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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:58:11,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:58:11,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:58:11,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:58:11,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:58:11,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:58:11,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:58:11,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:58:11,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:58:11,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:58:11,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:58:11,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:58:11,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:58:11,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:58:11,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:58:11,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:58:11,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:58:11,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:58:11,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:58:11,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:58:11,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:58:11,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:58:11,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:58:11,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:58:11,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:58:11,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:58:11,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:58:11,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:58:11,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:58:11,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:58:11,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:58:11,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:58:11,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:58:11,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:58:11,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:58:11,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:58:11,134 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 [2019-10-13 22:58:11,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:58:11,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:58:11,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:58:11,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:58:11,156 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:58:11,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:58:11,156 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:58:11,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:58:11,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:58:11,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:58:11,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:58:11,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:58:11,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:58:11,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:58:11,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:58:11,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:58:11,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:58:11,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:58:11,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:58:11,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:58:11,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:58:11,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:58:11,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:58:11,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:58:11,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:58:11,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:58:11,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:58:11,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:58:11,162 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 [2019-10-13 22:58:11,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:58:11,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:58:11,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:58:11,486 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:58:11,486 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:58:11,487 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-13 22:58:11,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada613ef3/2b34a0df46df4e8493f3aec2d2eda173/FLAG5de26934f [2019-10-13 22:58:12,127 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:58:12,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-13 22:58:12,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada613ef3/2b34a0df46df4e8493f3aec2d2eda173/FLAG5de26934f [2019-10-13 22:58:12,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada613ef3/2b34a0df46df4e8493f3aec2d2eda173 [2019-10-13 22:58:12,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:58:12,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:58:12,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:12,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:58:12,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:58:12,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297c3183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12, skipping insertion in model container [2019-10-13 22:58:12,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:58:12,531 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:58:12,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:12,999 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:58:13,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:13,131 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:58:13,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13 WrapperNode [2019-10-13 22:58:13,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:13,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:58:13,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:58:13,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:58:13,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:58:13,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:58:13,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:58:13,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:58:13,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (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 [2019-10-13 22:58:13,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:58:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:58:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:58:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:58:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-13 22:58:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 22:58:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:58:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:58:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:58:13,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:58:13,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:58:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:58:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:58:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:58:13,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:58:13,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:58:13,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:58:14,455 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:58:14,456 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:58:14,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:14 BoogieIcfgContainer [2019-10-13 22:58:14,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:58:14,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:58:14,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:58:14,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:58:14,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:58:12" (1/3) ... [2019-10-13 22:58:14,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca4bbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:14, skipping insertion in model container [2019-10-13 22:58:14,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (2/3) ... [2019-10-13 22:58:14,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca4bbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:14, skipping insertion in model container [2019-10-13 22:58:14,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:14" (3/3) ... [2019-10-13 22:58:14,466 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-10-13 22:58:14,476 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:58:14,485 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:58:14,497 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:58:14,523 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:58:14,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:58:14,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:58:14,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:58:14,524 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:58:14,524 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:58:14,524 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:58:14,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:58:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-10-13 22:58:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 22:58:14,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:14,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:14,555 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash -983092727, now seen corresponding path program 1 times [2019-10-13 22:58:14,570 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:14,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272223520] [2019-10-13 22:58:14,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:58:15,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272223520] [2019-10-13 22:58:15,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:15,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 22:58:15,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607187905] [2019-10-13 22:58:15,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 22:58:15,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 22:58:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-13 22:58:15,959 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 19 states. [2019-10-13 22:58:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:16,939 INFO L93 Difference]: Finished difference Result 91 states and 135 transitions. [2019-10-13 22:58:16,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 22:58:16,942 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2019-10-13 22:58:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:16,954 INFO L225 Difference]: With dead ends: 91 [2019-10-13 22:58:16,954 INFO L226 Difference]: Without dead ends: 56 [2019-10-13 22:58:16,958 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-13 22:58:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-13 22:58:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-10-13 22:58:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-13 22:58:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2019-10-13 22:58:17,008 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 47 [2019-10-13 22:58:17,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:17,009 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2019-10-13 22:58:17,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 22:58:17,009 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2019-10-13 22:58:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 22:58:17,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:17,011 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:17,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:17,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:17,012 INFO L82 PathProgramCache]: Analyzing trace with hash -187787640, now seen corresponding path program 1 times [2019-10-13 22:58:17,012 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:17,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922696916] [2019-10-13 22:58:17,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:17,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:17,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:58:17,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922696916] [2019-10-13 22:58:17,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821750138] [2019-10-13 22:58:17,625 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 [2019-10-13 22:58:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:17,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 22:58:17,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:58:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:58:17,961 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:58:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:58:18,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912698769] [2019-10-13 22:58:18,940 INFO L162 IcfgInterpreter]: Started Sifa with 50 locations of interest [2019-10-13 22:58:18,940 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:58:18,947 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:58:18,954 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:58:18,955 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:58:21,300 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 275 DAG size of output: 221 [2019-10-13 22:58:21,667 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 22:58:21,781 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 22:58:21,934 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 22:58:22,246 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 316 [2019-10-13 22:58:22,696 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 326 for LOIs [2019-10-13 22:58:23,104 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 341