/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/array-crafted/zero_sum_const3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:58:05,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:58:05,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:58:05,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:58:05,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:58:05,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:58:05,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:58:05,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:58:05,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:58:05,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:58:05,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:58:05,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:58:05,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:58:05,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:58:05,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:58:05,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:58:05,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:58:05,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:58:05,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:58:05,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:58:05,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:58:05,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:58:05,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:58:05,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:58:05,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:58:05,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:58:05,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:58:05,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:58:05,516 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 [2019-11-23 22:58:05,538 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:58:05,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:58:05,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:58:05,540 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:58:05,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:58:05,540 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:58:05,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:58:05,541 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:58:05,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:58:05,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:58:05,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:58:05,542 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:58:05,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:58:05,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:58:05,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:58:05,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:58:05,545 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:58:05,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:58:05,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:58:05,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:58:05,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:58:05,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:58:05,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:58:05,547 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:58:05,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:58:05,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:58:05,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:58:05,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:58:05,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:58:05,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:58:05,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:58:05,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:58:05,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:58:05,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:58:05,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:58:05,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:58:05,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:58:05,551 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:58:05,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:58:05,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:58:05,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:58:05,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:58:05,824 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:58:05,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2019-11-23 22:58:05,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb7a903f/8daf5d8deffa4f2a9b250acfcd9cab4d/FLAG40f88b09a [2019-11-23 22:58:06,335 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:58:06,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2019-11-23 22:58:06,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb7a903f/8daf5d8deffa4f2a9b250acfcd9cab4d/FLAG40f88b09a [2019-11-23 22:58:06,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb7a903f/8daf5d8deffa4f2a9b250acfcd9cab4d [2019-11-23 22:58:06,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:58:06,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:58:06,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:58:06,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:58:06,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:58:06,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:06,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1e4757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06, skipping insertion in model container [2019-11-23 22:58:06,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:06,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:58:06,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:58:06,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:58:06,949 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:58:06,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:58:06,983 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:58:06,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06 WrapperNode [2019-11-23 22:58:06,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:58:06,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:58:06,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:58:06,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:58:07,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:58:07,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:58:07,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:58:07,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:58:07,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (1/1) ... [2019-11-23 22:58:07,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:58:07,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:58:07,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:58:07,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:58:07,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (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 [2019-11-23 22:58:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:58:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 22:58:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:58:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:58:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:58:07,638 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:58:07,638 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-23 22:58:07,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:07 BoogieIcfgContainer [2019-11-23 22:58:07,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:58:07,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:58:07,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:58:07,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:58:07,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:58:06" (1/3) ... [2019-11-23 22:58:07,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ac073b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:07, skipping insertion in model container [2019-11-23 22:58:07,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:58:06" (2/3) ... [2019-11-23 22:58:07,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ac073b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:58:07, skipping insertion in model container [2019-11-23 22:58:07,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:58:07" (3/3) ... [2019-11-23 22:58:07,648 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2019-11-23 22:58:07,666 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:58:07,673 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:58:07,686 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:58:07,714 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:58:07,714 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:58:07,714 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:58:07,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:58:07,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:58:07,715 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:58:07,715 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:58:07,715 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:58:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 22:58:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:58:07,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:07,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:07,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1275808413, now seen corresponding path program 1 times [2019-11-23 22:58:07,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:07,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441712244] [2019-11-23 22:58:07,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:58:07,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441712244] [2019-11-23 22:58:07,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:07,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:58:07,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497302009] [2019-11-23 22:58:07,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:58:07,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:58:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:08,016 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-23 22:58:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:08,145 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2019-11-23 22:58:08,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:58:08,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-23 22:58:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:08,161 INFO L225 Difference]: With dead ends: 29 [2019-11-23 22:58:08,162 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 22:58:08,167 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:58:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 22:58:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-23 22:58:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:58:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 29 transitions. [2019-11-23 22:58:08,234 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 29 transitions. Word has length 11 [2019-11-23 22:58:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:08,235 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 29 transitions. [2019-11-23 22:58:08,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:58:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 29 transitions. [2019-11-23 22:58:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:58:08,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:08,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:08,238 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:08,239 INFO L82 PathProgramCache]: Analyzing trace with hash 895081300, now seen corresponding path program 1 times [2019-11-23 22:58:08,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:08,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734747749] [2019-11-23 22:58:08,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:58:08,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734747749] [2019-11-23 22:58:08,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:08,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:58:08,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354618137] [2019-11-23 22:58:08,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:58:08,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:58:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:58:08,346 INFO L87 Difference]: Start difference. First operand 18 states and 29 transitions. Second operand 3 states. [2019-11-23 22:58:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:08,393 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2019-11-23 22:58:08,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:58:08,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-23 22:58:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:08,394 INFO L225 Difference]: With dead ends: 34 [2019-11-23 22:58:08,394 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:58:08,395 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:58:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:58:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-23 22:58:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:58:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-11-23 22:58:08,402 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 12 [2019-11-23 22:58:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:08,402 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-11-23 22:58:08,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:58:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2019-11-23 22:58:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:58:08,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:08,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:08,404 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1984926007, now seen corresponding path program 1 times [2019-11-23 22:58:08,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:08,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359947075] [2019-11-23 22:58:08,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:58:08,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359947075] [2019-11-23 22:58:08,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:58:08,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:58:08,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898022471] [2019-11-23 22:58:08,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:58:08,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:58:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:58:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:08,489 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2019-11-23 22:58:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:58:08,594 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2019-11-23 22:58:08,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:58:08,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-23 22:58:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:58:08,597 INFO L225 Difference]: With dead ends: 32 [2019-11-23 22:58:08,597 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 22:58:08,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:58:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 22:58:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-23 22:58:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:58:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2019-11-23 22:58:08,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2019-11-23 22:58:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:58:08,611 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2019-11-23 22:58:08,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:58:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2019-11-23 22:58:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:58:08,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:58:08,612 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:58:08,614 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:58:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:58:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 336604779, now seen corresponding path program 1 times [2019-11-23 22:58:08,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:58:08,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038086523] [2019-11-23 22:58:08,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:58:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:08,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038086523] [2019-11-23 22:58:08,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468031467] [2019-11-23 22:58:08,731 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 [2019-11-23 22:58:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:58:08,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:58:08,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:58:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:08,867 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:58:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 22:58:08,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872418799] [2019-11-23 22:58:08,939 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-23 22:58:08,940 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:58:08,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:58:08,957 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:58:08,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:58:12,694 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2019-11-23 22:58:13,717 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2019-11-23 22:58:20,391 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2019-11-23 22:58:32,853 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 237 [2019-11-23 22:58:36,194 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 248 [2019-11-23 22:58:36,303 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 243 [2019-11-23 22:58:41,656 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 256 [2019-11-23 22:58:47,398 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 269 [2019-11-23 22:58:51,419 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 275 [2019-11-23 22:58:53,357 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 279 [2019-11-23 22:58:55,507 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 283 [2019-11-23 22:58:59,536 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 292 [2019-11-23 22:59:01,632 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 295 [2019-11-23 22:59:01,753 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 294 [2019-11-23 22:59:03,964 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2019-11-23 22:59:04,098 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 297 [2019-11-23 22:59:06,444 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 300 [2019-11-23 22:59:08,614 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2019-11-23 22:59:08,738 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 304 [2019-11-23 22:59:10,900 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2019-11-23 22:59:11,021 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 308 [2019-11-23 22:59:13,149 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 314 [2019-11-23 22:59:13,283 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 309 [2019-11-23 22:59:13,429 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-23 22:59:13,551 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 308 [2019-11-23 22:59:13,777 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 310 [2019-11-23 22:59:16,236 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2019-11-23 22:59:16,362 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 312 [2019-11-23 22:59:19,101 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 318 [2019-11-23 22:59:21,797 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-23 22:59:21,926 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 320 [2019-11-23 22:59:22,055 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-11-23 22:59:22,180 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 323 [2019-11-23 22:59:24,599 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2019-11-23 22:59:24,743 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-23 22:59:27,241 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 22:59:27,393 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 331 [2019-11-23 22:59:30,455 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2019-11-23 22:59:30,596 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 334 [2019-11-23 22:59:33,130 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 343 [2019-11-23 22:59:33,267 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 339 [2019-11-23 22:59:35,880 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 345 [2019-11-23 22:59:36,021 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 340 [2019-11-23 22:59:36,189 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2019-11-23 22:59:36,310 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343