/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/rangesum20.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:42:26,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:42:26,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:42:26,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:42:26,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:42:26,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:42:26,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:42:26,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:42:26,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:42:26,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:42:26,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:42:26,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:42:26,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:42:26,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:42:26,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:42:26,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:42:26,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:42:26,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:42:26,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:42:26,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:42:26,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:42:26,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:42:26,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:42:26,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:42:26,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:42:26,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:42:26,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:42:26,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:42:26,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:42:26,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:42:26,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:42:26,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:42:26,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:42:26,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:42:26,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:42:26,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:42:26,469 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 05:42:26,484 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:42:26,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:42:26,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:42:26,485 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:42:26,486 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:42:26,486 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:42:26,486 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:42:26,486 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:42:26,486 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:42:26,487 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:42:26,487 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:42:26,487 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:42:26,487 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:42:26,487 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:42:26,488 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:42:26,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:42:26,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:42:26,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:42:26,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:42:26,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:42:26,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:42:26,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:42:26,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:42:26,490 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:42:26,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:42:26,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:42:26,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:42:26,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:42:26,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:42:26,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:42:26,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:42:26,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:42:26,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:42:26,492 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:42:26,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:42:26,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:42:26,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:42:26,493 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:42:26,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:42:26,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:42:26,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:42:26,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:42:26,783 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:42:26,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum20.i [2019-11-24 05:42:26,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463fd58da/5a4edeee68ba4b4e9cd57a2b667ecd00/FLAGa9f61d400 [2019-11-24 05:42:27,311 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:42:27,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum20.i [2019-11-24 05:42:27,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463fd58da/5a4edeee68ba4b4e9cd57a2b667ecd00/FLAGa9f61d400 [2019-11-24 05:42:27,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463fd58da/5a4edeee68ba4b4e9cd57a2b667ecd00 [2019-11-24 05:42:27,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:42:27,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:42:27,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:42:27,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:42:27,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:42:27,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:42:27" (1/1) ... [2019-11-24 05:42:27,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd1b4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:27, skipping insertion in model container [2019-11-24 05:42:27,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:42:27" (1/1) ... [2019-11-24 05:42:27,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:42:27,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:42:27,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:42:27,968 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:42:28,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:42:28,027 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:42:28,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28 WrapperNode [2019-11-24 05:42:28,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:42:28,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:42:28,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:42:28,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:42:28,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:42:28,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:42:28,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:42:28,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:42:28,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (1/1) ... [2019-11-24 05:42:28,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:42:28,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:42:28,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:42:28,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:42:28,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (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 05:42:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 05:42:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:42:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:42:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 05:42:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:42:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 05:42:29,224 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:42:29,225 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-24 05:42:29,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:42:29 BoogieIcfgContainer [2019-11-24 05:42:29,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:42:29,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:42:29,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:42:29,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:42:29,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:42:27" (1/3) ... [2019-11-24 05:42:29,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71f5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:42:29, skipping insertion in model container [2019-11-24 05:42:29,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:42:28" (2/3) ... [2019-11-24 05:42:29,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71f5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:42:29, skipping insertion in model container [2019-11-24 05:42:29,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:42:29" (3/3) ... [2019-11-24 05:42:29,235 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2019-11-24 05:42:29,244 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:42:29,252 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:42:29,263 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:42:29,283 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:42:29,283 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:42:29,284 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:42:29,284 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:42:29,284 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:42:29,284 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:42:29,284 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:42:29,284 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:42:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 05:42:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:42:29,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:42:29,303 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:42:29,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:42:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:42:29,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2021687706, now seen corresponding path program 1 times [2019-11-24 05:42:29,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:42:29,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379381963] [2019-11-24 05:42:29,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:42:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:42:29,478 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 05:42:29,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379381963] [2019-11-24 05:42:29,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:42:29,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:42:29,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241266065] [2019-11-24 05:42:29,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:42:29,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:42:29,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:42:29,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:42:29,506 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-24 05:42:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:42:29,538 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-24 05:42:29,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:42:29,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:42:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:42:29,553 INFO L225 Difference]: With dead ends: 21 [2019-11-24 05:42:29,553 INFO L226 Difference]: Without dead ends: 10 [2019-11-24 05:42:29,558 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 05:42:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-24 05:42:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-24 05:42:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 05:42:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-24 05:42:29,599 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-24 05:42:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:42:29,599 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-24 05:42:29,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:42:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-24 05:42:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:42:29,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:42:29,600 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:42:29,601 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:42:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:42:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -560701834, now seen corresponding path program 1 times [2019-11-24 05:42:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:42:29,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402161590] [2019-11-24 05:42:29,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:42:29,618 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 05:42:29,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279058207] [2019-11-24 05:42:29,619 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 05:42:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:42:29,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:42:29,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:42:29,727 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 05:42:29,727 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:42:29,738 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 05:42:29,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402161590] [2019-11-24 05:42:29,739 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:42:29,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279058207] [2019-11-24 05:42:29,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:42:29,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-24 05:42:29,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200183478] [2019-11-24 05:42:29,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:42:29,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:42:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:42:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:42:29,742 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-24 05:42:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:42:29,812 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-24 05:42:29,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:42:29,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 05:42:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:42:29,814 INFO L225 Difference]: With dead ends: 22 [2019-11-24 05:42:29,815 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 05:42:29,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:42:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 05:42:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-24 05:42:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 05:42:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-24 05:42:29,826 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-24 05:42:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:42:29,826 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-24 05:42:29,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:42:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-24 05:42:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:42:29,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:42:29,829 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:42:30,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:42:30,037 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:42:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:42:30,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1964460554, now seen corresponding path program 1 times [2019-11-24 05:42:30,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:42:30,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326545429] [2019-11-24 05:42:30,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:42:30,081 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 05:42:30,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335285255] [2019-11-24 05:42:30,083 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 05:42:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:42:30,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:42:30,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:42:30,189 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 05:42:30,193 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:42:30,205 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 05:42:30,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326545429] [2019-11-24 05:42:30,206 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:42:30,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335285255] [2019-11-24 05:42:30,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:42:30,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-24 05:42:30,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537808414] [2019-11-24 05:42:30,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:42:30,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:42:30,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:42:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:42:30,209 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-24 05:42:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:42:30,228 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-24 05:42:30,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:42:30,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-24 05:42:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:42:30,230 INFO L225 Difference]: With dead ends: 24 [2019-11-24 05:42:30,231 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 05:42:30,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:42:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 05:42:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 05:42:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 05:42:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 05:42:30,238 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-24 05:42:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:42:30,238 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 05:42:30,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:42:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 05:42:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:42:30,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:42:30,239 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:42:30,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:42:30,443 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:42:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:42:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -183512330, now seen corresponding path program 1 times [2019-11-24 05:42:30,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:42:30,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812792298] [2019-11-24 05:42:30,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:42:30,476 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 05:42:30,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746069434] [2019-11-24 05:42:30,477 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 05:42:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:42:30,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:42:30,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:42:30,580 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 05:42:30,580 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:42:30,596 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 05:42:30,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812792298] [2019-11-24 05:42:30,597 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:42:30,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746069434] [2019-11-24 05:42:30,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668427087] [2019-11-24 05:42:30,623 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:42:30,623 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:42:30,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:42:30,641 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:42:30,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:42:32,443 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 130 [2019-11-24 05:42:44,772 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2019-11-24 05:42:47,569 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-24 05:42:47,955 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-24 05:42:48,099 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 243 [2019-11-24 05:42:48,392 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2019-11-24 05:42:48,815 WARN L192 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 303 [2019-11-24 05:42:49,249 WARN L192 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 470 [2019-11-24 05:42:49,714 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 470 [2019-11-24 05:42:50,885 WARN L192 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 954 [2019-11-24 05:42:52,887 WARN L192 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 955 DAG size of output: 917 [2019-11-24 05:42:55,828 WARN L192 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 1908 [2019-11-24 05:43:00,566 WARN L192 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 1909 DAG size of output: 1909 [2019-11-24 05:43:11,302 WARN L192 SmtUtils]: Spent 10.51 s on a formula simplification that was a NOOP. DAG size: 3993 [2019-11-24 05:43:29,087 WARN L192 SmtUtils]: Spent 11.57 s on a formula simplification. DAG size of input: 3994 DAG size of output: 3993