/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/loop-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:17:53,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:17:53,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:17:53,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:17:53,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:17:53,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:17:53,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:17:53,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:17:53,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:17:53,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:17:53,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:17:53,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:17:53,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:17:53,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:17:53,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:17:53,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:17:53,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:17:53,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:17:53,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:17:53,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:17:53,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:17:53,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:17:53,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:17:53,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:17:53,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:17:53,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:17:53,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:17:53,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:17:53,866 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 04:17:53,881 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:17:53,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:17:53,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:17:53,882 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:17:53,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:17:53,882 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:17:53,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:17:53,883 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:17:53,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:17:53,883 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:17:53,883 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:17:53,883 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:17:53,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:17:53,884 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:17:53,884 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:17:53,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:17:53,885 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:17:53,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:17:53,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:17:53,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:17:53,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:17:53,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:17:53,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:17:53,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:17:53,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:17:53,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:17:53,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:17:53,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:17:53,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:17:53,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:17:53,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:17:53,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:17:53,889 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:17:54,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:17:54,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:17:54,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:17:54,187 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:17:54,187 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:17:54,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2019-11-24 04:17:54,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc76c64/d94abb9fd0694716b229b477acf7ae22/FLAG3b11fd21b [2019-11-24 04:17:54,753 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:17:54,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2019-11-24 04:17:54,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc76c64/d94abb9fd0694716b229b477acf7ae22/FLAG3b11fd21b [2019-11-24 04:17:55,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc76c64/d94abb9fd0694716b229b477acf7ae22 [2019-11-24 04:17:55,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:17:55,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:17:55,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:17:55,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:17:55,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:17:55,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d2c937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55, skipping insertion in model container [2019-11-24 04:17:55,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:17:55,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:17:55,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:17:55,406 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:17:55,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:17:55,434 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:17:55,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55 WrapperNode [2019-11-24 04:17:55,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:17:55,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:17:55,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:17:55,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:17:55,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:17:55,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:17:55,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:17:55,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:17:55,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (1/1) ... [2019-11-24 04:17:55,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:17:55,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:17:55,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:17:55,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:17:55,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (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 04:17:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:17:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:17:55,789 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:17:55,790 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:17:55,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:17:55 BoogieIcfgContainer [2019-11-24 04:17:55,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:17:55,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:17:55,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:17:55,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:17:55,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:17:55" (1/3) ... [2019-11-24 04:17:55,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0b596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:17:55, skipping insertion in model container [2019-11-24 04:17:55,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:17:55" (2/3) ... [2019-11-24 04:17:55,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d0b596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:17:55, skipping insertion in model container [2019-11-24 04:17:55,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:17:55" (3/3) ... [2019-11-24 04:17:55,800 INFO L109 eAbstractionObserver]: Analyzing ICFG mod4.c [2019-11-24 04:17:55,811 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:17:55,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:17:55,827 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:17:55,851 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:17:55,852 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:17:55,852 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:17:55,852 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:17:55,852 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:17:55,852 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:17:55,852 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:17:55,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:17:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-24 04:17:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:17:55,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:17:55,869 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:17:55,869 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:17:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:17:55,874 INFO L82 PathProgramCache]: Analyzing trace with hash 29954948, now seen corresponding path program 1 times [2019-11-24 04:17:55,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:17:55,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144271996] [2019-11-24 04:17:55,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:17:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:17:55,965 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 04:17:55,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144271996] [2019-11-24 04:17:55,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:17:55,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:17:55,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777022151] [2019-11-24 04:17:55,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:17:55,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:17:55,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:17:55,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:17:55,988 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2019-11-24 04:17:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:17:56,000 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-24 04:17:56,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:17:56,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-24 04:17:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:17:56,009 INFO L225 Difference]: With dead ends: 15 [2019-11-24 04:17:56,009 INFO L226 Difference]: Without dead ends: 7 [2019-11-24 04:17:56,012 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 [2019-11-24 04:17:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-24 04:17:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-24 04:17:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-24 04:17:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-24 04:17:56,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-24 04:17:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:17:56,039 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-24 04:17:56,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:17:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-24 04:17:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:17:56,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:17:56,040 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:17:56,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:17:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:17:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash 921957070, now seen corresponding path program 1 times [2019-11-24 04:17:56,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:17:56,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956057101] [2019-11-24 04:17:56,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:17:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:17:56,290 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2019-11-24 04:17:56,302 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 04:17:56,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956057101] [2019-11-24 04:17:56,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:17:56,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:17:56,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275234243] [2019-11-24 04:17:56,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:17:56,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:17:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:17:56,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:17:56,308 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-11-24 04:17:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:17:56,351 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-11-24 04:17:56,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:17:56,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-24 04:17:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:17:56,352 INFO L225 Difference]: With dead ends: 7 [2019-11-24 04:17:56,352 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:17:56,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:17:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:17:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:17:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:17:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:17:56,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-24 04:17:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:17:56,355 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:17:56,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:17:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:17:56,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:17:56,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:17:56,399 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:17:56,400 INFO L444 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2019-11-24 04:17:56,400 INFO L440 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 (let ((.cse0 (div ULTIMATE.start_main_~x~0 4))) (+ (* 4 .cse0) (* 4294967296 (div (+ (* .cse0 (- 4)) ULTIMATE.start_main_~x~0) 4294967296))))) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-24 04:17:56,400 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-11-24 04:17:56,401 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-24 04:17:56,401 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:17:56,401 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-24 04:17:56,401 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-24 04:17:56,402 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-24 04:17:56,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:17:56 BoogieIcfgContainer [2019-11-24 04:17:56,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:17:56,423 INFO L168 Benchmark]: Toolchain (without parser) took 1233.33 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 132.6 MB in the end (delta: -32.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,424 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.57 ms. Allocated memory is still 142.1 MB. Free memory was 99.8 MB in the beginning and 90.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.54 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 177.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,432 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 177.2 MB in the end (delta: 706.8 kB). Peak memory consumption was 706.8 kB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,433 INFO L168 Benchmark]: RCFGBuilder took 218.42 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 166.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,434 INFO L168 Benchmark]: TraceAbstraction took 627.14 ms. Allocated memory is still 199.2 MB. Free memory was 165.3 MB in the beginning and 132.6 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2019-11-24 04:17:56,444 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.57 ms. Allocated memory is still 142.1 MB. Free memory was 99.8 MB in the beginning and 90.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 116.54 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 177.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 177.2 MB in the end (delta: 706.8 kB). Peak memory consumption was 706.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 218.42 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 166.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 627.14 ms. Allocated memory is still 199.2 MB. Free memory was 165.3 MB in the beginning and 132.6 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 4 * (x / 4) + 4294967296 * ((x / 4 * -4 + x) / 4294967296) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 24 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...