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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:03:08,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:03:08,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:03:08,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:03:08,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:03:08,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:03:08,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:03:08,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:03:08,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:03:08,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:03:08,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:03:08,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:03:08,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:03:08,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:03:08,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:03:08,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:03:08,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:03:08,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:03:08,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:03:08,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:03:08,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:03:08,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:03:08,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:03:08,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:03:08,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:03:08,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:03:08,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:03:08,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:03:08,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:03:08,262 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:03:08,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:03:08,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:03:08,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:03:08,265 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:03:08,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:03:08,266 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:03:08,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:03:08,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:03:08,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:03:08,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:03:08,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:03:08,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:03:08,268 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:03:08,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:03:08,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:03:08,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:03:08,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:03:08,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:03:08,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:03:08,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:03:08,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:03:08,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:03:08,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:03:08,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:03:08,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:03:08,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:03:08,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:03:08,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:03:08,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:03:08,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:03:08,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:03:08,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:03:08,637 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:03:08,638 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-10-15 03:03:08,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c678ece36/bc162baea8b44625ad2c2666d4b3133b/FLAG8278ab10a [2019-10-15 03:03:09,209 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:03:09,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+cfa-reducer.c [2019-10-15 03:03:09,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c678ece36/bc162baea8b44625ad2c2666d4b3133b/FLAG8278ab10a [2019-10-15 03:03:09,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c678ece36/bc162baea8b44625ad2c2666d4b3133b [2019-10-15 03:03:09,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:03:09,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:03:09,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:03:09,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:03:09,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:03:09,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:09,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5420840d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09, skipping insertion in model container [2019-10-15 03:03:09,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:09,627 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:03:09,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:03:09,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:03:09,889 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:03:09,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:03:09,916 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:03:09,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09 WrapperNode [2019-10-15 03:03:09,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:03:09,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:03:09,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:03:09,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:03:09,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:09,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... [2019-10-15 03:03:10,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:03:10,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:03:10,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:03:10,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:03:10,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:03:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:03:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:03:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:03:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:03:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:03:10,318 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:03:10,318 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 03:03:10,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:10 BoogieIcfgContainer [2019-10-15 03:03:10,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:03:10,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:03:10,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:03:10,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:03:10,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:03:09" (1/3) ... [2019-10-15 03:03:10,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e867b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:10, skipping insertion in model container [2019-10-15 03:03:10,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:03:09" (2/3) ... [2019-10-15 03:03:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e867b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:03:10, skipping insertion in model container [2019-10-15 03:03:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:03:10" (3/3) ... [2019-10-15 03:03:10,329 INFO L109 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+cfa-reducer.c [2019-10-15 03:03:10,340 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:03:10,350 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:03:10,367 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:03:10,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:03:10,397 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:03:10,397 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:03:10,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:03:10,398 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:03:10,398 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:03:10,398 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:03:10,398 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:03:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-15 03:03:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:03:10,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:10,428 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:10,430 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1330646415, now seen corresponding path program 1 times [2019-10-15 03:03:10,448 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:10,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203826192] [2019-10-15 03:03:10,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:10,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:10,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:10,565 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:03:10,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246031674] [2019-10-15 03:03:10,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:03:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:10,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:03:10,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:03:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:10,690 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:03:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:10,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203826192] [2019-10-15 03:03:10,727 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:03:10,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246031674] [2019-10-15 03:03:10,729 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:03:10,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2019-10-15 03:03:10,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495956647] [2019-10-15 03:03:10,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:03:10,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:03:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:03:10,749 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-10-15 03:03:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:10,821 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-15 03:03:10,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:03:10,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:03:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:10,831 INFO L225 Difference]: With dead ends: 25 [2019-10-15 03:03:10,831 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 03:03:10,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:03:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 03:03:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 03:03:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 03:03:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-15 03:03:10,873 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-15 03:03:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:10,873 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-15 03:03:10,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:03:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-15 03:03:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:03:10,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:10,875 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:11,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:03:11,088 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1699571622, now seen corresponding path program 1 times [2019-10-15 03:03:11,089 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:11,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642724180] [2019-10-15 03:03:11,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:11,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:11,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:11,103 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:03:11,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81022461] [2019-10-15 03:03:11,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 03:03:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:03:11,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:03:11,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:03:11,220 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:03:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:11,246 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:03:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:11,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642724180] [2019-10-15 03:03:11,472 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:03:11,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81022461] [2019-10-15 03:03:11,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [790379154] [2019-10-15 03:03:11,506 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-15 03:03:11,506 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:03:11,527 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:03:11,549 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:03:11,552 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:03:11,690 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-10-15 03:03:12,114 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-15 03:03:12,124 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:03:13,232 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2019-10-15 03:03:13,809 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2019-10-15 03:03:13,810 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:03:13,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 18 [2019-10-15 03:03:13,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760827586] [2019-10-15 03:03:13,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 03:03:13,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 03:03:13,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:03:13,815 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 18 states. [2019-10-15 03:03:15,078 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2019-10-15 03:03:16,193 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2019-10-15 03:03:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:16,200 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-10-15 03:03:16,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:03:16,201 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 11 [2019-10-15 03:03:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:16,202 INFO L225 Difference]: With dead ends: 16 [2019-10-15 03:03:16,202 INFO L226 Difference]: Without dead ends: 13 [2019-10-15 03:03:16,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2019-10-15 03:03:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-15 03:03:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-15 03:03:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-15 03:03:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-15 03:03:16,212 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-15 03:03:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:16,213 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-15 03:03:16,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 03:03:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-15 03:03:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 03:03:16,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:03:16,214 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:03:16,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:03:16,418 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:03:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:03:16,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1147050257, now seen corresponding path program 2 times [2019-10-15 03:03:16,419 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:03:16,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081958481] [2019-10-15 03:03:16,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:16,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:03:16,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:03:16,433 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:03:16,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617509297] [2019-10-15 03:03:16,434 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:03:16,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 03:03:16,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:03:16,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 03:03:16,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:03:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:03:16,582 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:03:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:03:18,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081958481] [2019-10-15 03:03:18,780 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:03:18,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617509297] [2019-10-15 03:03:18,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [490933060] [2019-10-15 03:03:18,781 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-15 03:03:18,782 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:03:18,782 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:03:18,782 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:03:18,783 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:03:18,805 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 12 for LOIs [2019-10-15 03:03:18,963 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-15 03:03:18,969 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:03:20,139 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2019-10-15 03:03:20,621 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2019-10-15 03:03:20,622 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:03:20,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 8] total 17 [2019-10-15 03:03:20,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646009554] [2019-10-15 03:03:20,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 03:03:20,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:03:20,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 03:03:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=215, Unknown=1, NotChecked=0, Total=272 [2019-10-15 03:03:20,625 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 17 states. [2019-10-15 03:03:21,062 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2019-10-15 03:03:21,252 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-10-15 03:03:21,636 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-10-15 03:03:25,808 WARN L191 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-10-15 03:03:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:03:25,810 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-10-15 03:03:25,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:03:25,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 12 [2019-10-15 03:03:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:03:25,811 INFO L225 Difference]: With dead ends: 15 [2019-10-15 03:03:25,811 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:03:25,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=172, Invalid=475, Unknown=3, NotChecked=0, Total=650 [2019-10-15 03:03:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:03:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:03:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:03:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:03:25,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-15 03:03:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:03:25,816 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:03:25,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 03:03:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:03:25,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:03:26,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:03:26,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:03:28,940 WARN L191 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2019-10-15 03:03:28,945 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_80~0)| ~__return_80~0)) [2019-10-15 03:03:28,946 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:03:28,946 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:03:28,946 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~__return_main~0 0) (= 0 ~__return_80~0)) [2019-10-15 03:03:28,946 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:03:28,946 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:03:28,947 INFO L439 ceAbstractionStarter]: At program point L33(lines 25 54) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (not (<= 0 |old(~__return_80~0)|)) (not (<= |old(~__return_80~0)| 0)) (and (<= 1 main_~main__i~0) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (* 2 main_~main__sum~0)) (<= main_~main__i~0 main_~main__n~0)) (<= 0 ~__return_80~0) (forall ((main_~main__n~0 Int)) (or (= (* main_~main__n~0 (+ main_~main__n~0 1)) (+ (* 2 main_~main__sum~0) (* 2 main_~main__i~0))) (< main_~main__i~0 main_~main__n~0) (< main_~main__n~0 main_~main__i~0))) (<= main_~main__n~0 1000) (<= ~__return_80~0 0) (<= 1 main_~main__n~0))) [2019-10-15 03:03:28,947 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (= |old(~__return_80~0)| ~__return_80~0) (not (<= 0 |old(~__return_80~0)|)) (not (<= |old(~__return_80~0)| 0))) [2019-10-15 03:03:28,947 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2019-10-15 03:03:28,947 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2019-10-15 03:03:28,947 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2019-10-15 03:03:28,947 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2019-10-15 03:03:28,948 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2019-10-15 03:03:28,948 INFO L443 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2019-10-15 03:03:28,948 INFO L443 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2019-10-15 03:03:28,954 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,956 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,964 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,965 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,965 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:03:28 BoogieIcfgContainer [2019-10-15 03:03:28,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:03:28,972 INFO L168 Benchmark]: Toolchain (without parser) took 19373.31 ms. Allocated memory was 142.1 MB in the beginning and 262.1 MB in the end (delta: 120.1 MB). Free memory was 105.7 MB in the beginning and 180.0 MB in the end (delta: -74.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,973 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.33 ms. Allocated memory is still 142.1 MB. Free memory was 105.5 MB in the beginning and 95.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,974 INFO L168 Benchmark]: Boogie Preprocessor took 105.88 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 95.7 MB in the beginning and 183.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,975 INFO L168 Benchmark]: RCFGBuilder took 296.34 ms. Allocated memory is still 203.4 MB. Free memory was 183.0 MB in the beginning and 170.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,976 INFO L168 Benchmark]: TraceAbstraction took 18648.12 ms. Allocated memory was 203.4 MB in the beginning and 262.1 MB in the end (delta: 58.7 MB). Free memory was 170.9 MB in the beginning and 180.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:03:28,981 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.33 ms. Allocated memory is still 142.1 MB. Free memory was 105.5 MB in the beginning and 95.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.88 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 95.7 MB in the beginning and 183.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.34 ms. Allocated memory is still 203.4 MB. Free memory was 183.0 MB in the beginning and 170.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18648.12 ms. Allocated memory was 203.4 MB in the beginning and 262.1 MB in the end (delta: 58.7 MB). Free memory was 170.9 MB in the beginning and 180.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 25]: Loop Invariant [2019-10-15 03:03:28,991 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,991 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,992 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,992 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,993 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,993 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,993 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2019-10-15 03:03:28,993 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: ((!(0 == __return_main) || !(0 <= \old(__return_80))) || !(\old(__return_80) <= 0)) || ((((((1 <= main__i && (main__n * (main__n + 1) == 2 * main__sum || main__i <= main__n)) && 0 <= __return_80) && (forall main_~main__n~0 : int :: (main_~main__n~0 * (main_~main__n~0 + 1) == 2 * main__sum + 2 * main__i || main__i < main_~main__n~0) || main_~main__n~0 < main__i)) && main__n <= 1000) && __return_80 <= 0) && 1 <= main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 18.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, HoareTripleCheckerStatistics: 26 SDtfs, 74 SDslu, 66 SDs, 0 SdLazy, 121 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 94 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 2 QuantifiedInterpolants, 2244 SizeOfPredicates, 14 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 806, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 40, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME[ms]: 25, TOOLS_POST_CALL_APPLICATIONS: 8, TOOLS_POST_CALL_TIME[ms]: 9, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 3, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 23, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 5, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 46, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME[ms]: 495, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 134, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 14, DOMAIN_ISBOTTOM_APPLICATIONS: 2, DOMAIN_ISBOTTOM_TIME[ms]: 2, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 339, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 332, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 28, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 28, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 22, DAG_COMPRESSION_PROCESSED_NODES: 124, DAG_COMPRESSION_RETAINED_NODES: 74, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...