/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:26:44,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:26:44,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:26:44,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:26:44,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:26:44,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:26:44,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:26:44,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:26:44,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:26:44,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:26:44,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:26:44,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:26:44,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:26:44,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:26:44,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:26:44,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:26:44,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:26:44,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:26:44,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:26:44,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:26:44,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:26:44,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:26:44,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:26:44,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:26:44,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:26:44,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:26:44,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:26:44,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:26:44,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:26:44,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:26:44,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:26:44,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:26:44,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:26:44,343 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:26:44,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:26:44,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:26:44,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:26:44,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:26:44,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:26:44,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:26:44,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:26:44,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:26:44,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:26:44,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:26:44,347 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:26:44,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:26:44,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:26:44,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:26:44,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:26:44,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:26:44,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:26:44,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:26:44,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:26:44,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:26:44,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:26:44,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:26:44,623 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:26:44,623 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:26:44,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-06 21:26:44,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d0f1f4f/5ab8fbe6b502418a9a9892ad27d6c524/FLAG03f10112c [2019-11-06 21:26:45,153 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:26:45,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-06 21:26:45,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d0f1f4f/5ab8fbe6b502418a9a9892ad27d6c524/FLAG03f10112c [2019-11-06 21:26:45,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d0f1f4f/5ab8fbe6b502418a9a9892ad27d6c524 [2019-11-06 21:26:45,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:26:45,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:26:45,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:26:45,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:26:45,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:26:45,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e92733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45, skipping insertion in model container [2019-11-06 21:26:45,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:26:45,612 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:26:45,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:26:45,818 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:26:45,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:26:45,857 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:26:45,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45 WrapperNode [2019-11-06 21:26:45,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:26:45,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:26:45,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:26:45,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:26:45,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... [2019-11-06 21:26:45,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:26:45,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:26:45,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:26:45,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:26:45,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:26:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:26:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:26:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:26:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:26:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:26:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:26:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:26:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:26:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:26:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:26:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:26:46,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:26:46,197 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:26:46,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:26:46 BoogieIcfgContainer [2019-11-06 21:26:46,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:26:46,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:26:46,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:26:46,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:26:46,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:26:45" (1/3) ... [2019-11-06 21:26:46,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70051a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:26:46, skipping insertion in model container [2019-11-06 21:26:46,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:26:45" (2/3) ... [2019-11-06 21:26:46,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70051a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:26:46, skipping insertion in model container [2019-11-06 21:26:46,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:26:46" (3/3) ... [2019-11-06 21:26:46,206 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-11-06 21:26:46,216 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:26:46,223 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:26:46,234 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:26:46,277 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:26:46,277 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:26:46,277 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:26:46,278 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:26:46,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:26:46,278 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:26:46,278 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:26:46,278 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:26:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-06 21:26:46,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:26:46,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:46,334 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:46,335 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:46,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-11-06 21:26:46,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:46,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244891025] [2019-11-06 21:26:46,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:46,450 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244891025] [2019-11-06 21:26:46,451 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:26:46,451 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:26:46,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663004681] [2019-11-06 21:26:46,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:26:46,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:26:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:26:46,469 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-11-06 21:26:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:46,495 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2019-11-06 21:26:46,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:26:46,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 21:26:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:46,505 INFO L225 Difference]: With dead ends: 43 [2019-11-06 21:26:46,506 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:26:46,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:26:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:26:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 21:26:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 21:26:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-06 21:26:46,548 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-11-06 21:26:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:46,549 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-06 21:26:46,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:26:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-06 21:26:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:26:46,551 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:46,551 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:46,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-11-06 21:26:46,552 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:46,553 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40548469] [2019-11-06 21:26:46,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:46,684 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40548469] [2019-11-06 21:26:46,684 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:26:46,684 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:26:46,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158955850] [2019-11-06 21:26:46,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:26:46,687 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:26:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:26:46,688 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-11-06 21:26:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:46,786 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-06 21:26:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:26:46,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-06 21:26:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:46,788 INFO L225 Difference]: With dead ends: 25 [2019-11-06 21:26:46,788 INFO L226 Difference]: Without dead ends: 23 [2019-11-06 21:26:46,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:26:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-06 21:26:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-06 21:26:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 21:26:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-06 21:26:46,800 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-11-06 21:26:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:46,801 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-06 21:26:46,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:26:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-06 21:26:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:26:46,802 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:46,802 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:46,802 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:46,803 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-11-06 21:26:46,803 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:46,804 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498893618] [2019-11-06 21:26:46,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:46,813 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:46,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915247038] [2019-11-06 21:26:46,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:46,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-06 21:26:46,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:26:46,964 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498893618] [2019-11-06 21:26:46,964 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:46,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915247038] [2019-11-06 21:26:46,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:46,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-06 21:26:46,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329300325] [2019-11-06 21:26:46,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:26:46,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:46,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:26:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:26:46,967 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 8 states. [2019-11-06 21:26:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:47,186 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-06 21:26:47,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:26:47,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-06 21:26:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:47,188 INFO L225 Difference]: With dead ends: 41 [2019-11-06 21:26:47,188 INFO L226 Difference]: Without dead ends: 36 [2019-11-06 21:26:47,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:26:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-06 21:26:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-06 21:26:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-06 21:26:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-06 21:26:47,202 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-11-06 21:26:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:47,202 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-06 21:26:47,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:26:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-11-06 21:26:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-06 21:26:47,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:47,204 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:47,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:47,418 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash -751011113, now seen corresponding path program 1 times [2019-11-06 21:26:47,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:47,420 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893526471] [2019-11-06 21:26:47,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:47,431 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:47,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086170932] [2019-11-06 21:26:47,431 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 [2019-11-06 21:26:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:26:47,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-06 21:26:47,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:26:47,571 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893526471] [2019-11-06 21:26:47,571 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:47,571 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086170932] [2019-11-06 21:26:47,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:47,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-06 21:26:47,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652469182] [2019-11-06 21:26:47,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:26:47,573 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:26:47,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:26:47,574 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2019-11-06 21:26:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:47,779 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-06 21:26:47,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:26:47,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-11-06 21:26:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:47,781 INFO L225 Difference]: With dead ends: 50 [2019-11-06 21:26:47,781 INFO L226 Difference]: Without dead ends: 48 [2019-11-06 21:26:47,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:26:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-06 21:26:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-06 21:26:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-06 21:26:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2019-11-06 21:26:47,794 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2019-11-06 21:26:47,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:47,795 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2019-11-06 21:26:47,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:26:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2019-11-06 21:26:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:26:47,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:47,797 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:48,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:48,000 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2078000632, now seen corresponding path program 2 times [2019-11-06 21:26:48,001 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:48,001 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340260140] [2019-11-06 21:26:48,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:48,008 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:48,009 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583728986] [2019-11-06 21:26:48,009 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-06 21:26:48,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:26:48,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:26:48,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-06 21:26:48,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-06 21:26:48,119 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340260140] [2019-11-06 21:26:48,119 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:48,120 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583728986] [2019-11-06 21:26:48,120 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:48,120 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-06 21:26:48,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750172876] [2019-11-06 21:26:48,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:26:48,121 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:48,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:26:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:26:48,122 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 9 states. [2019-11-06 21:26:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:48,325 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2019-11-06 21:26:48,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:26:48,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-06 21:26:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:48,328 INFO L225 Difference]: With dead ends: 58 [2019-11-06 21:26:48,328 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 21:26:48,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:26:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 21:26:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-06 21:26:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-06 21:26:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2019-11-06 21:26:48,339 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 37 [2019-11-06 21:26:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:48,339 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2019-11-06 21:26:48,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:26:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2019-11-06 21:26:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 21:26:48,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:48,341 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:48,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:48,553 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash 541108426, now seen corresponding path program 3 times [2019-11-06 21:26:48,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:48,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953687462] [2019-11-06 21:26:48,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:48,569 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:48,570 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956398923] [2019-11-06 21:26:48,570 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:48,609 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-06 21:26:48,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:26:48,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-06 21:26:48,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-11-06 21:26:48,740 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953687462] [2019-11-06 21:26:48,741 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:48,741 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956398923] [2019-11-06 21:26:48,741 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:48,741 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-06 21:26:48,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113312915] [2019-11-06 21:26:48,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:26:48,742 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:48,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:26:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:26:48,743 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 10 states. [2019-11-06 21:26:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:48,975 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-11-06 21:26:48,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:26:48,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2019-11-06 21:26:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:48,977 INFO L225 Difference]: With dead ends: 71 [2019-11-06 21:26:48,977 INFO L226 Difference]: Without dead ends: 66 [2019-11-06 21:26:48,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:26:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-06 21:26:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-11-06 21:26:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-06 21:26:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2019-11-06 21:26:48,989 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 49 [2019-11-06 21:26:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:48,990 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2019-11-06 21:26:48,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:26:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2019-11-06 21:26:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 21:26:48,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:26:48,992 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:26:49,194 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:49,197 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:26:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:26:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 922074935, now seen corresponding path program 4 times [2019-11-06 21:26:49,198 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:26:49,199 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913071893] [2019-11-06 21:26:49,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:26:49,206 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 21:26:49,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582270601] [2019-11-06 21:26:49,207 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:49,267 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-06 21:26:49,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:26:49,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-06 21:26:49,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:26:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-06 21:26:49,384 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913071893] [2019-11-06 21:26:49,384 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 21:26:49,384 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582270601] [2019-11-06 21:26:49,385 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:26:49,385 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-06 21:26:49,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998482138] [2019-11-06 21:26:49,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:26:49,386 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:26:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:26:49,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:26:49,386 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 9 states. [2019-11-06 21:26:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:26:49,452 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2019-11-06 21:26:49,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:26:49,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2019-11-06 21:26:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:26:49,453 INFO L225 Difference]: With dead ends: 66 [2019-11-06 21:26:49,453 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:26:49,454 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:26:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:26:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:26:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:26:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:26:49,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2019-11-06 21:26:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:26:49,455 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:26:49,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:26:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:26:49,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:26:49,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:26:49,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:26:49,889 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:26:49,889 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:26:49,889 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:26:49,889 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:26:49,890 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:26:49,890 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:26:49,890 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-11-06 21:26:49,890 INFO L443 ceAbstractionStarter]: For program point L26(lines 23 35) no Hoare annotation was computed. [2019-11-06 21:26:49,890 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,890 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-11-06 21:26:49,890 INFO L439 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,890 INFO L439 ceAbstractionStarter]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,891 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,891 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,891 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 15 42) no Hoare annotation was computed. [2019-11-06 21:26:49,891 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-06 21:26:49,891 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,892 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-11-06 21:26:49,892 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-11-06 21:26:49,892 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-06 21:26:49,892 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-11-06 21:26:49,892 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-06 21:26:49,892 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-06 21:26:49,892 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-11-06 21:26:49,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:26:49 BoogieIcfgContainer [2019-11-06 21:26:49,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:26:49,907 INFO L168 Benchmark]: Toolchain (without parser) took 4328.51 ms. Allocated memory was 139.5 MB in the beginning and 243.3 MB in the end (delta: 103.8 MB). Free memory was 103.2 MB in the beginning and 135.8 MB in the end (delta: -32.6 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,907 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.55 ms. Allocated memory is still 139.5 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,909 INFO L168 Benchmark]: Boogie Preprocessor took 123.96 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,910 INFO L168 Benchmark]: RCFGBuilder took 216.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 169.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,911 INFO L168 Benchmark]: TraceAbstraction took 3704.71 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 168.8 MB in the beginning and 135.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:26:49,915 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.55 ms. Allocated memory is still 139.5 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.96 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 216.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 169.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3704.71 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 168.8 MB in the beginning and 135.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * 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: 23]: Loop Invariant Derived loop invariant: ((a + 1) * (a + 1) == s && 2 * a + 1 <= t) && t <= 2 * a + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 11, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 133 SDtfs, 71 SDslu, 435 SDs, 0 SdLazy, 650 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=6, 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, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 41 PreInvPairs, 69 NumberOfFragments, 173 HoareAnnotationTreeSize, 41 FomulaSimplifications, 598 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 286 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 219 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 38960 SizeOfPredicates, 22 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 332/424 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...