/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:00:00,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:00:00,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:00:00,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:00:00,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:00:00,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:00:00,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:00:00,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:00:00,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:00:00,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:00:00,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:00:00,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:00:00,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:00:00,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:00:00,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:00:00,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:00:00,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:00:00,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:00:00,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:00:00,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:00:00,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:00:00,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:00:00,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:00:00,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:00:00,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:00:00,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:00:00,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:00:00,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:00:00,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:00:00,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:00:00,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:00:00,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:00:00,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:00:00,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:00:00,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:00:00,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:00:00,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:00:00,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:00:00,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:00:00,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:00:00,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:00:00,911 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:00:00,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:00:00,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:00:00,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:00:00,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:00:00,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:00:00,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:00:00,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:00:00,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:00:00,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:00:00,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:00:00,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:00:00,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:00:00,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:00:00,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:00:00,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:00:00,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:00:00,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:00:00,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:00:00,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:00:01,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:00:01,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:00:01,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:00:01,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:00:01,208 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:00:01,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-11-07 04:00:01,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90cce4c/ffdab11009294408976383d049bccf7c/FLAGcab5c535c [2019-11-07 04:00:01,782 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:00:01,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-11-07 04:00:01,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90cce4c/ffdab11009294408976383d049bccf7c/FLAGcab5c535c [2019-11-07 04:00:02,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f90cce4c/ffdab11009294408976383d049bccf7c [2019-11-07 04:00:02,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:00:02,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:00:02,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:02,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:00:02,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:00:02,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8ae619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02, skipping insertion in model container [2019-11-07 04:00:02,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:00:02,162 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:00:02,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:02,602 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:00:02,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:02,686 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:00:02,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02 WrapperNode [2019-11-07 04:00:02,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:02,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:00:02,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:00:02,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:00:02,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (1/1) ... [2019-11-07 04:00:02,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:00:02,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:00:02,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:00:02,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:00:02,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (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 [2019-11-07 04:00:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:00:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:00:02,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:00:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:00:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-11-07 04:00:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-07 04:00:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:00:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:00:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:00:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:00:02,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:00:03,581 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:00:03,581 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:00:03,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:03 BoogieIcfgContainer [2019-11-07 04:00:03,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:00:03,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:00:03,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:00:03,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:00:03,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:00:02" (1/3) ... [2019-11-07 04:00:03,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7970d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:03, skipping insertion in model container [2019-11-07 04:00:03,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:02" (2/3) ... [2019-11-07 04:00:03,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7970d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:03, skipping insertion in model container [2019-11-07 04:00:03,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:03" (3/3) ... [2019-11-07 04:00:03,591 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2019-11-07 04:00:03,600 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:00:03,609 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:00:03,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:00:03,649 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:00:03,650 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:00:03,650 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:00:03,650 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:00:03,650 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:00:03,651 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:00:03,651 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:00:03,651 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:00:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-07 04:00:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:00:03,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:03,677 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:03,680 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash -762795281, now seen corresponding path program 1 times [2019-11-07 04:00:03,693 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:03,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296361675] [2019-11-07 04:00:03,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:04,088 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296361675] [2019-11-07 04:00:04,089 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:04,089 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:00:04,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666809084] [2019-11-07 04:00:04,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:00:04,095 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:04,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:00:04,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:00:04,109 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-11-07 04:00:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:04,232 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-07 04:00:04,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:00:04,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:00:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:04,245 INFO L225 Difference]: With dead ends: 34 [2019-11-07 04:00:04,245 INFO L226 Difference]: Without dead ends: 18 [2019-11-07 04:00:04,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:00:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-07 04:00:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-07 04:00:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 04:00:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-07 04:00:04,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-11-07 04:00:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:04,293 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-07 04:00:04,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:00:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-07 04:00:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 04:00:04,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:04,294 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:04,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:04,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1129057066, now seen corresponding path program 1 times [2019-11-07 04:00:04,295 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:04,295 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096081944] [2019-11-07 04:00:04,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:04,511 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096081944] [2019-11-07 04:00:04,512 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936293103] [2019-11-07 04:00:04,512 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 [2019-11-07 04:00:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:04,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 04:00:04,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:00:04,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:04,743 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:00:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:04,839 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115780251] [2019-11-07 04:00:04,864 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-07 04:00:04,864 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:00:04,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:00:04,877 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:00:04,877 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:00:05,201 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 106 for LOIs [2019-11-07 04:00:29,825 WARN L191 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 950