/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/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:26:42,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:26:42,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:26:42,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:26:42,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:26:42,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:26:42,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:26:42,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:26:42,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:26:42,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:26:42,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:26:42,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:26:42,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:26:42,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:26:42,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:26:42,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:26:42,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:26:42,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:26:42,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:26:42,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:26:42,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:26:42,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:26:42,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:26:42,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:26:42,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:26:42,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:26:42,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:26:42,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:26:42,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:26:42,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:26:42,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:26:42,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:26:42,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:26:42,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:26:42,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:26:42,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:26:42,677 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 04:26:42,703 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:26:42,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:26:42,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:26:42,705 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:26:42,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:26:42,705 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:26:42,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:26:42,705 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:26:42,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:26:42,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:26:42,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:26:42,706 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:26:42,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:26:42,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:26:42,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:26:42,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:26:42,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:26:42,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:26:42,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:26:42,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:26:42,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:26:42,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:26:42,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:26:42,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:26:42,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:26:42,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:26:42,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:26:42,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:26:42,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:26:42,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:26:42,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:26:42,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:26:42,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:26:42,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:26:42,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:26:42,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:26:42,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:26:42,711 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:26:42,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:26:43,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:26:43,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:26:43,008 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:26:43,009 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:26:43,009 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2019-11-24 04:26:43,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42a789a2/e50b389a20264e80a0d8015cacd377fb/FLAG50ddf0cba [2019-11-24 04:26:43,518 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:26:43,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2019-11-24 04:26:43,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42a789a2/e50b389a20264e80a0d8015cacd377fb/FLAG50ddf0cba [2019-11-24 04:26:43,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42a789a2/e50b389a20264e80a0d8015cacd377fb [2019-11-24 04:26:43,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:26:43,935 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:26:43,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:26:43,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:26:43,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:26:43,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:26:43" (1/1) ... [2019-11-24 04:26:43,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22537aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:43, skipping insertion in model container [2019-11-24 04:26:43,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:26:43" (1/1) ... [2019-11-24 04:26:43,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:26:43,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:26:44,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:26:44,161 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:26:44,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:26:44,185 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:26:44,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44 WrapperNode [2019-11-24 04:26:44,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:26:44,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:26:44,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:26:44,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:26:44,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:26:44,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:26:44,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:26:44,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:26:44,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (1/1) ... [2019-11-24 04:26:44,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:26:44,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:26:44,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:26:44,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:26:44,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (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 04:26:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:26:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:26:44,628 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:26:44,628 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:26:44,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:26:44 BoogieIcfgContainer [2019-11-24 04:26:44,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:26:44,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:26:44,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:26:44,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:26:44,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:26:43" (1/3) ... [2019-11-24 04:26:44,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:26:44, skipping insertion in model container [2019-11-24 04:26:44,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:26:44" (2/3) ... [2019-11-24 04:26:44,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:26:44, skipping insertion in model container [2019-11-24 04:26:44,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:26:44" (3/3) ... [2019-11-24 04:26:44,657 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2019-11-24 04:26:44,670 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:26:44,677 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:26:44,699 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:26:44,724 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:26:44,724 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:26:44,724 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:26:44,724 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:26:44,724 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:26:44,724 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:26:44,724 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:26:44,725 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:26:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-24 04:26:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:26:44,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:26:44,740 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:26:44,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:26:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:26:44,746 INFO L82 PathProgramCache]: Analyzing trace with hash 994444, now seen corresponding path program 1 times [2019-11-24 04:26:44,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:26:44,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380817455] [2019-11-24 04:26:44,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:26:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:26:45,017 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 04:26:45,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380817455] [2019-11-24 04:26:45,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:26:45,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:26:45,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310910610] [2019-11-24 04:26:45,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:26:45,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:26:45,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:26:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:26:45,048 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-11-24 04:26:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:26:45,121 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-24 04:26:45,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:26:45,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-24 04:26:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:26:45,137 INFO L225 Difference]: With dead ends: 15 [2019-11-24 04:26:45,137 INFO L226 Difference]: Without dead ends: 6 [2019-11-24 04:26:45,144 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 04:26:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-24 04:26:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-24 04:26:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-24 04:26:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-24 04:26:45,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-24 04:26:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:26:45,179 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-24 04:26:45,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:26:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-24 04:26:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 04:26:45,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:26:45,180 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 04:26:45,181 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:26:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:26:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash 30785444, now seen corresponding path program 1 times [2019-11-24 04:26:45,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:26:45,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114580559] [2019-11-24 04:26:45,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:26:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:26:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:26:45,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114580559] [2019-11-24 04:26:45,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350769961] [2019-11-24 04:26:45,323 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 04:26:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:26:45,361 WARN L253 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-24 04:26:45,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:26:45,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:26:45,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:26:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:26:45,449 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:26:45,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:26:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:26:45,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 04:26:45,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-11-24 04:26:45,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858801821] [2019-11-24 04:26:45,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:26:45,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:26:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:26:45,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-24 04:26:45,518 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2019-11-24 04:26:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:26:45,545 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-11-24 04:26:45,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:26:45,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-24 04:26:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:26:45,546 INFO L225 Difference]: With dead ends: 6 [2019-11-24 04:26:45,546 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:26:45,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:26:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:26:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:26:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:26:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:26:45,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-24 04:26:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:26:45,550 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:26:45,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:26:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:26:45,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:26:45,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:26:45,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:26:45,799 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:26:45,800 INFO L440 ceAbstractionStarter]: At program point L19-2(lines 19 27) the Hoare annotation is: (< (mod ULTIMATE.start_main_~len~0 4294967296) 5) [2019-11-24 04:26:45,800 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-24 04:26:45,800 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:26:45,800 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-24 04:26:45,800 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-24 04:26:45,801 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-24 04:26:45,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:26:45 BoogieIcfgContainer [2019-11-24 04:26:45,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:26:45,817 INFO L168 Benchmark]: Toolchain (without parser) took 1881.05 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 104.2 MB in the beginning and 115.1 MB in the end (delta: -10.9 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,818 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.58 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.46 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 181.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,821 INFO L168 Benchmark]: Boogie Preprocessor took 18.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 180.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,822 INFO L168 Benchmark]: RCFGBuilder took 317.33 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 166.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,823 INFO L168 Benchmark]: TraceAbstraction took 1182.87 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 115.1 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:26:45,830 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.58 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 107.46 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 181.5 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 180.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 317.33 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 166.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1182.87 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 115.1 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 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: 19]: Loop Invariant Derived loop invariant: len % 4294967296 < 5 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 2 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 3 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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...