/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_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:03:12,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:03:12,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:03:12,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:03:12,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:03:12,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:03:12,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:03:12,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:03:12,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:03:12,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:03:12,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:03:12,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:03:12,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:03:12,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:03:12,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:03:12,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:03:12,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:03:12,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:03:12,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:03:12,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:03:12,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:03:12,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:03:12,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:03:12,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:03:12,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:03:12,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:03:12,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:03:12,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:03:12,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:03:12,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:03:12,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:03:12,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:03:12,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:03:12,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:03:12,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:03:12,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:03:12,619 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 05:03:12,635 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:03:12,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:03:12,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:03:12,636 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:03:12,636 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:03:12,637 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:03:12,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:03:12,637 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:03:12,637 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:03:12,637 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:03:12,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:03:12,638 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:03:12,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:03:12,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:03:12,638 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:03:12,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:03:12,639 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:03:12,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:03:12,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:03:12,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:03:12,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:03:12,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:03:12,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:03:12,641 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:03:12,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:03:12,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:03:12,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:03:12,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:03:12,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:03:12,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:03:12,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:03:12,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:03:12,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:03:12,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:03:12,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:03:12,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:03:12,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:03:12,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:03:12,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:03:12,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:03:12,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:03:12,992 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:03:12,992 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:03:12,992 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-11-24 05:03:13,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df30cc443/0cd11918073d4e8abc36ba3a7cd196c0/FLAGaabd2ef08 [2019-11-24 05:03:13,681 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:03:13,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-11-24 05:03:13,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df30cc443/0cd11918073d4e8abc36ba3a7cd196c0/FLAGaabd2ef08 [2019-11-24 05:03:13,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df30cc443/0cd11918073d4e8abc36ba3a7cd196c0 [2019-11-24 05:03:13,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:03:13,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:03:13,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:13,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:03:13,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:03:13,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:13" (1/1) ... [2019-11-24 05:03:13,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35aafeea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:13, skipping insertion in model container [2019-11-24 05:03:13,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:13" (1/1) ... [2019-11-24 05:03:13,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:03:14,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:03:14,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:14,948 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:03:15,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:15,177 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:03:15,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15 WrapperNode [2019-11-24 05:03:15,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:15,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:15,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:03:15,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:03:15,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:15,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:03:15,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:03:15,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:03:15,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (1/1) ... [2019-11-24 05:03:15,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:03:15,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:03:15,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:03:15,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:03:15,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (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 05:03:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:03:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:03:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:03:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:03:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:03:22,994 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:03:22,994 INFO L284 CfgBuilder]: Removed 327 assume(true) statements. [2019-11-24 05:03:22,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:22 BoogieIcfgContainer [2019-11-24 05:03:22,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:03:22,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:03:22,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:03:23,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:03:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:03:13" (1/3) ... [2019-11-24 05:03:23,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522c864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:23, skipping insertion in model container [2019-11-24 05:03:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:15" (2/3) ... [2019-11-24 05:03:23,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522c864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:23, skipping insertion in model container [2019-11-24 05:03:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:22" (3/3) ... [2019-11-24 05:03:23,005 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product24.cil.c [2019-11-24 05:03:23,014 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:03:23,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 05:03:23,033 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 05:03:23,058 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:03:23,058 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:03:23,058 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:03:23,058 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:03:23,059 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:03:23,059 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:03:23,059 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:03:23,059 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:03:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-24 05:03:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:03:23,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:23,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:23,082 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash -560609117, now seen corresponding path program 1 times [2019-11-24 05:03:23,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:23,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660824803] [2019-11-24 05:03:23,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:23,472 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 05:03:23,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660824803] [2019-11-24 05:03:23,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:23,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:03:23,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256686272] [2019-11-24 05:03:23,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:03:23,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:23,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:03:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:03:23,498 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-11-24 05:03:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:23,521 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2019-11-24 05:03:23,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:03:23,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:03:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:23,534 INFO L225 Difference]: With dead ends: 54 [2019-11-24 05:03:23,534 INFO L226 Difference]: Without dead ends: 37 [2019-11-24 05:03:23,538 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 05:03:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-24 05:03:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-24 05:03:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:03:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 05:03:23,580 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 7 [2019-11-24 05:03:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:23,580 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 05:03:23,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:03:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 05:03:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:03:23,581 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:23,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:23,582 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:23,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1168470238, now seen corresponding path program 1 times [2019-11-24 05:03:23,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:23,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835492608] [2019-11-24 05:03:23,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:23,750 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 05:03:23,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835492608] [2019-11-24 05:03:23,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:23,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:23,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304778189] [2019-11-24 05:03:23,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:23,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:23,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:23,755 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 3 states. [2019-11-24 05:03:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:23,780 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-11-24 05:03:23,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:23,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:03:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:23,783 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:03:23,783 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 05:03:23,784 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 05:03:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 05:03:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-24 05:03:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-24 05:03:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2019-11-24 05:03:23,800 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 62 transitions. Word has length 8 [2019-11-24 05:03:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:23,801 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 62 transitions. [2019-11-24 05:03:23,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 62 transitions. [2019-11-24 05:03:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:03:23,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:23,804 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:23,804 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -214103968, now seen corresponding path program 1 times [2019-11-24 05:03:23,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:23,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230682114] [2019-11-24 05:03:23,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:24,038 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 05:03:24,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230682114] [2019-11-24 05:03:24,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:24,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:03:24,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270445417] [2019-11-24 05:03:24,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:03:24,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:24,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:03:24,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:03:24,046 INFO L87 Difference]: Start difference. First operand 39 states and 62 transitions. Second operand 6 states. [2019-11-24 05:03:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:24,353 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2019-11-24 05:03:24,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:03:24,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-24 05:03:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:24,356 INFO L225 Difference]: With dead ends: 41 [2019-11-24 05:03:24,356 INFO L226 Difference]: Without dead ends: 39 [2019-11-24 05:03:24,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:03:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-24 05:03:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-11-24 05:03:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 05:03:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 60 transitions. [2019-11-24 05:03:24,364 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 60 transitions. Word has length 12 [2019-11-24 05:03:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:24,364 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 60 transitions. [2019-11-24 05:03:24,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:03:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2019-11-24 05:03:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:03:24,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:24,366 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:24,367 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash -600870361, now seen corresponding path program 1 times [2019-11-24 05:03:24,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:24,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803194304] [2019-11-24 05:03:24,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:24,843 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 05:03:24,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803194304] [2019-11-24 05:03:24,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:24,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-24 05:03:24,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593188188] [2019-11-24 05:03:24,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-24 05:03:24,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-24 05:03:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:03:24,846 INFO L87 Difference]: Start difference. First operand 37 states and 60 transitions. Second operand 9 states. [2019-11-24 05:03:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:25,471 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2019-11-24 05:03:25,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-24 05:03:25,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-11-24 05:03:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:25,473 INFO L225 Difference]: With dead ends: 73 [2019-11-24 05:03:25,474 INFO L226 Difference]: Without dead ends: 67 [2019-11-24 05:03:25,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:03:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-24 05:03:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2019-11-24 05:03:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-24 05:03:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2019-11-24 05:03:25,487 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 15 [2019-11-24 05:03:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:25,488 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2019-11-24 05:03:25,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-24 05:03:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2019-11-24 05:03:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:03:25,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:25,489 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:25,489 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:25,490 INFO L82 PathProgramCache]: Analyzing trace with hash -435569205, now seen corresponding path program 1 times [2019-11-24 05:03:25,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:25,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525550660] [2019-11-24 05:03:25,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:25,914 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 05:03:25,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525550660] [2019-11-24 05:03:25,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114812408] [2019-11-24 05:03:25,916 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 05:03:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:26,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:03:26,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:03:26,351 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 05:03:26,352 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:03:26,372 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 05:03:26,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [854155492] [2019-11-24 05:03:26,416 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-24 05:03:26,416 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:03:26,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:03:26,432 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:03:26,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:04:09,315 WARN L192 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 676 [2019-11-24 05:04:12,716 WARN L192 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 281 DAG size of output: 229 [2019-11-24 05:04:13,163 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 709 [2019-11-24 05:04:13,493 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8