/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/list-ext3-properties/dll_circular_traversal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:03:29,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:03:29,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:03:29,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:03:29,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:03:29,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:03:29,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:03:29,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:03:29,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:03:29,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:03:29,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:03:29,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:03:29,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:03:29,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:03:29,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:03:29,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:03:29,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:03:29,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:03:29,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:03:29,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:03:29,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:03:29,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:03:29,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:03:29,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:03:29,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:03:29,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:03:29,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:03:29,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:03:29,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:03:29,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:03:29,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:03:29,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:03:29,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:03:29,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:03:29,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:03:29,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:03:29,495 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 04:03:29,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:03:29,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:03:29,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:03:29,528 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:03:29,529 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:03:29,529 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:03:29,529 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:03:29,529 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:03:29,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:03:29,529 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:03:29,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:03:29,531 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:03:29,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:03:29,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:03:29,532 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:03:29,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:03:29,533 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:03:29,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:03:29,534 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:03:29,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:03:29,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:03:29,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:03:29,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:03:29,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:03:29,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:03:29,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:03:29,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:03:29,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:03:29,537 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:03:29,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:03:29,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:03:29,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:03:29,539 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:03:29,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:03:29,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:03:29,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:03:29,815 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:03:29,815 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:03:29,816 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_circular_traversal-2.i [2019-11-24 04:03:29,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01195e30e/5a23b5558443488fae77c25969cc4da0/FLAG18d033ef3 [2019-11-24 04:03:30,458 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:03:30,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_circular_traversal-2.i [2019-11-24 04:03:30,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01195e30e/5a23b5558443488fae77c25969cc4da0/FLAG18d033ef3 [2019-11-24 04:03:30,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01195e30e/5a23b5558443488fae77c25969cc4da0 [2019-11-24 04:03:30,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:03:30,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:03:30,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:30,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:03:30,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:03:30,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:30" (1/1) ... [2019-11-24 04:03:30,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73477770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:30, skipping insertion in model container [2019-11-24 04:03:30,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:03:30" (1/1) ... [2019-11-24 04:03:30,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:03:30,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:03:31,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:31,268 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:03:31,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:03:31,375 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:03:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31 WrapperNode [2019-11-24 04:03:31,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:03:31,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:31,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:03:31,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:03:31,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:03:31,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:03:31,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:03:31,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:03:31,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (1/1) ... [2019-11-24 04:03:31,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:03:31,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:03:31,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:03:31,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:03:31,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (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 04:03:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 04:03:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:03:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:03:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:03:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:03:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:03:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:03:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:03:32,038 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:03:32,039 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-24 04:03:32,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:32 BoogieIcfgContainer [2019-11-24 04:03:32,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:03:32,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:03:32,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:03:32,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:03:32,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:03:30" (1/3) ... [2019-11-24 04:03:32,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ede54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:32, skipping insertion in model container [2019-11-24 04:03:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:03:31" (2/3) ... [2019-11-24 04:03:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ede54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:03:32, skipping insertion in model container [2019-11-24 04:03:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:03:32" (3/3) ... [2019-11-24 04:03:32,049 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-11-24 04:03:32,059 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:03:32,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:03:32,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:03:32,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:03:32,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:03:32,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:03:32,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:03:32,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:03:32,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:03:32,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:03:32,099 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:03:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-24 04:03:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:03:32,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:32,119 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:03:32,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1037880396, now seen corresponding path program 1 times [2019-11-24 04:03:32,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:32,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958993583] [2019-11-24 04:03:32,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:32,327 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 04:03:32,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958993583] [2019-11-24 04:03:32,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:03:32,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:03:32,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883206000] [2019-11-24 04:03:32,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:03:32,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:03:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:03:32,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:03:32,349 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-11-24 04:03:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:03:32,392 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2019-11-24 04:03:32,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:03:32,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 04:03:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:03:32,407 INFO L225 Difference]: With dead ends: 33 [2019-11-24 04:03:32,408 INFO L226 Difference]: Without dead ends: 15 [2019-11-24 04:03:32,411 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 04:03:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-24 04:03:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-24 04:03:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-24 04:03:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-24 04:03:32,440 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2019-11-24 04:03:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:03:32,441 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-24 04:03:32,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:03:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-24 04:03:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:03:32,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:03:32,442 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:03:32,442 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:03:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:03:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1448138322, now seen corresponding path program 1 times [2019-11-24 04:03:32,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:03:32,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274669865] [2019-11-24 04:03:32,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:03:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:32,520 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 04:03:32,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274669865] [2019-11-24 04:03:32,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76376344] [2019-11-24 04:03:32,521 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 04:03:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:03:32,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 04:03:32,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:03:32,659 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 04:03:32,660 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:03:32,685 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 04:03:32,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1275514421] [2019-11-24 04:03:32,729 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:03:32,729 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:03:32,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:03:32,742 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:03:32,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:03:33,014 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:33,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:34,118 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2019-11-24 04:03:34,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:35,055 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:35,710 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:36,537 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 428 [2019-11-24 04:03:36,840 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-11-24 04:03:37,073 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 436 [2019-11-24 04:03:37,376 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-11-24 04:03:37,415 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:38,134 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 419 [2019-11-24 04:03:38,299 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 423 [2019-11-24 04:03:38,578 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 427 [2019-11-24 04:03:38,822 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 431 [2019-11-24 04:03:39,498 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-11-24 04:03:39,810 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 439 [2019-11-24 04:03:41,859 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-11-24 04:03:42,786 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:42,909 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:43,550 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:44,655 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 274 [2019-11-24 04:03:44,666 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:44,775 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:46,082 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 745 [2019-11-24 04:03:46,670 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 749 [2019-11-24 04:03:46,944 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 753 [2019-11-24 04:03:47,250 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 757 [2019-11-24 04:03:48,367 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 761 [2019-11-24 04:03:48,634 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 765 [2019-11-24 04:03:50,774 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 769 [2019-11-24 04:03:52,249 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 773 [2019-11-24 04:03:53,040 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 777 [2019-11-24 04:03:58,257 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:03:58,459 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 763 [2019-11-24 04:03:59,502 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 767 [2019-11-24 04:03:59,740 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 771 [2019-11-24 04:04:00,091 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 768 [2019-11-24 04:04:00,490 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 772 [2019-11-24 04:04:00,774 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 776 [2019-11-24 04:04:01,057 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 780 [2019-11-24 04:04:01,433 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 784 [2019-11-24 04:04:02,276 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 788 [2019-11-24 04:04:02,536 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 792 [2019-11-24 04:04:02,772 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 796 [2019-11-24 04:04:03,195 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 800 [2019-11-24 04:04:11,396 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 793 [2019-11-24 04:04:12,258 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:12,429 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 758 [2019-11-24 04:04:13,187 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:13,353 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 722 [2019-11-24 04:04:13,932 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:04:14,086 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 686 [2019-11-24 04:04:20,989 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_dll_circular_create_~new_head~0.offset 4) |ULTIMATE.start_dll_circular_create_#t~malloc3.offset|) [2019-11-24 04:04:26,789 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_dll_circular_create_~last~0.base) (+ ULTIMATE.start_dll_circular_create_~last~0.offset 8)) |ULTIMATE.start_dll_circular_create_#t~malloc3.offset|) [2019-11-24 04:04:28,794 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_dll_circular_create_~new_head~0.base) (+ ULTIMATE.start_dll_circular_create_~new_head~0.offset 4)) |ULTIMATE.start_dll_circular_create_#t~malloc3.offset|) [2019-11-24 04:04:32,867 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_$Pointer$.offset| ULTIMATE.start_dll_circular_create_~new_head~0.base) ULTIMATE.start_dll_circular_create_~new_head~0.offset) |ULTIMATE.start_dll_circular_create_#t~malloc3.offset|) [2019-11-24 04:04:33,027 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 682 [2019-11-24 04:04:38,808 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_dll_circular_create_~last~0.offset 4) (+ ULTIMATE.start_dll_circular_create_~last~0.offset 8)) [2019-11-24 04:04:55,334 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 678 [2019-11-24 04:05:06,107 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:06,236 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 642 [2019-11-24 04:05:06,275 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:08,042 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 606 [2019-11-24 04:05:08,079 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:10,354 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-11-24 04:05:10,666 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-24 04:05:11,030 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:11,177 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:11,947 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:05:12,936 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 757