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/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:05:00,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:05:00,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:05:00,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:05:00,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:05:00,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:05:00,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:05:00,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:05:00,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:05:00,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:05:00,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:05:00,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:05:00,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:05:00,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:05:00,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:05:00,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:05:00,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:05:00,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:05:00,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:05:00,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:05:00,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:05:00,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:05:00,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:05:00,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:05:00,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:05:00,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:05:00,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:05:00,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:05:00,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:05:00,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:05:00,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:05:00,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:05:00,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:05:00,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:05:00,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:05:00,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:05:00,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:05:00,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:05:00,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:05:00,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:05:00,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:05:00,813 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 03:05:00,828 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:05:00,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:05:00,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:05:00,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:05:00,830 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:05:00,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:05:00,831 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:05:00,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:05:00,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:05:00,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:05:00,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:05:00,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:05:00,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:05:00,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:05:00,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:05:00,833 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:05:00,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:05:00,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:05:00,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:05:00,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:05:00,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:05:00,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:00,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:05:00,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:05:00,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:05:00,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:05:00,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:05:00,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:05:00,836 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 [2019-10-15 03:05:01,165 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:05:01,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:05:01,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:05:01,185 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:05:01,185 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:05:01,186 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-15 03:05:01,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b26a46a/58b8f40c823f471387fe848749a461f2/FLAG9846b25ce [2019-10-15 03:05:01,773 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:05:01,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-10-15 03:05:01,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b26a46a/58b8f40c823f471387fe848749a461f2/FLAG9846b25ce [2019-10-15 03:05:02,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b26a46a/58b8f40c823f471387fe848749a461f2 [2019-10-15 03:05:02,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:05:02,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:05:02,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:02,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:05:02,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:05:02,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba71078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02, skipping insertion in model container [2019-10-15 03:05:02,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,172 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:05:02,193 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:05:02,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:02,410 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:05:02,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:02,446 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:05:02,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02 WrapperNode [2019-10-15 03:05:02,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:02,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:05:02,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:05:02,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:05:02,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (1/1) ... [2019-10-15 03:05:02,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:05:02,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:05:02,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:05:02,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:05:02,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (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 03:05:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:05:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:05:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:05:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:05:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:05:02,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:05:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:05:02,907 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:05:02,908 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:05:02,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:02 BoogieIcfgContainer [2019-10-15 03:05:02,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:05:02,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:05:02,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:05:02,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:05:02,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:02" (1/3) ... [2019-10-15 03:05:02,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6b6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:02, skipping insertion in model container [2019-10-15 03:05:02,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:02" (2/3) ... [2019-10-15 03:05:02,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6b6c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:02, skipping insertion in model container [2019-10-15 03:05:02,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:02" (3/3) ... [2019-10-15 03:05:02,952 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-10-15 03:05:02,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:05:03,004 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:05:03,024 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:05:03,059 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:05:03,059 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:05:03,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:05:03,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:05:03,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:05:03,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:05:03,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:05:03,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:05:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-15 03:05:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:05:03,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:03,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:03,094 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1402897764, now seen corresponding path program 1 times [2019-10-15 03:05:03,120 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:03,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881048059] [2019-10-15 03:05:03,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:03,255 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 03:05:03,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881048059] [2019-10-15 03:05:03,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:03,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:05:03,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910932453] [2019-10-15 03:05:03,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:05:03,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:03,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:05:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:05:03,276 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-15 03:05:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:03,311 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2019-10-15 03:05:03,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:05:03,313 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:05:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:03,325 INFO L225 Difference]: With dead ends: 41 [2019-10-15 03:05:03,325 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 03:05:03,333 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 03:05:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 03:05:03,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 03:05:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 03:05:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-10-15 03:05:03,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-10-15 03:05:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:03,389 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-10-15 03:05:03,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:05:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-10-15 03:05:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:05:03,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:03,390 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:03,391 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-10-15 03:05:03,392 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:03,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944243879] [2019-10-15 03:05:03,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:03,556 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 03:05:03,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944243879] [2019-10-15 03:05:03,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:05:03,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:05:03,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688446438] [2019-10-15 03:05:03,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:05:03,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:05:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:05:03,560 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2019-10-15 03:05:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:03,684 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-15 03:05:03,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:05:03,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:05:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:03,686 INFO L225 Difference]: With dead ends: 25 [2019-10-15 03:05:03,686 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 03:05:03,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:05:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 03:05:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 03:05:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 03:05:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 03:05:03,699 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-10-15 03:05:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:03,700 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 03:05:03,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:05:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 03:05:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 03:05:03,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:03,701 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:03,702 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -892290774, now seen corresponding path program 1 times [2019-10-15 03:05:03,703 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:03,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174922448] [2019-10-15 03:05:03,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:03,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:03,722 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:05:03,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481082237] [2019-10-15 03:05:03,722 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 03:05:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:03,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 03:05:03,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:05:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:05:03,892 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:05:03,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:04,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:04,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:05:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:05:04,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174922448] [2019-10-15 03:05:04,084 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:05:04,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481082237] [2019-10-15 03:05:04,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751746543] [2019-10-15 03:05:04,118 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 03:05:04,119 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:05:04,128 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:05:04,147 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:05:04,148 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:05:04,224 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:05:04,399 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:05:04,445 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:05:04,449 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:05:04,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:05:04,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2019-10-15 03:05:04,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978693518] [2019-10-15 03:05:04,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:05:04,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:04,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:05:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:05:04,742 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2019-10-15 03:05:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:04,820 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-10-15 03:05:04,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:05:04,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-15 03:05:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:04,822 INFO L225 Difference]: With dead ends: 41 [2019-10-15 03:05:04,823 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 03:05:04,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:05:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 03:05:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-15 03:05:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 03:05:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-15 03:05:04,836 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 15 [2019-10-15 03:05:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:04,837 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-15 03:05:04,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:05:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-15 03:05:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 03:05:04,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:05:04,838 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:05:05,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:05:05,044 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:05:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:05:05,045 INFO L82 PathProgramCache]: Analyzing trace with hash -751011113, now seen corresponding path program 1 times [2019-10-15 03:05:05,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:05:05,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717605114] [2019-10-15 03:05:05,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:05,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:05:05,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:05:05,058 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:05:05,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367721430] [2019-10-15 03:05:05,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:05:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:05:05,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 03:05:05,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:05:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:05:05,185 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:05:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:05:05,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717605114] [2019-10-15 03:05:05,378 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:05:05,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367721430] [2019-10-15 03:05:05,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36380317] [2019-10-15 03:05:05,382 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:05:05,383 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:05:05,384 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:05:05,384 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:05:05,385 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:05:05,409 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:05:06,066 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:05:06,130 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:05:06,134 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:05:06,444 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:05:06,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2019-10-15 03:05:06,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867006218] [2019-10-15 03:05:06,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 03:05:06,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:05:06,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 03:05:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:05:06,447 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 20 states. [2019-10-15 03:05:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:05:06,836 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-10-15 03:05:06,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:05:06,837 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2019-10-15 03:05:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:05:06,838 INFO L225 Difference]: With dead ends: 44 [2019-10-15 03:05:06,838 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:05:06,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:05:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:05:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:05:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:05:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:05:06,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-15 03:05:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:05:06,841 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:05:06,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 03:05:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:05:06,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:05:07,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:05:07,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:05:07,442 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:05:07,443 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:05:07,443 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:05:07,443 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:05:07,443 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:05:07,443 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:05:07,443 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-10-15 03:05:07,444 INFO L443 ceAbstractionStarter]: For program point L26(lines 23 35) no Hoare annotation was computed. [2019-10-15 03:05:07,445 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,445 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-10-15 03:05:07,446 INFO L439 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,447 INFO L439 ceAbstractionStarter]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,447 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,447 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 35) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,447 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-15 03:05:07,448 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,448 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~a~0) 1))) (and (<= main_~n~0 2147483647) (= (let ((.cse0 (+ main_~a~0 1))) (* .cse0 .cse0)) main_~s~0) (<= 0 (+ main_~n~0 2147483648)) (<= 0 main_~a~0) (<= .cse1 main_~t~0) (<= main_~t~0 .cse1))) [2019-10-15 03:05:07,449 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-15 03:05:07,450 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-15 03:05:07,450 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-15 03:05:07,450 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-15 03:05:07,450 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-15 03:05:07,450 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-15 03:05:07,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:05:07 BoogieIcfgContainer [2019-10-15 03:05:07,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:05:07,481 INFO L168 Benchmark]: Toolchain (without parser) took 5323.97 ms. Allocated memory was 142.1 MB in the beginning and 244.3 MB in the end (delta: 102.2 MB). Free memory was 104.0 MB in the beginning and 173.9 MB in the end (delta: -69.9 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,483 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.95 ms. Allocated memory is still 142.1 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,485 INFO L168 Benchmark]: Boogie Preprocessor took 130.48 ms. Allocated memory was 142.1 MB in the beginning and 202.4 MB in the end (delta: 60.3 MB). Free memory was 94.2 MB in the beginning and 180.7 MB in the end (delta: -86.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,486 INFO L168 Benchmark]: RCFGBuilder took 332.96 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 168.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,487 INFO L168 Benchmark]: TraceAbstraction took 4562.43 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 168.0 MB in the beginning and 173.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:05:07,492 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 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.95 ms. Allocated memory is still 142.1 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.48 ms. Allocated memory was 142.1 MB in the beginning and 202.4 MB in the end (delta: 60.3 MB). Free memory was 94.2 MB in the beginning and 180.7 MB in the end (delta: -86.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.96 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 168.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4562.43 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 168.0 MB in the beginning and 173.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((n <= 2147483647 && (a + 1) * (a + 1) == s) && 0 <= n + 2147483648) && 0 <= a) && 2 * a + 1 <= t) && t <= 2 * a + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 84 SDtfs, 36 SDslu, 204 SDs, 0 SdLazy, 244 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 35 PreInvPairs, 56 NumberOfFragments, 250 HoareAnnotationTreeSize, 35 FomulaSimplifications, 216 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 413 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 10061 SizeOfPredicates, 8 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 48/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1084, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 96, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 20, TOOLS_POST_CALL_APPLICATIONS: 43, TOOLS_POST_CALL_TIME[ms]: 156, TOOLS_POST_RETURN_APPLICATIONS: 34, TOOLS_POST_RETURN_TIME[ms]: 57, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME[ms]: 191, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12, FLUID_QUERY_TIME[ms]: 9, FLUID_QUERIES: 99, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 69, DOMAIN_JOIN_TIME[ms]: 625, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 64, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME[ms]: 25, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 437, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 436, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 34, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 37, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 36, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 8, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 193, DAG_COMPRESSION_RETAINED_NODES: 120, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...