/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_spec11_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:52:03,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:52:03,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:52:03,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:52:03,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:52:03,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:52:03,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:52:03,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:52:03,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:52:03,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:52:03,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:52:03,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:52:03,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:52:03,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:52:03,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:52:03,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:52:03,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:52:03,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:52:03,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:52:03,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:52:03,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:52:03,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:52:03,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:52:03,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:52:03,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:52:03,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:52:03,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:52:03,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:52:03,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:52:03,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:52:03,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:52:03,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:52:03,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:52:03,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:52:03,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:52:03,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:52:03,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:52:03,806 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:52:03,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:52:03,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:52:03,808 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:52:03,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:52:03,809 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:52:03,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:52:03,809 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:52:03,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:52:03,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:52:03,811 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:52:03,811 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:52:03,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:52:03,812 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:52:03,812 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:52:03,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:52:03,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:52:03,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:52:03,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:52:03,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:52:03,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:52:03,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:52:03,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:52:03,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:52:03,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:52:03,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:52:03,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:52:03,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:52:03,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:52:03,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:52:03,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:52:03,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:52:03,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:52:03,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:52:03,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:52:03,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:52:03,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:52:03,819 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:52:04,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:52:04,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:52:04,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:52:04,116 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:52:04,117 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:52:04,117 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2019-11-24 04:52:04,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101d02ae4/4d35a332ecc64e58982c3dca02c14068/FLAGa6612601c [2019-11-24 04:52:04,820 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:52:04,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2019-11-24 04:52:04,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101d02ae4/4d35a332ecc64e58982c3dca02c14068/FLAGa6612601c [2019-11-24 04:52:05,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101d02ae4/4d35a332ecc64e58982c3dca02c14068 [2019-11-24 04:52:05,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:52:05,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:52:05,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:52:05,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:52:05,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:52:05,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:52:05" (1/1) ... [2019-11-24 04:52:05,038 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 04:52:05, skipping insertion in model container [2019-11-24 04:52:05,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:52:05" (1/1) ... [2019-11-24 04:52:05,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:52:05,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:52:05,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:52:05,931 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:52:06,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:52:06,180 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:52:06,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06 WrapperNode [2019-11-24 04:52:06,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:52:06,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:52:06,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:52:06,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:52:06,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:52:06,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:52:06,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:52:06,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:52:06,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... [2019-11-24 04:52:06,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:52:06,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:52:06,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:52:06,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:52:06,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:52:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:52:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:52:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:52:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:52:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:52:17,691 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:52:17,691 INFO L284 CfgBuilder]: Removed 407 assume(true) statements. [2019-11-24 04:52:17,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:52:17 BoogieIcfgContainer [2019-11-24 04:52:17,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:52:17,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:52:17,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:52:17,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:52:17,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:52:05" (1/3) ... [2019-11-24 04:52:17,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3322fcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:52:17, skipping insertion in model container [2019-11-24 04:52:17,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:52:06" (2/3) ... [2019-11-24 04:52:17,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3322fcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:52:17, skipping insertion in model container [2019-11-24 04:52:17,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:52:17" (3/3) ... [2019-11-24 04:52:17,700 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2019-11-24 04:52:17,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:52:17,716 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-24 04:52:17,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-24 04:52:17,751 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:52:17,752 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:52:17,752 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:52:17,752 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:52:17,752 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:52:17,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:52:17,752 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:52:17,753 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:52:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-24 04:52:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:52:17,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:17,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:17,782 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:52:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:17,789 INFO L82 PathProgramCache]: Analyzing trace with hash 814162895, now seen corresponding path program 1 times [2019-11-24 04:52:17,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:17,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204497410] [2019-11-24 04:52:17,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:52:18,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204497410] [2019-11-24 04:52:18,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:52:18,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:52:18,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030226485] [2019-11-24 04:52:18,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:52:18,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:52:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:52:18,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:52:18,190 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-11-24 04:52:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:52:18,219 INFO L93 Difference]: Finished difference Result 58 states and 91 transitions. [2019-11-24 04:52:18,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:52:18,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:52:18,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:52:18,234 INFO L225 Difference]: With dead ends: 58 [2019-11-24 04:52:18,234 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:52:18,239 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 04:52:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:52:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:52:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:52:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2019-11-24 04:52:18,291 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 7 [2019-11-24 04:52:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:52:18,292 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-24 04:52:18,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:52:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2019-11-24 04:52:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:52:18,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:18,294 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:18,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:52:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash 134296253, now seen corresponding path program 1 times [2019-11-24 04:52:18,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:18,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794484619] [2019-11-24 04:52:18,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:52:18,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794484619] [2019-11-24 04:52:18,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:52:18,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:52:18,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128813756] [2019-11-24 04:52:18,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:52:18,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:52:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:52:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:52:18,533 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 3 states. [2019-11-24 04:52:18,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:52:18,551 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2019-11-24 04:52:18,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:52:18,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:52:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:52:18,554 INFO L225 Difference]: With dead ends: 52 [2019-11-24 04:52:18,554 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 04:52:18,555 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 04:52:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 04:52:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 04:52:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:52:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-11-24 04:52:18,565 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 63 transitions. Word has length 8 [2019-11-24 04:52:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:52:18,566 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-11-24 04:52:18,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:52:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 63 transitions. [2019-11-24 04:52:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:52:18,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:52:18,567 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:52:18,567 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:52:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:52:18,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2131034190, now seen corresponding path program 1 times [2019-11-24 04:52:18,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:52:18,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917665127] [2019-11-24 04:52:18,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:52:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:19,001 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 04:52:19,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917665127] [2019-11-24 04:52:19,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534289861] [2019-11-24 04:52:19,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:52:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:52:19,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:52:19,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:52:19,540 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 04:52:19,541 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:52:19,572 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 04:52:19,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1448165034] [2019-11-24 04:52:19,600 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 04:52:19,600 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:52:19,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:52:19,614 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:52:19,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:53:22,168 WARN L192 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 04:53:26,958 WARN L192 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 316 DAG size of output: 257 [2019-11-24 04:53:27,328 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 739 [2019-11-24 04:53:27,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8