/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:23:17,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:23:17,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:23:17,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:23:17,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:23:17,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:23:17,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:23:17,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:23:17,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:23:17,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:23:17,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:23:17,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:23:17,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:23:17,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:23:17,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:23:17,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:23:17,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:23:17,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:23:17,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:23:17,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:23:17,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:23:17,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:23:17,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:23:17,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:23:17,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:23:17,951 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 [2019-11-06 21:23:17,971 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:23:17,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:23:17,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:23:17,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:23:17,973 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:23:17,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:23:17,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:23:17,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:23:17,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:23:17,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:23:17,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:23:17,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:23:17,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:23:17,976 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:23:17,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:23:17,976 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:23:17,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:23:17,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:23:17,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:23:17,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:23:17,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:23:17,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:23:17,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:23:17,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:23:17,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:23:17,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:23:17,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:23:17,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:23:17,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:23:18,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:23:18,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:23:18,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:23:18,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:23:18,261 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:23:18,262 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2019-11-06 21:23:18,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eca38b13/62c101e292e2486092e430b5117c9af9/FLAGadbe3ca70 [2019-11-06 21:23:18,747 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:23:18,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2019-11-06 21:23:18,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eca38b13/62c101e292e2486092e430b5117c9af9/FLAGadbe3ca70 [2019-11-06 21:23:19,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eca38b13/62c101e292e2486092e430b5117c9af9 [2019-11-06 21:23:19,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:23:19,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:23:19,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:19,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:23:19,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:23:19,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32676008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19, skipping insertion in model container [2019-11-06 21:23:19,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,181 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:23:19,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:23:19,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:19,382 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:23:19,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:19,406 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:23:19,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19 WrapperNode [2019-11-06 21:23:19,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:19,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:23:19,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:23:19,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:23:19,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (1/1) ... [2019-11-06 21:23:19,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:23:19,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:23:19,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:23:19,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:23:19,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (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 [2019-11-06 21:23:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:23:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:23:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:23:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:23:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:23:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:23:19,740 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:23:19,740 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:23:19,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:19 BoogieIcfgContainer [2019-11-06 21:23:19,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:23:19,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:23:19,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:23:19,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:23:19,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:23:19" (1/3) ... [2019-11-06 21:23:19,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8122afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:19, skipping insertion in model container [2019-11-06 21:23:19,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:19" (2/3) ... [2019-11-06 21:23:19,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8122afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:19, skipping insertion in model container [2019-11-06 21:23:19,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:19" (3/3) ... [2019-11-06 21:23:19,749 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2019-11-06 21:23:19,759 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:23:19,766 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:23:19,778 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:23:19,802 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:23:19,803 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:23:19,803 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:23:19,803 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:23:19,803 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:23:19,803 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:23:19,804 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:23:19,804 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:23:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-06 21:23:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:23:19,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:19,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:19,835 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-11-06 21:23:19,845 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:19,846 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019284645] [2019-11-06 21:23:19,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:19,933 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019284645] [2019-11-06 21:23:19,934 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:19,934 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:23:19,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207906220] [2019-11-06 21:23:19,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:23:19,940 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:23:19,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:23:19,952 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-06 21:23:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:19,973 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-11-06 21:23:19,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:23:19,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 21:23:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:19,983 INFO L225 Difference]: With dead ends: 31 [2019-11-06 21:23:19,983 INFO L226 Difference]: Without dead ends: 12 [2019-11-06 21:23:19,987 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:23:20,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-06 21:23:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-06 21:23:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-06 21:23:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-06 21:23:20,024 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-11-06 21:23:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:20,024 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-06 21:23:20,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:23:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-06 21:23:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:23:20,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:20,025 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:20,026 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:20,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2019-11-06 21:23:20,027 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:20,027 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015583854] [2019-11-06 21:23:20,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:20,075 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015583854] [2019-11-06 21:23:20,075 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:20,075 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:23:20,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105222020] [2019-11-06 21:23:20,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:23:20,077 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:23:20,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:23:20,078 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-06 21:23:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:20,122 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-06 21:23:20,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:23:20,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-06 21:23:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:20,125 INFO L225 Difference]: With dead ends: 19 [2019-11-06 21:23:20,125 INFO L226 Difference]: Without dead ends: 14 [2019-11-06 21:23:20,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:23:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-06 21:23:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-06 21:23:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-06 21:23:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-06 21:23:20,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-11-06 21:23:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:20,133 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-06 21:23:20,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:23:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-06 21:23:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:23:20,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:20,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:20,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2019-11-06 21:23:20,135 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:20,147 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945293641] [2019-11-06 21:23:20,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:20,201 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945293641] [2019-11-06 21:23:20,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072667630] [2019-11-06 21:23:20,202 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 [2019-11-06 21:23:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:23:20,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:20,269 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:20,269 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-06 21:23:20,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641260593] [2019-11-06 21:23:20,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:23:20,270 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:20,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:23:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:23:20,271 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-11-06 21:23:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:20,303 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-11-06 21:23:20,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:23:20,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-06 21:23:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:20,305 INFO L225 Difference]: With dead ends: 21 [2019-11-06 21:23:20,305 INFO L226 Difference]: Without dead ends: 16 [2019-11-06 21:23:20,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:23:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-06 21:23:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-06 21:23:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-06 21:23:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-06 21:23:20,310 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-11-06 21:23:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:20,311 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-06 21:23:20,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:23:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-06 21:23:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:23:20,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:20,312 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:20,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:20,514 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1607619511, now seen corresponding path program 2 times [2019-11-06 21:23:20,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:20,516 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082801625] [2019-11-06 21:23:20,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:23:20,649 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082801625] [2019-11-06 21:23:20,649 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:20,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:23:20,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488558518] [2019-11-06 21:23:20,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:23:20,651 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:23:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:23:20,652 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2019-11-06 21:23:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:20,694 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-06 21:23:20,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:23:20,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-06 21:23:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:20,695 INFO L225 Difference]: With dead ends: 15 [2019-11-06 21:23:20,695 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:23:20,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:23:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:23:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:23:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:23:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:23:20,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-06 21:23:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:20,697 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:23:20,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:23:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:23:20,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:23:20,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:23:20,765 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:23:20,765 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:20,765 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:20,765 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:23:20,766 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:23:20,766 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:20,766 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 15) the Hoare annotation is: true [2019-11-06 21:23:20,766 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 15) no Hoare annotation was computed. [2019-11-06 21:23:20,766 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-06 21:23:20,766 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 15) no Hoare annotation was computed. [2019-11-06 21:23:20,766 INFO L443 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2019-11-06 21:23:20,767 INFO L439 ceAbstractionStarter]: At program point L12-3(line 12) the Hoare annotation is: (<= main_~i~0 1000000) [2019-11-06 21:23:20,767 INFO L439 ceAbstractionStarter]: At program point L12-4(line 12) the Hoare annotation is: (and (< 999999 main_~i~0) (<= main_~i~0 1000000)) [2019-11-06 21:23:20,767 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:23:20,767 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:20,768 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:23:20,768 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:23:20,768 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:23:20,768 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:20,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:23:20 BoogieIcfgContainer [2019-11-06 21:23:20,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:23:20,784 INFO L168 Benchmark]: Toolchain (without parser) took 1622.09 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 118.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,785 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.26 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,787 INFO L168 Benchmark]: Boogie Preprocessor took 109.99 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 94.1 MB in the beginning and 181.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,788 INFO L168 Benchmark]: RCFGBuilder took 223.76 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 170.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,789 INFO L168 Benchmark]: TraceAbstraction took 1038.67 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 118.8 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:20,793 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.26 ms. Allocated memory is still 145.8 MB. Free memory was 103.3 MB in the beginning and 94.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.99 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 94.1 MB in the beginning and 181.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 223.76 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 170.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1038.67 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 118.8 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 7 SDslu, 40 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 15 HoareAnnotationTreeSize, 10 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 931 SizeOfPredicates, 1 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 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...