/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/product-lines/email_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:01:26,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:01:26,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:01:26,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:01:26,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:01:26,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:01:26,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:01:26,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:01:26,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:01:26,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:01:26,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:01:26,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:01:26,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:01:26,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:01:26,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:01:26,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:01:26,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:01:26,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:01:26,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:01:26,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:01:26,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:01:26,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:01:26,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:01:26,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:01:26,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:01:26,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:01:26,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:01:26,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:01:26,734 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 05:01:26,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:01:26,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:01:26,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:01:26,750 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:01:26,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:01:26,750 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:01:26,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:01:26,751 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:01:26,751 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:01:26,751 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:01:26,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:01:26,751 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:01:26,752 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:01:26,752 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:01:26,752 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:01:26,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:01:26,753 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:01:26,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:01:26,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:01:26,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:01:26,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:01:26,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:01:26,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:01:26,754 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:01:26,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:01:26,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:01:26,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:01:26,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:01:26,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:01:26,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:01:26,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:01:26,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:01:26,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:01:26,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:01:26,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:01:26,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:01:26,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:01:26,757 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:01:27,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:01:27,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:01:27,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:01:27,049 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:01:27,049 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:01:27,050 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-11-24 05:01:27,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2333229/2a305136483443768cbd0452a6aeefb8/FLAG581dff127 [2019-11-24 05:01:27,734 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:01:27,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-11-24 05:01:27,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2333229/2a305136483443768cbd0452a6aeefb8/FLAG581dff127 [2019-11-24 05:01:27,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2333229/2a305136483443768cbd0452a6aeefb8 [2019-11-24 05:01:27,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:01:27,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:01:27,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:01:27,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:01:27,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:01:27,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:01:27" (1/1) ... [2019-11-24 05:01:27,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bc90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:27, skipping insertion in model container [2019-11-24 05:01:27,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:01:27" (1/1) ... [2019-11-24 05:01:27,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:01:28,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:01:28,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:01:28,856 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:01:29,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:01:29,204 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:01:29,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29 WrapperNode [2019-11-24 05:01:29,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:01:29,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:01:29,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:01:29,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:01:29,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:01:29,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:01:29,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:01:29,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:01:29,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (1/1) ... [2019-11-24 05:01:29,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:01:29,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:01:29,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:01:29,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:01:29,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (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 05:01:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:01:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:01:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:01:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:01:29,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:01:39,889 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:01:39,890 INFO L284 CfgBuilder]: Removed 423 assume(true) statements. [2019-11-24 05:01:39,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:01:39 BoogieIcfgContainer [2019-11-24 05:01:39,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:01:39,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:01:39,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:01:39,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:01:39,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:01:27" (1/3) ... [2019-11-24 05:01:39,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a480f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:01:39, skipping insertion in model container [2019-11-24 05:01:39,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:01:29" (2/3) ... [2019-11-24 05:01:39,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a480f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:01:39, skipping insertion in model container [2019-11-24 05:01:39,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:01:39" (3/3) ... [2019-11-24 05:01:39,900 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2019-11-24 05:01:39,909 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:01:39,915 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-24 05:01:39,927 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-24 05:01:39,952 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:01:39,953 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:01:39,953 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:01:39,953 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:01:39,953 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:01:39,953 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:01:39,953 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:01:39,953 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:01:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-24 05:01:39,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:01:39,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:01:39,978 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:01:39,979 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:01:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:01:39,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1350498009, now seen corresponding path program 1 times [2019-11-24 05:01:39,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:01:39,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706529612] [2019-11-24 05:01:39,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:01:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:01:40,400 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 05:01:40,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706529612] [2019-11-24 05:01:40,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:01:40,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:01:40,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096382084] [2019-11-24 05:01:40,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:01:40,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:01:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:01:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:01:40,426 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-11-24 05:01:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:01:40,460 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2019-11-24 05:01:40,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:01:40,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:01:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:01:40,475 INFO L225 Difference]: With dead ends: 66 [2019-11-24 05:01:40,475 INFO L226 Difference]: Without dead ends: 43 [2019-11-24 05:01:40,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:01:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-24 05:01:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-24 05:01:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-24 05:01:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 66 transitions. [2019-11-24 05:01:40,532 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 66 transitions. Word has length 7 [2019-11-24 05:01:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:01:40,532 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 66 transitions. [2019-11-24 05:01:40,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:01:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2019-11-24 05:01:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:01:40,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:01:40,533 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:01:40,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:01:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:01:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1228363089, now seen corresponding path program 1 times [2019-11-24 05:01:40,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:01:40,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059941293] [2019-11-24 05:01:40,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:01:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:01:40,673 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 05:01:40,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059941293] [2019-11-24 05:01:40,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:01:40,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:01:40,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005449157] [2019-11-24 05:01:40,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:01:40,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:01:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:01:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:01:40,679 INFO L87 Difference]: Start difference. First operand 43 states and 66 transitions. Second operand 3 states. [2019-11-24 05:01:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:01:40,703 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2019-11-24 05:01:40,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:01:40,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:01:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:01:40,707 INFO L225 Difference]: With dead ends: 62 [2019-11-24 05:01:40,709 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:01:40,710 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 [2019-11-24 05:01:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:01:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-24 05:01:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-24 05:01:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 68 transitions. [2019-11-24 05:01:40,719 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 68 transitions. Word has length 8 [2019-11-24 05:01:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:01:40,719 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 68 transitions. [2019-11-24 05:01:40,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:01:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 68 transitions. [2019-11-24 05:01:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:01:40,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:01:40,723 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:01:40,723 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:01:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:01:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash -108897324, now seen corresponding path program 1 times [2019-11-24 05:01:40,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:01:40,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870853842] [2019-11-24 05:01:40,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:01:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:01:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:01:41,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870853842] [2019-11-24 05:01:41,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785274099] [2019-11-24 05:01:41,055 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 05:01:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:01:41,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:01:41,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:01:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:01:41,522 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:01:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:01:41,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [154430518] [2019-11-24 05:01:41,595 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 05:01:41,595 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:01:41,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:01:41,607 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:01:41,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs