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/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:25,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:25,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:25,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:25,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:25,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:25,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:25,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:25,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:25,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:25,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:25,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:25,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:25,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:25,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:25,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:25,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:25,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:25,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:25,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:25,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:25,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:25,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:25,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:25,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:05:25,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:05:25,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:05:25,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:05:25,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:05:25,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:05:25,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:05:25,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:05:25,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:05:25,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:25,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:25,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:25,330 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 01:05:25,344 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:25,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:25,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:25,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:25,346 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:25,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:25,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:25,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:25,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:25,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:25,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:25,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:25,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:25,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:25,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:25,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:25,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:25,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:25,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:25,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:25,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:25,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:25,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:25,351 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 01:05:25,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:25,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:25,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:25,679 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:25,679 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:25,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-10-15 01:05:25,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7238b9c58/21f611360829474ba719ea00e1622dd2/FLAG8605342a9 [2019-10-15 01:05:26,191 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:26,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-10-15 01:05:26,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7238b9c58/21f611360829474ba719ea00e1622dd2/FLAG8605342a9 [2019-10-15 01:05:26,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7238b9c58/21f611360829474ba719ea00e1622dd2 [2019-10-15 01:05:26,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:26,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:26,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:26,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:26,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:26,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3044d039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26, skipping insertion in model container [2019-10-15 01:05:26,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,625 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:26,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:26,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:26,806 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:26,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:26,833 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:26,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26 WrapperNode [2019-10-15 01:05:26,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:26,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:26,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:26,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:26,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (1/1) ... [2019-10-15 01:05:26,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:26,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:26,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:26,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:26,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (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 01:05:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:05:27,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:05:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:05:27,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:27,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:27,183 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:27,183 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:05:27,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:27 BoogieIcfgContainer [2019-10-15 01:05:27,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:27,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:27,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:27,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:27,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:26" (1/3) ... [2019-10-15 01:05:27,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9138ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:27, skipping insertion in model container [2019-10-15 01:05:27,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:26" (2/3) ... [2019-10-15 01:05:27,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9138ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:27, skipping insertion in model container [2019-10-15 01:05:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:27" (3/3) ... [2019-10-15 01:05:27,192 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-10-15 01:05:27,202 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:27,210 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:27,222 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:27,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:27,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:27,250 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:27,250 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:27,250 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:27,251 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:27,251 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:27,251 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 01:05:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:05:27,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:27,279 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:27,281 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2019-10-15 01:05:27,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:27,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197723177] [2019-10-15 01:05:27,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:27,410 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 01:05:27,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197723177] [2019-10-15 01:05:27,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:27,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:05:27,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632635925] [2019-10-15 01:05:27,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:05:27,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:27,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:05:27,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:05:27,432 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 01:05:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:27,455 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-15 01:05:27,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:05:27,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-15 01:05:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:27,466 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:05:27,466 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 01:05:27,469 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 01:05:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 01:05:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 01:05:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 01:05:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-15 01:05:27,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2019-10-15 01:05:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:27,512 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-15 01:05:27,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:05:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-15 01:05:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:05:27,513 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:27,513 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:27,513 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2019-10-15 01:05:27,514 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:27,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979174165] [2019-10-15 01:05:27,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:27,570 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 01:05:27,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979174165] [2019-10-15 01:05:27,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:27,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:05:27,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945354792] [2019-10-15 01:05:27,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:05:27,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:27,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:05:27,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:05:27,575 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-10-15 01:05:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:27,594 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-15 01:05:27,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:05:27,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:05:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:27,596 INFO L225 Difference]: With dead ends: 18 [2019-10-15 01:05:27,596 INFO L226 Difference]: Without dead ends: 13 [2019-10-15 01:05:27,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:05:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-15 01:05:27,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-15 01:05:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-15 01:05:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-15 01:05:27,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-15 01:05:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:27,604 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-15 01:05:27,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:05:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-15 01:05:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 01:05:27,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:27,606 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:27,606 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2019-10-15 01:05:27,607 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:27,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964737848] [2019-10-15 01:05:27,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:27,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:27,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964737848] [2019-10-15 01:05:27,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782636751] [2019-10-15 01:05:27,940 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 01:05:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:27,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 01:05:27,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:28,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:28,209 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:28,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1270007750] [2019-10-15 01:05:28,295 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 13 [2019-10-15 01:05:28,333 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:05:28,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:05:28,523 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:05:28,526 INFO L272 AbstractInterpreter]: Visited 12 different actions 44 times. Merged at 2 different actions 11 times. Widened at 1 different actions 3 times. Performed 87 root evaluator evaluations with a maximum evaluation depth of 5. Performed 87 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2019-10-15 01:05:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:28,532 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:28,533 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:28,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2019-10-15 01:05:28,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575498036] [2019-10-15 01:05:28,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:05:28,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:05:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:05:28,536 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 15 states. [2019-10-15 01:05:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:28,665 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-15 01:05:28,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:05:28,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2019-10-15 01:05:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:28,669 INFO L225 Difference]: With dead ends: 19 [2019-10-15 01:05:28,670 INFO L226 Difference]: Without dead ends: 14 [2019-10-15 01:05:28,671 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:05:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-15 01:05:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-15 01:05:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-15 01:05:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-15 01:05:28,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-15 01:05:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:28,680 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-15 01:05:28,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:05:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-15 01:05:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:05:28,681 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:28,682 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:28,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:28,883 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:28,884 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2019-10-15 01:05:28,885 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:28,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219297784] [2019-10-15 01:05:28,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:28,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:28,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:05:29,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219297784] [2019-10-15 01:05:29,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212457338] [2019-10-15 01:05:29,052 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 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 01:05:29,087 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:05:29,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:05:29,089 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:05:29,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:29,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:29,265 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:29,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:29,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [328207615] [2019-10-15 01:05:29,500 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:05:29,500 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:05:29,500 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:29,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2019-10-15 01:05:29,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954748523] [2019-10-15 01:05:29,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:05:29,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:29,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:05:29,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:05:29,503 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 17 states. [2019-10-15 01:05:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:29,762 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-15 01:05:29,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:05:29,762 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2019-10-15 01:05:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:29,763 INFO L225 Difference]: With dead ends: 16 [2019-10-15 01:05:29,764 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:05:29,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:05:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:05:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:05:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:05:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:05:29,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-15 01:05:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:29,767 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:05:29,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:05:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:05:29,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:05:29,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:29,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:05:30,149 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:05:30,150 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:30,150 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:30,150 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:05:30,150 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:30,150 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:30,150 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-10-15 01:05:30,151 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:05:30,151 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 01:05:30,151 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-15 01:05:30,151 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2019-10-15 01:05:30,152 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (let ((.cse1 (+ main_~hi~0 1))) (let ((.cse0 (div .cse1 2))) (and (<= main_~lo~0 1) (<= .cse0 (+ main_~mid~0 1)) (<= .cse0 1) (<= 1 main_~lo~0) (= 0 (mod .cse1 2)) (< 0 .cse0)))) (let ((.cse2 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse2 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse2) (<= main_~lo~0 main_~hi~0)))) [2019-10-15 01:05:30,152 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:05:30,152 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:05:30,152 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:30,152 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:05:30,153 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:05:30,153 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:05:30,153 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:30,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:05:30 BoogieIcfgContainer [2019-10-15 01:05:30,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:05:30,171 INFO L168 Benchmark]: Toolchain (without parser) took 3563.78 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.1 MB in the beginning and 106.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,172 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.69 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 93.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,175 INFO L168 Benchmark]: Boogie Preprocessor took 116.74 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 181.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,176 INFO L168 Benchmark]: RCFGBuilder took 233.88 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 170.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,177 INFO L168 Benchmark]: TraceAbstraction took 2982.96 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.6 MB in the beginning and 106.5 MB in the end (delta: 63.0 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:30,182 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.69 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 93.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.74 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 181.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.88 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 170.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2982.96 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.6 MB in the beginning and 106.5 MB in the end (delta: 63.0 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 47 SDtfs, 14 SDslu, 107 SDs, 0 SdLazy, 92 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 82 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 5289 SizeOfPredicates, 8 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 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...