/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-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:44:06,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:44:06,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:44:06,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:44:06,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:44:06,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:44:06,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:44:06,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:44:06,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:44:06,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:44:06,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:44:06,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:44:06,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:44:06,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:44:06,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:44:06,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:44:06,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:44:06,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:44:06,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:44:06,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:44:06,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:44:06,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:44:06,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:44:06,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:44:06,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:44:06,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:44:06,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:44:06,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:44:06,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:44:06,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:44:06,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:44:06,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:44:06,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:44:06,261 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:44:06,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:44:06,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:44:06,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:44:06,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:44:06,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:44:06,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:44:06,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:44:06,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:44:06,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:44:06,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:44:06,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:44:06,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:44:06,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:44:06,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:44:06,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:44:06,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:44:06,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:06,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:44:06,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:44:06,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:44:06,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:44:06,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:44:06,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:44:06,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:44:06,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:44:06,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:44:06,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:44:06,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:44:06,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:44:06,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:44:06,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-04 13:44:06,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f322afb3/c284df7ed7704a87b8812cca8bf3cf1f/FLAGd85a47f1f [2020-09-04 13:44:07,441 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:44:07,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-09-04 13:44:07,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f322afb3/c284df7ed7704a87b8812cca8bf3cf1f/FLAGd85a47f1f [2020-09-04 13:44:07,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f322afb3/c284df7ed7704a87b8812cca8bf3cf1f [2020-09-04 13:44:07,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:44:07,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:44:07,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:07,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:44:07,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:44:07,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:07" (1/1) ... [2020-09-04 13:44:07,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6d7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:07, skipping insertion in model container [2020-09-04 13:44:07,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:07" (1/1) ... [2020-09-04 13:44:07,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:44:07,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:44:08,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:08,092 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:44:08,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:08,137 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:44:08,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08 WrapperNode [2020-09-04 13:44:08,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:08,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:44:08,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:44:08,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:44:08,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:44:08,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:44:08,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:44:08,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:44:08,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:44:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:44:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:44:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:44:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:44:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:44:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:44:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:44:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:44:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:44:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:44:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:44:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:44:08,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:44:08,667 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:44:08,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:08 BoogieIcfgContainer [2020-09-04 13:44:08,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:44:08,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:44:08,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:44:08,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:44:08,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:44:07" (1/3) ... [2020-09-04 13:44:08,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3132c5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:08, skipping insertion in model container [2020-09-04 13:44:08,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08" (2/3) ... [2020-09-04 13:44:08,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3132c5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:08, skipping insertion in model container [2020-09-04 13:44:08,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:08" (3/3) ... [2020-09-04 13:44:08,707 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-09-04 13:44:08,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:44:08,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:44:08,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:44:08,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:44:08,790 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:44:08,790 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:44:08,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:44:08,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:44:08,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:44:08,791 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:44:08,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:44:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-04 13:44:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:44:08,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:08,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:08,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-09-04 13:44:08,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:08,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718024648] [2020-09-04 13:44:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:09,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718024648] [2020-09-04 13:44:09,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:09,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:44:09,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037176816] [2020-09-04 13:44:09,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:44:09,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:44:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:44:09,239 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-09-04 13:44:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:09,635 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-09-04 13:44:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:44:09,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-04 13:44:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:09,650 INFO L225 Difference]: With dead ends: 68 [2020-09-04 13:44:09,650 INFO L226 Difference]: Without dead ends: 36 [2020-09-04 13:44:09,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:44:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-04 13:44:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-09-04 13:44:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:44:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-04 13:44:09,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-09-04 13:44:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:09,715 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-04 13:44:09,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:44:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-04 13:44:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 13:44:09,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:09,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:09,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:44:09,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:09,719 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-09-04 13:44:09,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:09,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74094975] [2020-09-04 13:44:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 13:44:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:44:09,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74094975] [2020-09-04 13:44:09,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:09,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:44:09,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608057869] [2020-09-04 13:44:09,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:44:09,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:44:09,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:44:09,831 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-09-04 13:44:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,023 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-04 13:44:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:44:10,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-04 13:44:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,028 INFO L225 Difference]: With dead ends: 57 [2020-09-04 13:44:10,028 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 13:44:10,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:44:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 13:44:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-09-04 13:44:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:44:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-04 13:44:10,039 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-09-04 13:44:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,040 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-04 13:44:10,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:44:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-04 13:44:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:44:10,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:44:10,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-09-04 13:44:10,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694837573] [2020-09-04 13:44:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-04 13:44:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694837573] [2020-09-04 13:44:10,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013239723] [2020-09-04 13:44:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:44:10,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:10,300 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Possible infinite loop detected aux_div_47 already exists [2020-09-04 13:44:10,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:44:10,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:44:10,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402468587] [2020-09-04 13:44:10,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:44:10,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:44:10,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:44:10,303 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-04 13:44:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,545 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-04 13:44:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:44:10,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-04 13:44:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,548 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:44:10,548 INFO L226 Difference]: Without dead ends: 51 [2020-09-04 13:44:10,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:44:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-04 13:44:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-09-04 13:44:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 13:44:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-04 13:44:10,565 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-09-04 13:44:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,568 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-04 13:44:10,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:44:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-04 13:44:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 13:44:10,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,571 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:44:10,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-09-04 13:44:10,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154826703] [2020-09-04 13:44:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:44:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:44:10,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154826703] [2020-09-04 13:44:10,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583198994] [2020-09-04 13:44:10,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:10,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-04 13:44:10,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:10,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:44:10,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:11,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:44:11,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:11,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-09-04 13:44:11,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842112516] [2020-09-04 13:44:11,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 13:44:11,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:11,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 13:44:11,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:44:11,064 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 11 states. [2020-09-04 13:44:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:11,407 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-04 13:44:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 13:44:11,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-09-04 13:44:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:11,412 INFO L225 Difference]: With dead ends: 66 [2020-09-04 13:44:11,412 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:44:11,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-04 13:44:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:44:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:44:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:44:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:44:11,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-09-04 13:44:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:11,414 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:44:11,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 13:44:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:44:11,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:44:11,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:11,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:44:11,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,978 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) [2020-09-04 13:44:11,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,978 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:44:11,978 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:44:11,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,979 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,979 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:44:11,979 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,979 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,979 INFO L271 CegarLoopResult]: At program point L27(lines 14 29) the Hoare annotation is: true [2020-09-04 13:44:11,979 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2020-09-04 13:44:11,980 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-09-04 13:44:11,980 INFO L264 CegarLoopResult]: At program point L23-3(lines 23 26) the Hoare annotation is: (<= 0 main_~i~0) [2020-09-04 13:44:11,980 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-04 13:44:11,980 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2020-09-04 13:44:11,980 INFO L264 CegarLoopResult]: At program point L24-3(lines 24 26) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~n~0)) [2020-09-04 13:44:11,980 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-04 13:44:11,981 INFO L264 CegarLoopResult]: At program point L25-2(lines 25 26) the Hoare annotation is: (let ((.cse0 (< main_~j~0 (* 3 main_~i~0))) (.cse1 (< main_~i~0 main_~n~0))) (or (and (<= main_~j~0 main_~k~0) (<= 0 main_~i~0) (<= (+ main_~k~0 2) (+ main_~i~0 (* 2 main_~n~0))) .cse0 .cse1) (and (<= 1 main_~i~0) .cse0 .cse1))) [2020-09-04 13:44:11,981 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-04 13:44:11,981 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2020-09-04 13:44:11,981 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 29) the Hoare annotation is: true [2020-09-04 13:44:11,981 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 3 main_~i~0))) (and (<= 1 main_~i~0) (<= (+ main_~k~0 2) .cse0) (< main_~j~0 .cse0) (< main_~i~0 main_~n~0))) [2020-09-04 13:44:11,982 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 26) no Hoare annotation was computed. [2020-09-04 13:44:11,982 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-04 13:44:11,982 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-04 13:44:11,982 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:44:11,982 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:11,983 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:44:11,983 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:44:11,983 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:11,983 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:44:12,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:44:12 BoogieIcfgContainer [2020-09-04 13:44:12,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:44:12,011 INFO L168 Benchmark]: Toolchain (without parser) took 4198.82 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 102.7 MB in the beginning and 182.4 MB in the end (delta: -79.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,013 INFO L168 Benchmark]: CDTParser took 1.45 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.95 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,015 INFO L168 Benchmark]: Boogie Preprocessor took 127.36 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 182.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,016 INFO L168 Benchmark]: RCFGBuilder took 407.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 166.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,017 INFO L168 Benchmark]: TraceAbstraction took 3322.30 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 165.3 MB in the beginning and 182.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:12,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.95 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.36 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 182.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 166.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3322.30 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 165.3 MB in the beginning and 182.4 MB in the end (delta: -17.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((j <= k && 0 <= i) && k + 2 <= i + 2 * n) && j < 3 * i) && i < n) || ((1 <= i && j < 3 * i) && i < n) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 <= i && i < n - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 186 SDslu, 140 SDs, 0 SdLazy, 473 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 41 NumberOfFragments, 74 HoareAnnotationTreeSize, 19 FomulaSimplifications, 1199 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 258 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 133 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 6684 SizeOfPredicates, 3 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 28/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...