/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_spec6_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:05:36,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:05:36,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:05:36,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:05:36,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:05:36,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:05:36,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:05:36,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:05:36,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:05:36,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:05:36,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:05:36,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:05:36,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:05:36,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:05:36,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:05:36,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:05:36,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:05:36,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:05:36,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:05:36,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:05:36,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:05:36,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:05:36,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:05:36,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:05:36,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:05:36,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:05:36,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:05:36,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:05:36,859 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 05:05:36,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:05:36,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:05:36,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:05:36,874 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:05:36,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:05:36,875 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:05:36,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:05:36,875 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:05:36,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:05:36,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:05:36,876 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:05:36,876 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:05:36,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:05:36,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:05:36,877 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:05:36,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:05:36,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:05:36,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:05:36,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:05:36,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:05:36,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:05:36,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:05:36,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:05:36,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:05:36,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:05:36,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:05:36,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:05:36,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:05:36,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:05:36,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:05:36,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:05:36,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:05:36,882 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:05:37,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:05:37,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:05:37,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:05:37,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:05:37,174 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:05:37,174 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product14.cil.c [2019-11-24 05:05:37,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f931a44/ead2b0d0f84e4af9ae03056f344931dd/FLAGeef8b7958 [2019-11-24 05:05:37,883 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:05:37,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product14.cil.c [2019-11-24 05:05:37,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f931a44/ead2b0d0f84e4af9ae03056f344931dd/FLAGeef8b7958 [2019-11-24 05:05:38,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f931a44/ead2b0d0f84e4af9ae03056f344931dd [2019-11-24 05:05:38,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:05:38,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:05:38,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:05:38,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:05:38,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:05:38,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:05:38" (1/1) ... [2019-11-24 05:05:38,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa637bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:38, skipping insertion in model container [2019-11-24 05:05:38,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:05:38" (1/1) ... [2019-11-24 05:05:38,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:05:38,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:05:38,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:05:39,013 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:05:39,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:05:39,279 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:05:39,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39 WrapperNode [2019-11-24 05:05:39,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:05:39,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:05:39,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:05:39,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:05:39,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:05:39,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:05:39,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:05:39,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:05:39,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (1/1) ... [2019-11-24 05:05:39,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:05:39,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:05:39,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:05:39,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:05:39,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (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 05:05:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:05:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:05:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:05:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:05:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:05:51,913 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:05:51,915 INFO L284 CfgBuilder]: Removed 489 assume(true) statements. [2019-11-24 05:05:51,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:05:51 BoogieIcfgContainer [2019-11-24 05:05:51,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:05:51,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:05:51,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:05:51,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:05:51,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:05:38" (1/3) ... [2019-11-24 05:05:51,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:05:51, skipping insertion in model container [2019-11-24 05:05:51,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:05:39" (2/3) ... [2019-11-24 05:05:51,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2466354c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:05:51, skipping insertion in model container [2019-11-24 05:05:51,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:05:51" (3/3) ... [2019-11-24 05:05:51,941 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product14.cil.c [2019-11-24 05:05:51,957 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:05:51,968 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:05:51,981 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:05:52,029 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:05:52,030 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:05:52,030 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:05:52,030 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:05:52,030 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:05:52,031 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:05:52,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:05:52,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:05:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:05:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:05:52,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:52,075 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:52,076 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:52,086 INFO L82 PathProgramCache]: Analyzing trace with hash 256281532, now seen corresponding path program 1 times [2019-11-24 05:05:52,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:52,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355665090] [2019-11-24 05:05:52,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:52,578 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 05:05:52,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355665090] [2019-11-24 05:05:52,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:52,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:05:52,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555633005] [2019-11-24 05:05:52,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:05:52,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:05:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:05:52,605 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:05:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:52,645 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:05:52,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:05:52,647 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:05:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:52,662 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:05:52,662 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:05:52,667 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 05:05:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:05:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:05:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:05:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:05:52,716 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:05:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:52,716 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:05:52,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:05:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:05:52,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:05:52,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:52,718 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:52,718 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:52,719 INFO L82 PathProgramCache]: Analyzing trace with hash 471231929, now seen corresponding path program 1 times [2019-11-24 05:05:52,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:52,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161520042] [2019-11-24 05:05:52,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:52,845 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 05:05:52,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161520042] [2019-11-24 05:05:52,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:52,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:05:52,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317560733] [2019-11-24 05:05:52,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:05:52,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:52,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:05:52,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:05:52,849 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:05:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:52,873 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:05:52,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:05:52,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:05:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:52,877 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:05:52,877 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:05:52,879 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 05:05:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:05:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:05:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:05:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:05:52,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:05:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:52,901 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:05:52,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:05:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:05:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:05:52,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:52,904 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:52,904 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1831621071, now seen corresponding path program 1 times [2019-11-24 05:05:52,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:52,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636119157] [2019-11-24 05:05:52,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:05:53,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636119157] [2019-11-24 05:05:53,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:05:53,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:05:53,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612663007] [2019-11-24 05:05:53,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:05:53,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:05:53,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:05:53,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:05:53,264 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 05:05:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:05:53,487 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 05:05:53,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:05:53,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:05:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:05:53,489 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:05:53,489 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 05:05:53,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:05:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 05:05:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 05:05:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 05:05:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 05:05:53,503 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 05:05:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:05:53,503 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 05:05:53,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:05:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 05:05:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:05:53,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:05:53,504 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:05:53,505 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:05:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:05:53,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1833743128, now seen corresponding path program 1 times [2019-11-24 05:05:53,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:05:53,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732023948] [2019-11-24 05:05:53,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:05:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:53,686 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 05:05:53,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732023948] [2019-11-24 05:05:53,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044738912] [2019-11-24 05:05:53,687 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 05:05:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:05:54,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:05:54,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:05:54,044 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 05:05:54,044 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:05:54,065 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 05:05:54,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [97021218] [2019-11-24 05:05:54,094 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 05:05:54,095 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:05:54,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:05:54,109 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:05:54,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:06:52,718 WARN L192 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 701 [2019-11-24 05:06:56,730 WARN L192 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 321 DAG size of output: 261 [2019-11-24 05:06:57,107 WARN L192 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 744 [2019-11-24 05:06:57,421 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8