/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:30:25,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:30:25,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:30:25,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:30:25,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:30:25,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:30:25,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:30:25,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:30:25,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:30:25,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:30:25,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:30:25,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:30:25,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:30:25,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:30:25,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:30:25,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:30:25,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:30:25,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:30:25,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:30:25,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:30:25,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:30:25,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:30:25,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:30:25,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:30:25,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:30:25,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:30:25,790 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:30:25,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:30:25,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:30:25,792 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:30:25,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:30:25,792 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:30:25,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:30:25,792 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:30:25,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:30:25,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:30:25,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:30:25,793 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:30:25,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:30:25,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:30:25,794 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:30:25,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:30:25,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:30:25,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:30:25,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:30:25,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:30:25,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:30:25,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:30:25,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:30:25,796 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:30:25,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:30:25,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:30:25,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:30:25,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:30:25,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:30:25,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:30:25,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:30:25,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:30:25,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:30:25,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:30:25,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:30:25,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:30:25,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:30:25,799 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:30:26,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:30:26,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:30:26,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:30:26,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:30:26,086 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:30:26,087 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps2.c [2019-11-24 04:30:26,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bec9355c/6fdaf5ba6fc549ed90336eebd9fc1d0d/FLAGe1ddff11e [2019-11-24 04:30:26,646 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:30:26,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps2.c [2019-11-24 04:30:26,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bec9355c/6fdaf5ba6fc549ed90336eebd9fc1d0d/FLAGe1ddff11e [2019-11-24 04:30:27,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bec9355c/6fdaf5ba6fc549ed90336eebd9fc1d0d [2019-11-24 04:30:27,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:30:27,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:30:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:27,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:30:27,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:30:27,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a725cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27, skipping insertion in model container [2019-11-24 04:30:27,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:30:27,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:30:27,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:27,265 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:30:27,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:30:27,291 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:30:27,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27 WrapperNode [2019-11-24 04:30:27,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:30:27,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:27,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:30:27,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:30:27,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:30:27,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:30:27,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:30:27,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:30:27,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (1/1) ... [2019-11-24 04:30:27,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:30:27,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:30:27,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:30:27,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:30:27,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (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 [2019-11-24 04:30:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:30:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:30:27,680 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:30:27,680 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-24 04:30:27,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:27 BoogieIcfgContainer [2019-11-24 04:30:27,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:30:27,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:30:27,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:30:27,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:30:27,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:30:27" (1/3) ... [2019-11-24 04:30:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1129d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:27, skipping insertion in model container [2019-11-24 04:30:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:30:27" (2/3) ... [2019-11-24 04:30:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1129d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:30:27, skipping insertion in model container [2019-11-24 04:30:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:30:27" (3/3) ... [2019-11-24 04:30:27,688 INFO L109 eAbstractionObserver]: Analyzing ICFG ps2.c [2019-11-24 04:30:27,698 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:30:27,705 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:30:27,717 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:30:27,743 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:30:27,744 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:30:27,744 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:30:27,744 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:30:27,744 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:30:27,744 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:30:27,744 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:30:27,745 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:30:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-24 04:30:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:30:27,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:30:27,764 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:30:27,764 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:30:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:30:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-24 04:30:27,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:30:27,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362779728] [2019-11-24 04:30:27,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:30:27,856 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:30:27,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520919123] [2019-11-24 04:30:27,857 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 [2019-11-24 04:30:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:30:27,888 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-24 04:30:27,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:30:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:30:27,963 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:30:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:30:28,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362779728] [2019-11-24 04:30:28,039 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:30:28,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520919123] [2019-11-24 04:30:28,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:30:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-24 04:30:28,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510685344] [2019-11-24 04:30:28,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:30:28,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:30:28,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:30:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:30:28,065 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2019-11-24 04:30:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:30:28,232 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2019-11-24 04:30:28,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:30:28,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-24 04:30:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:30:28,244 INFO L225 Difference]: With dead ends: 26 [2019-11-24 04:30:28,245 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:30:28,251 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:30:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:30:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:30:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:30:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:30:28,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-24 04:30:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:30:28,282 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:30:28,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:30:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:30:28,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:30:28,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:30:28,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:30:28,637 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:30:28,637 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-24 04:30:28,637 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-11-24 04:30:28,638 INFO L440 ceAbstractionStarter]: At program point L5-2(lines 23 24) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))) [2019-11-24 04:30:28,638 INFO L444 ceAbstractionStarter]: For program point L5-3(lines 5 8) no Hoare annotation was computed. [2019-11-24 04:30:28,638 INFO L440 ceAbstractionStarter]: At program point L5-5(lines 4 10) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))) [2019-11-24 04:30:28,638 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:30:28,639 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-24 04:30:28,639 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 20 29) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0))) [2019-11-24 04:30:28,639 INFO L444 ceAbstractionStarter]: For program point L20-3(lines 20 29) no Hoare annotation was computed. [2019-11-24 04:30:28,639 INFO L444 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-11-24 04:30:28,640 INFO L444 ceAbstractionStarter]: For program point L6-1(lines 6 7) no Hoare annotation was computed. [2019-11-24 04:30:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:30:28 BoogieIcfgContainer [2019-11-24 04:30:28,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:30:28,660 INFO L168 Benchmark]: Toolchain (without parser) took 1600.46 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 128.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,661 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-24 04:30:28,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.41 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.31 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,664 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 178.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,665 INFO L168 Benchmark]: RCFGBuilder took 256.32 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 166.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,666 INFO L168 Benchmark]: TraceAbstraction took 975.35 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 128.0 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:30:28,671 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.41 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 92.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 109.31 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 178.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.32 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 166.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 975.35 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 128.0 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 == cond && x * 2 == y * y + y - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (1 == cond && y * y + y == 2 * x) || (x == 0 && y == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 == cond && x * 2 == y * y + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 3 SDtfs, 25 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 47 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 4 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...