) the Hoare annotation is: (<= main_~i~0 1000000) [2019-10-13 21:06:45,045 INFO L439 ceAbstractionStarter]: At program point L12-4(line 12) the Hoare annotation is: (and (< 999999 main_~i~0) (<= main_~i~0 1000000)) [2019-10-13 21:06:45,046 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 21:06:45,046 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:45,046 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 21:06:45,047 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 21:06:45,047 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 21:06:45,047 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:45,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:06:45 BoogieIcfgContainer [2019-10-13 21:06:45,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:06:45,071 INFO L168 Benchmark]: Toolchain (without parser) took 1801.50 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 103.8 MB in the beginning and 107.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,075 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.91 ms. Allocated memory is still 138.4 MB. Free memory was 103.6 MB in the beginning and 94.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,079 INFO L168 Benchmark]: Boogie Preprocessor took 103.38 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 94.6 MB in the beginning and 180.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,086 INFO L168 Benchmark]: RCFGBuilder took 199.81 ms. Allocated memory is still 200.3 MB. Free memory was 180.6 MB in the beginning and 169.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,087 INFO L168 Benchmark]: TraceAbstraction took 1271.68 ms. Allocated memory is still 200.3 MB. Free memory was 169.2 MB in the beginning and 107.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:45,101 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.91 ms. Allocated memory is still 138.4 MB. Free memory was 103.6 MB in the beginning and 94.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.38 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 94.6 MB in the beginning and 180.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 199.81 ms. Allocated memory is still 200.3 MB. Free memory was 180.6 MB in the beginning and 169.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1271.68 ms. Allocated memory is still 200.3 MB. Free memory was 169.2 MB in the beginning and 107.0 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 9 SDslu, 45 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 10 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1302 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 16/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...