/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:35:50,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:35:50,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:35:50,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:35:50,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:35:50,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:35:50,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:35:50,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:35:50,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:35:50,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:35:50,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:35:50,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:35:50,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:35:50,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:35:50,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:35:50,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:35:50,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:35:50,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:35:50,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:35:50,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:35:50,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:35:50,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:35:50,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:35:50,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:35:50,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:35:50,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:35:50,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:35:50,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:35:50,066 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 [2019-11-07 00:35:50,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:35:50,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:35:50,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:35:50,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:35:50,082 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:35:50,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:35:50,082 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:35:50,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:35:50,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:35:50,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:35:50,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:35:50,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:35:50,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:35:50,084 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:35:50,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:35:50,084 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:35:50,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:35:50,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:35:50,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:35:50,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:35:50,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:35:50,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:50,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:35:50,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:35:50,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:35:50,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:35:50,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:35:50,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:35:50,087 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 [2019-11-07 00:35:50,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:35:50,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:35:50,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:35:50,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:35:50,413 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:35:50,414 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2019-11-07 00:35:50,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fc4888/bc1d3e633b244222913b6e643ebda985/FLAGa0aee0ff1 [2019-11-07 00:35:50,904 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:35:50,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2019-11-07 00:35:50,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fc4888/bc1d3e633b244222913b6e643ebda985/FLAGa0aee0ff1 [2019-11-07 00:35:51,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88fc4888/bc1d3e633b244222913b6e643ebda985 [2019-11-07 00:35:51,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:35:51,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:35:51,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:51,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:35:51,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:35:51,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c36b6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51, skipping insertion in model container [2019-11-07 00:35:51,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,335 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:35:51,356 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:35:51,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:51,533 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:35:51,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:51,566 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:35:51,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51 WrapperNode [2019-11-07 00:35:51,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:51,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:35:51,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:35:51,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:35:51,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (1/1) ... [2019-11-07 00:35:51,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:35:51,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:35:51,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:35:51,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:35:51,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (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 [2019-11-07 00:35:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:35:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:35:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:35:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:35:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:35:51,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:35:51,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:35:51,918 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:35:51,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:51 BoogieIcfgContainer [2019-11-07 00:35:51,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:35:51,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:35:51,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:35:51,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:35:51,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:35:51" (1/3) ... [2019-11-07 00:35:51,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a52daeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:51, skipping insertion in model container [2019-11-07 00:35:51,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:51" (2/3) ... [2019-11-07 00:35:51,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a52daeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:51, skipping insertion in model container [2019-11-07 00:35:51,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:51" (3/3) ... [2019-11-07 00:35:51,928 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-11-07 00:35:51,939 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:35:51,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:35:51,960 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:35:52,005 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:35:52,006 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:35:52,006 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:35:52,006 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:35:52,006 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:35:52,007 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:35:52,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:35:52,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:35:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-07 00:35:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 00:35:52,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:52,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:52,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:52,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:52,053 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2019-11-07 00:35:52,090 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:52,091 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665262802] [2019-11-07 00:35:52,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:52,185 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665262802] [2019-11-07 00:35:52,186 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:52,186 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:35:52,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063489971] [2019-11-07 00:35:52,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:35:52,193 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:52,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:35:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:52,208 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-07 00:35:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:52,230 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-07 00:35:52,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:35:52,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-07 00:35:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:52,239 INFO L225 Difference]: With dead ends: 30 [2019-11-07 00:35:52,239 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 00:35:52,243 INFO L630 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 [2019-11-07 00:35:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 00:35:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 00:35:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 00:35:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 00:35:52,288 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 00:35:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:52,288 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 00:35:52,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:35:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 00:35:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 00:35:52,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:52,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:52,290 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2019-11-07 00:35:52,292 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:52,293 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769686608] [2019-11-07 00:35:52,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:52,508 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769686608] [2019-11-07 00:35:52,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:52,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:35:52,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590048250] [2019-11-07 00:35:52,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:35:52,513 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:35:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:35:52,519 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-11-07 00:35:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:52,606 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-07 00:35:52,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:35:52,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-07 00:35:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:52,609 INFO L225 Difference]: With dead ends: 19 [2019-11-07 00:35:52,610 INFO L226 Difference]: Without dead ends: 14 [2019-11-07 00:35:52,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:35:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-07 00:35:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-07 00:35:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 00:35:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-07 00:35:52,622 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-11-07 00:35:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:52,623 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-07 00:35:52,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:35:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-07 00:35:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 00:35:52,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:52,625 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:52,626 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2019-11-07 00:35:52,627 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:52,627 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35491617] [2019-11-07 00:35:52,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:52,904 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35491617] [2019-11-07 00:35:52,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821803594] [2019-11-07 00:35:52,906 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 [2019-11-07 00:35:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:52,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 00:35:52,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:53,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:53,191 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:53,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1863980902] [2019-11-07 00:35:53,411 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-11-07 00:35:53,457 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:35:53,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:35:53,667 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:35:53,670 INFO L272 AbstractInterpreter]: Visited 13 different actions 48 times. Merged at 3 different actions 15 times. Widened at 1 different actions 3 times. Performed 77 root evaluator evaluations with a maximum evaluation depth of 6. Performed 77 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-11-07 00:35:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:53,675 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:53,676 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:53,676 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2019-11-07 00:35:53,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758816741] [2019-11-07 00:35:53,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 00:35:53,677 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:53,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 00:35:53,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:35:53,679 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 20 states. [2019-11-07 00:35:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:53,867 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-11-07 00:35:53,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:35:53,869 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 13 [2019-11-07 00:35:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:53,869 INFO L225 Difference]: With dead ends: 24 [2019-11-07 00:35:53,869 INFO L226 Difference]: Without dead ends: 18 [2019-11-07 00:35:53,873 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:35:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-07 00:35:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-07 00:35:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-07 00:35:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-07 00:35:53,879 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2019-11-07 00:35:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:53,880 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-07 00:35:53,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 00:35:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-07 00:35:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 00:35:53,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:53,883 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:54,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:54,084 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2019-11-07 00:35:54,085 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:54,086 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871023709] [2019-11-07 00:35:54,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:35:54,308 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871023709] [2019-11-07 00:35:54,308 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417949086] [2019-11-07 00:35:54,308 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:54,349 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-07 00:35:54,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:54,351 WARN L254 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-07 00:35:54,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:54,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,580 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:54,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [698602636] [2019-11-07 00:35:54,956 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:54,956 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:54,957 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:54,957 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2019-11-07 00:35:54,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515486724] [2019-11-07 00:35:54,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-07 00:35:54,958 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:54,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-07 00:35:54,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2019-11-07 00:35:54,959 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 29 states. [2019-11-07 00:35:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:55,371 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-07 00:35:55,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:35:55,374 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 17 [2019-11-07 00:35:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:55,375 INFO L225 Difference]: With dead ends: 21 [2019-11-07 00:35:55,375 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:35:55,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:35:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:35:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:35:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:35:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:35:55,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-07 00:35:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:55,378 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:35:55,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-07 00:35:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:35:55,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:35:55,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:55,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:35:55,685 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:35:55,686 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:55,686 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:55,686 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:35:55,686 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:35:55,686 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:35:55,687 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2019-11-07 00:35:55,687 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2019-11-07 00:35:55,687 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-07 00:35:55,687 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2019-11-07 00:35:55,687 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-11-07 00:35:55,687 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (and (= main_~i~0 1) (<= main_~sn~0 0) (<= 0 main_~sn~0)) (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1))))) [2019-11-07 00:35:55,688 INFO L439 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (= (* 2 main_~n~0) main_~sn~0) (= 0 main_~sn~0)) [2019-11-07 00:35:55,688 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-11-07 00:35:55,688 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-11-07 00:35:55,688 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-07 00:35:55,688 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-07 00:35:55,688 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-07 00:35:55,689 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-11-07 00:35:55,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:35:55 BoogieIcfgContainer [2019-11-07 00:35:55,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:35:55,706 INFO L168 Benchmark]: Toolchain (without parser) took 4386.08 ms. Allocated memory was 143.7 MB in the beginning and 249.6 MB in the end (delta: 105.9 MB). Free memory was 101.8 MB in the beginning and 140.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,707 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.63 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,709 INFO L168 Benchmark]: Boogie Preprocessor took 115.61 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,709 INFO L168 Benchmark]: RCFGBuilder took 236.02 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 167.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,711 INFO L168 Benchmark]: TraceAbstraction took 3782.61 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 167.1 MB in the beginning and 140.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:55,715 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 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.63 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.61 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.02 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 167.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3782.61 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 167.1 MB in the beginning and 140.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((i == 1 && sn <= 0) && 0 <= sn) || ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 23 SDslu, 167 SDs, 0 SdLazy, 223 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.6s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 47 HoareAnnotationTreeSize, 12 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 10920 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 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...