/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/nla-digbench/fermat1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:23,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:23,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:23,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 00:36:23,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:23,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:23,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:23,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:23,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:23,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:23,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:23,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:23,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:23,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:23,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:23,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:23,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:36:23,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:23,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:23,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:23,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:36:23,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:23,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:23,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:23,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:23,327 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:23,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:23,328 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:23,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:23,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:23,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:23,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:23,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:23,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:23,330 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:23,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:23,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:23,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:23,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:23,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:23,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:23,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:23,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:23,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:23,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:23,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:23,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:23,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:23,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:23,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:36:23,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:23,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:23,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:23,631 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:23,631 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:23,632 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat1.c [2019-11-07 00:36:23,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfc67003/1771a912463a46038255d4e1ea2717ff/FLAGbbecc6ebc [2019-11-07 00:36:24,164 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:24,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1.c [2019-11-07 00:36:24,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfc67003/1771a912463a46038255d4e1ea2717ff/FLAGbbecc6ebc [2019-11-07 00:36:24,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfc67003/1771a912463a46038255d4e1ea2717ff [2019-11-07 00:36:24,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:24,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:24,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:24,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:24,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:24,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ccd342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24, skipping insertion in model container [2019-11-07 00:36:24,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:24,621 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:24,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:24,823 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:24,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:24,854 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:24,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24 WrapperNode [2019-11-07 00:36:24,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:24,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:24,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:24,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:24,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... [2019-11-07 00:36:24,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:24,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:24,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:24,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:24,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:25,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-11-07 00:36:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:25,211 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:25,212 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 00:36:25,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:25 BoogieIcfgContainer [2019-11-07 00:36:25,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:25,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:25,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:25,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:25,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:24" (1/3) ... [2019-11-07 00:36:25,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efb6ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:25, skipping insertion in model container [2019-11-07 00:36:25,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:24" (2/3) ... [2019-11-07 00:36:25,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efb6ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:25, skipping insertion in model container [2019-11-07 00:36:25,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:25" (3/3) ... [2019-11-07 00:36:25,221 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat1.c [2019-11-07 00:36:25,231 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:25,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:25,250 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:25,285 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:25,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:25,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:25,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:25,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:25,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:25,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:25,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-07 00:36:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:25,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:25,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:25,326 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1029581307, now seen corresponding path program 1 times [2019-11-07 00:36:25,346 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:25,347 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488133453] [2019-11-07 00:36:25,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:25,425 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:25,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260874364] [2019-11-07 00:36:25,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:25,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 00:36:25,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:25,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:25,502 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488133453] [2019-11-07 00:36:25,503 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:25,503 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260874364] [2019-11-07 00:36:25,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:25,504 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-07 00:36:25,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843524191] [2019-11-07 00:36:25,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:25,511 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:25,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:25,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:25,529 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-07 00:36:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:25,554 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2019-11-07 00:36:25,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:25,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:25,565 INFO L225 Difference]: With dead ends: 47 [2019-11-07 00:36:25,566 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 00:36:25,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 00:36:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 00:36:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 00:36:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-11-07 00:36:25,609 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2019-11-07 00:36:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:25,609 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-11-07 00:36:25,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-11-07 00:36:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:25,610 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:25,610 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:25,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:25,812 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash 989691158, now seen corresponding path program 1 times [2019-11-07 00:36:25,814 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:25,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846133660] [2019-11-07 00:36:25,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:25,819 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:25,819 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977857568] [2019-11-07 00:36:25,820 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 [2019-11-07 00:36:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:25,850 WARN L254 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:25,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:26,015 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-11-07 00:36:26,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:28,648 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:28,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846133660] [2019-11-07 00:36:28,800 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:28,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977857568] [2019-11-07 00:36:28,801 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:28,801 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 00:36:28,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138197298] [2019-11-07 00:36:28,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:28,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:28,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:28,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:28,807 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 8 states. [2019-11-07 00:36:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:32,624 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2019-11-07 00:36:32,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:36:32,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 00:36:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:32,630 INFO L225 Difference]: With dead ends: 47 [2019-11-07 00:36:32,631 INFO L226 Difference]: Without dead ends: 45 [2019-11-07 00:36:32,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:32,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-07 00:36:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2019-11-07 00:36:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 00:36:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-11-07 00:36:32,665 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 10 [2019-11-07 00:36:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:32,665 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-11-07 00:36:32,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-11-07 00:36:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 00:36:32,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:32,667 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:32,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:32,870 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash -732641273, now seen corresponding path program 1 times [2019-11-07 00:36:32,871 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:32,871 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099022320] [2019-11-07 00:36:32,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:32,883 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:32,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345533915] [2019-11-07 00:36:32,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2019-11-07 00:36:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:32,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:32,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:33,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:33,110 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:33,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:33,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:33,295 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099022320] [2019-11-07 00:36:33,295 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:33,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345533915] [2019-11-07 00:36:33,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [781579855] [2019-11-07 00:36:33,303 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 17 [2019-11-07 00:36:33,340 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:36:33,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:36:33,429 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-11-07 00:36:34,555 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:36:34,556 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 14. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 7 variables. [2019-11-07 00:36:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:34,563 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:34,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:36:34,564 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-11-07 00:36:34,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943927184] [2019-11-07 00:36:34,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-07 00:36:34,568 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:34,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-07 00:36:34,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2019-11-07 00:36:34,570 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 13 states. [2019-11-07 00:36:34,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:34,959 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2019-11-07 00:36:34,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:34,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-11-07 00:36:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:34,963 INFO L225 Difference]: With dead ends: 34 [2019-11-07 00:36:34,963 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:34,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=160, Unknown=1, NotChecked=0, Total=210 [2019-11-07 00:36:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:34,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-07 00:36:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:34,966 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:34,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-07 00:36:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:34,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:35,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:35,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:35,345 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:35,346 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:35,346 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:35,346 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:35,346 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:35,346 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:35,346 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 52) no Hoare annotation was computed. [2019-11-07 00:36:35,347 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 48) the Hoare annotation is: (let ((.cse4 (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* 4 main_~A~0)) (.cse3 (* 2 main_~u~0))) (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ .cse1 .cse2 .cse3) .cse4) (= .cse4 (+ .cse1 .cse2 (* 4 main_~r~0) .cse3)))) [2019-11-07 00:36:35,347 INFO L443 ceAbstractionStarter]: For program point L41-1(lines 28 48) no Hoare annotation was computed. [2019-11-07 00:36:35,347 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 28 48) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)))) [2019-11-07 00:36:35,348 INFO L439 ceAbstractionStarter]: At program point L33-2(lines 33 39) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)))) [2019-11-07 00:36:35,348 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)))) [2019-11-07 00:36:35,348 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 48) no Hoare annotation was computed. [2019-11-07 00:36:35,348 INFO L443 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-07 00:36:35,349 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 52) no Hoare annotation was computed. [2019-11-07 00:36:35,349 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)))) [2019-11-07 00:36:35,350 INFO L443 ceAbstractionStarter]: For program point L42-1(lines 41 47) no Hoare annotation was computed. [2019-11-07 00:36:35,351 INFO L439 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)))) [2019-11-07 00:36:35,351 INFO L443 ceAbstractionStarter]: For program point L34-1(lines 33 39) no Hoare annotation was computed. [2019-11-07 00:36:35,351 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 52) the Hoare annotation is: true [2019-11-07 00:36:35,351 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-11-07 00:36:35,351 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-11-07 00:36:35,351 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-07 00:36:35,351 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-07 00:36:35,352 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-07 00:36:35,352 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-11-07 00:36:35,358 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,359 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,366 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,366 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,367 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,367 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,369 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:35 BoogieIcfgContainer [2019-11-07 00:36:35,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:35,378 INFO L168 Benchmark]: Toolchain (without parser) took 10791.38 ms. Allocated memory was 145.8 MB in the beginning and 282.1 MB in the end (delta: 136.3 MB). Free memory was 102.6 MB in the beginning and 188.1 MB in the end (delta: -85.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,382 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.75 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,387 INFO L168 Benchmark]: Boogie Preprocessor took 112.34 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.4 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,392 INFO L168 Benchmark]: RCFGBuilder took 245.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 166.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,393 INFO L168 Benchmark]: TraceAbstraction took 10159.10 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 166.4 MB in the beginning and 188.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:35,404 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.75 ms. Allocated memory is still 145.8 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.34 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.4 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 166.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10159.10 ms. Allocated memory was 201.9 MB in the beginning and 282.1 MB in the end (delta: 80.2 MB). Free memory was 166.4 MB in the beginning and 188.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 58.5 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_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 28]: Loop Invariant [2019-11-07 00:36:35,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: (\exists main_~R~0 : int :: (main_~R~0 + -1) * (main_~R~0 + -1) < A) && 2 * v + u * u == v * v + 4 * A + 4 * r + 2 * u - InvariantResult [Line: 33]: Loop Invariant [2019-11-07 00:36:35,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,418 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:35,419 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: (\exists main_~R~0 : int :: (main_~R~0 + -1) * (main_~R~0 + -1) < A) && 2 * v + u * u == v * v + 4 * A + 4 * r + 2 * u - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 10.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 62 SDtfs, 46 SDslu, 166 SDs, 0 SdLazy, 178 SolverSat, 23 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, 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, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 21 PreInvPairs, 32 NumberOfFragments, 215 HoareAnnotationTreeSize, 21 FomulaSimplifications, 535 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 4 QuantifiedInterpolants, 4347 SizeOfPredicates, 11 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...