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/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:44,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:44,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:44,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:44,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:44,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:44,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:44,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:44,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:44,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:44,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:44,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:44,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:44,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:44,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:44,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:44,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:44,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:44,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:44,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:44,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:44,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:44,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:44,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:44,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:44,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:44,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:44,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:44,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:44,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:44,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:44,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:44,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:44,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:44,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:44,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:44,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:06:44,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:44,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:44,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:44,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:44,667 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:44,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:44,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:44,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:44,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:44,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:44,669 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:44,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:44,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:44,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:44,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:44,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:44,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:44,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:44,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:44,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:44,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:44,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:44,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:44,671 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 [2019-10-15 01:06:44,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:44,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:44,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:44,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:44,986 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:44,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-15 01:06:45,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7339566b1/b24e73ab03c94411bd22e90b5f8e37ae/FLAG5ba4afda6 [2019-10-15 01:06:45,481 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:45,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-15 01:06:45,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7339566b1/b24e73ab03c94411bd22e90b5f8e37ae/FLAG5ba4afda6 [2019-10-15 01:06:45,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7339566b1/b24e73ab03c94411bd22e90b5f8e37ae [2019-10-15 01:06:45,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:45,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:45,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:45,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:45,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:45,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:45" (1/1) ... [2019-10-15 01:06:45,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:45, skipping insertion in model container [2019-10-15 01:06:45,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:45" (1/1) ... [2019-10-15 01:06:45,916 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:45,934 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:46,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:46,148 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:46,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:46,183 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:46,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46 WrapperNode [2019-10-15 01:06:46,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:46,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:46,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:46,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:46,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... [2019-10-15 01:06:46,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:46,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:46,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:46,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:46,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:06:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:06:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:46,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:46,528 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:46,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:46 BoogieIcfgContainer [2019-10-15 01:06:46,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:46,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:46,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:46,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:46,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:45" (1/3) ... [2019-10-15 01:06:46,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340138d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:46, skipping insertion in model container [2019-10-15 01:06:46,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:46" (2/3) ... [2019-10-15 01:06:46,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340138d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:46, skipping insertion in model container [2019-10-15 01:06:46,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:46" (3/3) ... [2019-10-15 01:06:46,537 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-10-15 01:06:46,546 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:46,554 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:46,566 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:46,615 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:46,615 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:46,615 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:46,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:46,615 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:46,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:46,616 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:46,616 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-15 01:06:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:46,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:46,655 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:46,657 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-10-15 01:06:46,676 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:46,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527938389] [2019-10-15 01:06:46,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:46,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:46,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:46,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527938389] [2019-10-15 01:06:46,783 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:46,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:46,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436658826] [2019-10-15 01:06:46,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:46,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:46,803 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-15 01:06:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:46,827 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2019-10-15 01:06:46,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:46,829 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:46,839 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:06:46,839 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 01:06:46,843 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 01:06:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 01:06:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 01:06:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-10-15 01:06:46,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-10-15 01:06:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:46,885 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-10-15 01:06:46,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-10-15 01:06:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:46,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:46,886 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:46,887 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:46,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-10-15 01:06:46,888 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:46,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572693616] [2019-10-15 01:06:46,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:46,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:46,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:47,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572693616] [2019-10-15 01:06:47,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:47,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:47,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881153704] [2019-10-15 01:06:47,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:47,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:47,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:47,129 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-10-15 01:06:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:47,210 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-15 01:06:47,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:06:47,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:06:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:47,212 INFO L225 Difference]: With dead ends: 25 [2019-10-15 01:06:47,213 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:06:47,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:06:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:06:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 01:06:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:06:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 01:06:47,227 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-10-15 01:06:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:47,227 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 01:06:47,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 01:06:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:06:47,229 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:47,229 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:47,230 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-10-15 01:06:47,232 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:47,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917669798] [2019-10-15 01:06:47,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:47,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:47,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:47,256 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:47,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795571609] [2019-10-15 01:06:47,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:47,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 01:06:47,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:47,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:47,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:47,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:47,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:47,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917669798] [2019-10-15 01:06:47,577 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:47,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795571609] [2019-10-15 01:06:47,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1135467345] [2019-10-15 01:06:47,584 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-15 01:06:47,625 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:47,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:47,737 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:47,738 INFO L272 AbstractInterpreter]: Visited 14 different actions 19 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 7. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 5 variables. [2019-10-15 01:06:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:47,743 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:47,743 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:06:47,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-10-15 01:06:47,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801667129] [2019-10-15 01:06:47,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:06:47,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:06:47,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:06:47,746 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 12 states. [2019-10-15 01:06:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:48,002 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-10-15 01:06:48,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:06:48,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-10-15 01:06:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:48,010 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:06:48,011 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 01:06:48,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:06:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 01:06:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-10-15 01:06:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 01:06:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-15 01:06:48,029 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-10-15 01:06:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:48,029 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-15 01:06:48,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:06:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-15 01:06:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-15 01:06:48,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:48,033 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:48,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:48,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2078000632, now seen corresponding path program 1 times [2019-10-15 01:06:48,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:48,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922917062] [2019-10-15 01:06:48,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:48,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:48,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:48,251 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:48,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279924645] [2019-10-15 01:06:48,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:48,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 01:06:48,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:06:48,398 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:48,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:48,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:06:48,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922917062] [2019-10-15 01:06:48,546 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:48,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279924645] [2019-10-15 01:06:48,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [827171581] [2019-10-15 01:06:48,547 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 38 [2019-10-15 01:06:48,556 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:48,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:48,961 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:48,964 INFO L272 AbstractInterpreter]: Visited 18 different actions 166 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 218 root evaluator evaluations with a maximum evaluation depth of 10. Performed 218 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-10-15 01:06:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:48,964 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:48,965 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:06:48,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-10-15 01:06:48,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107716477] [2019-10-15 01:06:48,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:06:48,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:48,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:06:48,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:06:48,970 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 13 states. [2019-10-15 01:06:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:49,232 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-10-15 01:06:49,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:06:49,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2019-10-15 01:06:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:49,243 INFO L225 Difference]: With dead ends: 48 [2019-10-15 01:06:49,243 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:49,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:06:49,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:49,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-15 01:06:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:49,245 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:49,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:06:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:49,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:49,446 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:49,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:49,825 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:49,826 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:49,826 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:49,826 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:49,826 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:49,826 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:49,827 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-10-15 01:06:49,827 INFO L443 ceAbstractionStarter]: For program point L26(lines 23 35) no Hoare annotation was computed. [2019-10-15 01:06:49,827 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))) [2019-10-15 01:06:49,827 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-10-15 01:06:49,827 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))) [2019-10-15 01:06:49,828 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))) [2019-10-15 01:06:49,828 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))) [2019-10-15 01:06:49,828 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))) [2019-10-15 01:06:49,828 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 15 42) no Hoare annotation was computed. [2019-10-15 01:06:49,829 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-15 01:06:49,829 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))) [2019-10-15 01:06:49,829 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))) [2019-10-15 01:06:49,830 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-15 01:06:49,831 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-15 01:06:49,831 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-15 01:06:49,831 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-15 01:06:49,831 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-15 01:06:49,832 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-15 01:06:49,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:49 BoogieIcfgContainer [2019-10-15 01:06:49,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:49,846 INFO L168 Benchmark]: Toolchain (without parser) took 3946.61 ms. Allocated memory was 144.7 MB in the beginning and 245.9 MB in the end (delta: 101.2 MB). Free memory was 102.3 MB in the beginning and 183.5 MB in the end (delta: -81.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,847 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.85 ms. Allocated memory is still 144.7 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,849 INFO L168 Benchmark]: Boogie Preprocessor took 117.45 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,850 INFO L168 Benchmark]: RCFGBuilder took 227.26 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 168.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,851 INFO L168 Benchmark]: TraceAbstraction took 3313.42 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 168.2 MB in the beginning and 183.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:49,856 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.85 ms. Allocated memory is still 144.7 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.45 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.26 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 168.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3313.42 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 168.2 MB in the beginning and 183.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 28.3 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: 3.2s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 79 SDtfs, 42 SDslu, 207 SDs, 0 SdLazy, 282 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 35 PreInvPairs, 56 NumberOfFragments, 173 HoareAnnotationTreeSize, 35 FomulaSimplifications, 100 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 519 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 12586 SizeOfPredicates, 8 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 80/112 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...