/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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:40:53,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:40:53,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:40:53,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:40:53,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:40:53,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:40:53,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:40:53,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:40:53,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:40:53,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:40:53,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:40:53,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:40:53,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:40:53,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:40:53,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:40:53,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:40:53,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:40:53,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:40:53,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:40:53,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:40:53,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:40:53,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:40:53,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:40:53,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:40:53,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:40:53,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:40:53,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:40:53,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:40:53,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:40:53,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:40:53,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:40:53,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:40:53,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:40:53,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:40:53,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:40:53,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:40:53,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:40:53,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:40:53,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:40:53,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:40:53,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:40:53,518 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 05:40:53,533 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:40:53,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:40:53,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:40:53,535 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:40:53,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:40:53,537 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:40:53,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:40:53,537 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:40:53,538 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:40:53,538 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:40:53,538 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:40:53,538 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:40:53,538 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:40:53,539 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:40:53,539 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:40:53,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:40:53,541 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:40:53,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:40:53,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:40:53,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:40:53,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:40:53,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:40:53,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:40:53,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:40:53,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:40:53,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:40:53,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:40:53,545 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:40:53,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:40:53,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:40:53,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:40:53,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:40:53,878 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:40:53,879 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-11-24 05:40:53,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a38397c/fd95510772b245b3a579084b8d179faf/FLAG8211b894e [2019-11-24 05:40:54,416 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:40:54,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-11-24 05:40:54,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a38397c/fd95510772b245b3a579084b8d179faf/FLAG8211b894e [2019-11-24 05:40:54,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94a38397c/fd95510772b245b3a579084b8d179faf [2019-11-24 05:40:54,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:40:54,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:40:54,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:40:54,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:40:54,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:40:54,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:40:54" (1/1) ... [2019-11-24 05:40:54,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472088b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:54, skipping insertion in model container [2019-11-24 05:40:54,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:40:54" (1/1) ... [2019-11-24 05:40:54,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:40:54,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:40:55,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:40:55,088 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:40:55,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:40:55,127 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:40:55,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55 WrapperNode [2019-11-24 05:40:55,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:40:55,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:40:55,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:40:55,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:40:55,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:40:55,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:40:55,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:40:55,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:40:55,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (1/1) ... [2019-11-24 05:40:55,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:40:55,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:40:55,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:40:55,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:40:55,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (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 05:40:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 05:40:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:40:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:40:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 05:40:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:40:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 05:40:56,005 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:40:56,005 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 05:40:56,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:40:56 BoogieIcfgContainer [2019-11-24 05:40:56,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:40:56,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:40:56,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:40:56,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:40:56,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:40:54" (1/3) ... [2019-11-24 05:40:56,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9966455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:40:56, skipping insertion in model container [2019-11-24 05:40:56,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:40:55" (2/3) ... [2019-11-24 05:40:56,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9966455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:40:56, skipping insertion in model container [2019-11-24 05:40:56,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:40:56" (3/3) ... [2019-11-24 05:40:56,016 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2019-11-24 05:40:56,027 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:40:56,036 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:40:56,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:40:56,069 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:40:56,069 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:40:56,069 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:40:56,070 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:40:56,070 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:40:56,070 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:40:56,070 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:40:56,071 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:40:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 05:40:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:40:56,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:40:56,093 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:40:56,094 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:40:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:40:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1794448249, now seen corresponding path program 1 times [2019-11-24 05:40:56,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:40:56,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742449917] [2019-11-24 05:40:56,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:40:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:56,246 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 05:40:56,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742449917] [2019-11-24 05:40:56,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:40:56,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:40:56,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166893617] [2019-11-24 05:40:56,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:40:56,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:40:56,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:40:56,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:40:56,274 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-24 05:40:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:40:56,311 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-24 05:40:56,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:40:56,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:40:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:40:56,326 INFO L225 Difference]: With dead ends: 21 [2019-11-24 05:40:56,327 INFO L226 Difference]: Without dead ends: 10 [2019-11-24 05:40:56,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:40:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-24 05:40:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-24 05:40:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 05:40:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-24 05:40:56,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-24 05:40:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:40:56,368 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-24 05:40:56,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:40:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-24 05:40:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:40:56,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:40:56,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:40:56,369 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:40:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:40:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2024605637, now seen corresponding path program 1 times [2019-11-24 05:40:56,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:40:56,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188714828] [2019-11-24 05:40:56,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:40:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:56,449 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 05:40:56,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188714828] [2019-11-24 05:40:56,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148920296] [2019-11-24 05:40:56,450 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 05:40:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:56,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:40:56,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:40:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:40:56,538 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:40:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:40:56,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:40:56,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:40:56,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952019816] [2019-11-24 05:40:56,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:40:56,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:40:56,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:40:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:40:56,557 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-24 05:40:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:40:56,623 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-24 05:40:56,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:40:56,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 05:40:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:40:56,625 INFO L225 Difference]: With dead ends: 22 [2019-11-24 05:40:56,625 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 05:40:56,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:40:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 05:40:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-24 05:40:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 05:40:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-24 05:40:56,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-24 05:40:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:40:56,635 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-24 05:40:56,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:40:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-24 05:40:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:40:56,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:40:56,638 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:40:56,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:40:56,842 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:40:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:40:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1835444987, now seen corresponding path program 1 times [2019-11-24 05:40:56,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:40:56,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201273698] [2019-11-24 05:40:56,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:40:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 05:40:56,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201273698] [2019-11-24 05:40:56,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800614148] [2019-11-24 05:40:56,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:40:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:57,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:40:57,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:40:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:40:57,044 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:40:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:40:57,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:40:57,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:40:57,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252449565] [2019-11-24 05:40:57,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:40:57,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:40:57,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:40:57,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:40:57,063 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-24 05:40:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:40:57,082 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-24 05:40:57,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:40:57,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-24 05:40:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:40:57,086 INFO L225 Difference]: With dead ends: 24 [2019-11-24 05:40:57,086 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 05:40:57,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:40:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 05:40:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 05:40:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 05:40:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 05:40:57,093 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-24 05:40:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:40:57,094 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 05:40:57,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:40:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 05:40:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:40:57,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:40:57,095 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:40:57,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:40:57,301 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:40:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:40:57,301 INFO L82 PathProgramCache]: Analyzing trace with hash 293651941, now seen corresponding path program 1 times [2019-11-24 05:40:57,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:40:57,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343775059] [2019-11-24 05:40:57,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:40:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:40:57,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343775059] [2019-11-24 05:40:57,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229465903] [2019-11-24 05:40:57,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:40:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:40:57,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:40:57,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:40:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:40:57,441 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:40:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:40:57,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1911778674] [2019-11-24 05:40:57,490 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:40:57,490 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:40:57,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:40:57,503 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:40:57,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:40:59,589 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 245 [2019-11-24 05:40:59,825 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 228 [2019-11-24 05:41:00,165 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 367 [2019-11-24 05:41:00,642 WARN L192 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 364 [2019-11-24 05:41:42,921 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0.base|) (+ |ULTIMATE.start_main_~#x~0.offset| 8)) ULTIMATE.start_main_~temp~0)