/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/bresenham.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:04:13,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:04:13,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:04:13,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:04:13,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:04:13,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:04:13,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:04:13,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:04:13,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:04:13,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:04:13,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:04:13,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:04:13,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:04:13,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:04:13,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:04:13,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:04:13,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:04:13,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:04:13,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:04:13,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:04:13,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:04:13,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:04:13,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:04:13,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:04:13,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:04:14,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:04:14,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:04:14,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:04:14,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:04:14,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:04:14,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:04:14,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:04:14,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:04:14,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:04:14,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:04:14,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:04:14,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:04:14,040 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:04:14,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:04:14,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:04:14,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:04:14,042 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:04:14,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:04:14,046 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:04:14,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:04:14,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:04:14,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:04:14,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:04:14,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:04:14,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:04:14,047 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:04:14,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:04:14,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:04:14,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:04:14,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:04:14,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:04:14,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:04:14,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:04:14,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:04:14,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:04:14,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:04:14,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:04:14,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:04:14,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:04:14,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:04:14,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:04:14,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:04:14,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:04:14,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:04:14,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:04:14,368 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:04:14,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/bresenham.c [2019-11-07 04:04:14,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d786e24/90e0fa5b3a2f4bc1944368580c5eae48/FLAG3fc971b52 [2019-11-07 04:04:14,900 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:04:14,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham.c [2019-11-07 04:04:14,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d786e24/90e0fa5b3a2f4bc1944368580c5eae48/FLAG3fc971b52 [2019-11-07 04:04:15,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d786e24/90e0fa5b3a2f4bc1944368580c5eae48 [2019-11-07 04:04:15,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:04:15,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:04:15,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:04:15,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:04:15,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:04:15,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19891321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15, skipping insertion in model container [2019-11-07 04:04:15,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,348 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:04:15,373 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:04:15,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:04:15,571 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:04:15,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:04:15,601 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:04:15,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15 WrapperNode [2019-11-07 04:04:15,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:04:15,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:04:15,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:04:15,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:04:15,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... [2019-11-07 04:04:15,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:04:15,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:04:15,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:04:15,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:04:15,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:04:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:04:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:04:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:04:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:04:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:04:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:04:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:04:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:04:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:04:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:04:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:04:16,030 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:04:16,031 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:04:16,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:16 BoogieIcfgContainer [2019-11-07 04:04:16,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:04:16,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:04:16,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:04:16,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:04:16,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:04:15" (1/3) ... [2019-11-07 04:04:16,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a2ada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:16, skipping insertion in model container [2019-11-07 04:04:16,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:15" (2/3) ... [2019-11-07 04:04:16,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a2ada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:16, skipping insertion in model container [2019-11-07 04:04:16,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:16" (3/3) ... [2019-11-07 04:04:16,041 INFO L109 eAbstractionObserver]: Analyzing ICFG bresenham.c [2019-11-07 04:04:16,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:04:16,060 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:04:16,072 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:04:16,136 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:04:16,136 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:04:16,136 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:04:16,137 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:04:16,137 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:04:16,137 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:04:16,137 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:04:16,137 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:04:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-07 04:04:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:04:16,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:16,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:16,194 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1598892056, now seen corresponding path program 1 times [2019-11-07 04:04:16,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:16,209 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503830331] [2019-11-07 04:04:16,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:16,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503830331] [2019-11-07 04:04:16,317 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:16,318 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:04:16,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599155187] [2019-11-07 04:04:16,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:04:16,324 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:04:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:04:16,343 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-07 04:04:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:16,370 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-11-07 04:04:16,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:04:16,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 04:04:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:16,384 INFO L225 Difference]: With dead ends: 33 [2019-11-07 04:04:16,384 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 04:04:16,390 INFO L630 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 [2019-11-07 04:04:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 04:04:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 04:04:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 04:04:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-07 04:04:16,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-07 04:04:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:16,456 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-07 04:04:16,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:04:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-07 04:04:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:04:16,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:16,457 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:16,457 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1561891634, now seen corresponding path program 1 times [2019-11-07 04:04:16,459 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:16,459 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401814769] [2019-11-07 04:04:16,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:16,472 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:16,472 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315653923] [2019-11-07 04:04:16,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:16,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-07 04:04:16,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:16,617 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:16,685 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401814769] [2019-11-07 04:04:16,685 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:16,686 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315653923] [2019-11-07 04:04:16,686 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:16,686 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 04:04:16,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466078632] [2019-11-07 04:04:16,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:04:16,689 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:04:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:04:16,691 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-11-07 04:04:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:16,872 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-07 04:04:16,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:04:16,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 04:04:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:16,874 INFO L225 Difference]: With dead ends: 25 [2019-11-07 04:04:16,874 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 04:04:16,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:04:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 04:04:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 04:04:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 04:04:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-07 04:04:16,883 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2019-11-07 04:04:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:16,883 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-07 04:04:16,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:04:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-07 04:04:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-07 04:04:16,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:16,886 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:17,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:17,098 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:17,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:17,099 INFO L82 PathProgramCache]: Analyzing trace with hash -148694472, now seen corresponding path program 1 times [2019-11-07 04:04:17,100 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:17,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257768844] [2019-11-07 04:04:17,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:17,109 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:17,109 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922751294] [2019-11-07 04:04:17,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:17,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-07 04:04:17,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:17,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 04:04:17,412 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:17,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:19,557 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 2 c_main_~Y~0)) (.cse1 (* (* c_main_~Y~0 2) c_main_~x~0))) (or (<= c_main_~x~0 c_main_~X~0) (= (+ .cse0 (* 2 c_main_~y~0) .cse1) (+ c_main_~v~0 c_main_~X~0 (* (* c_main_~x~0 2) c_main_~y~0))) (not (= (+ .cse0 .cse1) (+ c_main_~v~0 c_main_~X~0 (* (* c_main_~X~0 2) c_main_~y~0)))))) is different from true [2019-11-07 04:04:19,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 04:04:19,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:19,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:04:19,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257768844] [2019-11-07 04:04:19,661 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:19,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922751294] [2019-11-07 04:04:19,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897109140] [2019-11-07 04:04:19,697 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-07 04:04:19,697 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:04:19,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:04:19,716 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:04:19,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:04:19,774 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:04:24,169 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:04:24,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:04:24,182 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:04:24,836 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 04:04:24,836 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2019-11-07 04:04:24,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558986929] [2019-11-07 04:04:24,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:04:24,838 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:24,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:04:24,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2019-11-07 04:04:24,840 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 21 states. [2019-11-07 04:04:29,665 WARN L191 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2019-11-07 04:04:33,813 WARN L191 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-07 04:04:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:36,025 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-11-07 04:04:36,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:04:36,025 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 23 [2019-11-07 04:04:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:36,026 INFO L225 Difference]: With dead ends: 24 [2019-11-07 04:04:36,026 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:04:36,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=88, Invalid=377, Unknown=1, NotChecked=40, Total=506 [2019-11-07 04:04:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:04:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:04:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:04:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:04:36,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-07 04:04:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:36,029 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:04:36,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:04:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:04:36,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:04:36,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:36,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:04:39,267 WARN L191 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2019-11-07 04:04:45,352 WARN L191 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2019-11-07 04:04:45,363 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:04:45,364 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:04:45,364 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:04:45,364 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:04:45,364 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:04:45,365 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:04:45,368 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 42) no Hoare annotation was computed. [2019-11-07 04:04:45,368 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~Y~0)) (.cse1 (* (* main_~Y~0 2) main_~x~0))) (and (or (<= main_~x~0 main_~X~0) (= (+ .cse0 (* 2 main_~y~0) .cse1) (+ main_~v~0 main_~X~0 (* (* main_~x~0 2) main_~y~0)))) (= (+ .cse0 .cse1) (+ main_~v~0 main_~X~0 (* (* main_~X~0 2) main_~y~0))))) [2019-11-07 04:04:45,369 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~Y~0))) (or (and (= main_~y~0 0) (= main_~x~0 0) (= .cse0 (+ main_~v~0 main_~X~0))) (let ((.cse1 (* (* main_~Y~0 2) main_~x~0))) (and (< main_~X~0 main_~x~0) (= (+ .cse0 .cse1) (+ main_~v~0 main_~X~0 (* (* main_~X~0 2) main_~y~0))) (= (+ .cse0 (* 2 main_~y~0) .cse1) (+ main_~v~0 main_~X~0 (* (* main_~x~0 2) main_~y~0))))))) [2019-11-07 04:04:45,369 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 42) the Hoare annotation is: true [2019-11-07 04:04:45,369 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~Y~0)) (.cse1 (* (* main_~Y~0 2) main_~x~0))) (and (or (<= main_~x~0 main_~X~0) (= (+ .cse0 (* 2 main_~y~0) .cse1) (+ main_~v~0 main_~X~0 (* (* main_~x~0 2) main_~y~0)))) (= (+ .cse0 .cse1) (+ main_~v~0 main_~X~0 (* (* main_~X~0 2) main_~y~0))))) [2019-11-07 04:04:45,370 INFO L443 ceAbstractionStarter]: For program point L26-1(lines 25 38) no Hoare annotation was computed. [2019-11-07 04:04:45,370 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-07 04:04:45,370 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 8 14) the Hoare annotation is: true [2019-11-07 04:04:45,370 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2019-11-07 04:04:45,370 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 11) no Hoare annotation was computed. [2019-11-07 04:04:45,373 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 8 14) no Hoare annotation was computed. [2019-11-07 04:04:45,373 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 12) no Hoare annotation was computed. [2019-11-07 04:04:45,376 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 8 14) no Hoare annotation was computed. [2019-11-07 04:04:45,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:04:45 BoogieIcfgContainer [2019-11-07 04:04:45,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:04:45,413 INFO L168 Benchmark]: Toolchain (without parser) took 30102.42 ms. Allocated memory was 145.8 MB in the beginning and 234.9 MB in the end (delta: 89.1 MB). Free memory was 103.4 MB in the beginning and 94.8 MB in the end (delta: 8.5 MB). Peak memory consumption was 97.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,414 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.00 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,416 INFO L168 Benchmark]: Boogie Preprocessor took 125.53 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.6 MB in the beginning and 181.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,417 INFO L168 Benchmark]: RCFGBuilder took 304.17 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,418 INFO L168 Benchmark]: TraceAbstraction took 29378.10 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.1 MB in the beginning and 94.8 MB in the end (delta: 71.2 MB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:45,423 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.00 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.53 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.6 MB in the beginning and 181.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.17 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29378.10 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.1 MB in the beginning and 94.8 MB in the end (delta: 71.2 MB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (x <= X || 2 * Y + 2 * y + Y * 2 * x == v + X + x * 2 * y) && 2 * Y + Y * 2 * x == v + X + X * 2 * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 29.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.1s, HoareTripleCheckerStatistics: 42 SDtfs, 29 SDslu, 114 SDs, 0 SdLazy, 117 SolverSat, 25 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 151 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 249 FormulaSimplificationTreeSizeReductionInter, 9.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 10025 SizeOfPredicates, 7 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 16/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 4485, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME[ms]: 24, TOOLS_POST_CALL_APPLICATIONS: 12, TOOLS_POST_CALL_TIME[ms]: 40, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME[ms]: 10, TOOLS_QUANTIFIERELIM_APPLICATIONS: 38, TOOLS_QUANTIFIERELIM_TIME[ms]: 57, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 11, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 60, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 9, DOMAIN_JOIN_TIME[ms]: 157, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 60, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 4081, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 31, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 4306, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 4305, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 7, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 7, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 19, DAG_COMPRESSION_PROCESSED_NODES: 102, DAG_COMPRESSION_RETAINED_NODES: 57, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...