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-f4eb214f-m [2019-10-13 22:58:10,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:58:10,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:58:10,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:58:10,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:58:10,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:58:10,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:58:10,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:58:10,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:58:10,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:58:10,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:58:10,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:58:10,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:58:10,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:58:10,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:58:10,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:58:10,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:58:10,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:58:10,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:58:10,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:58:10,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:58:10,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:58:10,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:58:10,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:58:10,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:58:10,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:58:10,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:58:10,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:58:10,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:58:10,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:58:10,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:58:10,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:58:10,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:58:10,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:58:10,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:58:10,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:58:10,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:58:10,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:58:10,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:58:10,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:58:10,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:58:10,739 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 22:58:10,773 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:58:10,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:58:10,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:58:10,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:58:10,777 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:58:10,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:58:10,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:58:10,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:58:10,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:58:10,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:58:10,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:58:10,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:58:10,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:58:10,780 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:58:10,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:58:10,780 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:58:10,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:58:10,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:58:10,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:58:10,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:58:10,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:58:10,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:58:10,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:58:10,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:58:10,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:58:10,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:58:10,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:58:10,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:58:10,783 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 22:58:11,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:58:11,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:58:11,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:58:11,095 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:58:11,095 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:58:11,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-10-13 22:58:11,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5abe251e/1cfc571320e34dca814f34ee029a3a5b/FLAGaa64bf6c1 [2019-10-13 22:58:11,638 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:58:11,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-10-13 22:58:11,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5abe251e/1cfc571320e34dca814f34ee029a3a5b/FLAGaa64bf6c1 [2019-10-13 22:58:11,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5abe251e/1cfc571320e34dca814f34ee029a3a5b [2019-10-13 22:58:11,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:58:11,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:58:11,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:11,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:58:11,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:58:11,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:11" (1/1) ... [2019-10-13 22:58:12,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67af7f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:11, skipping insertion in model container [2019-10-13 22:58:12,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:11" (1/1) ... [2019-10-13 22:58:12,007 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:58:12,048 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:58:12,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:12,422 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:58:12,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:12,503 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:58:12,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12 WrapperNode [2019-10-13 22:58:12,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:12,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:58:12,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:58:12,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:58:12,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (1/1) ... [2019-10-13 22:58:12,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:58:12,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:58:12,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:58:12,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:58:12,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (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 22:58:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:58:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:58:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:58:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:58:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-13 22:58:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 22:58:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:58:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:58:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:58:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:58:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:58:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:58:13,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:58:13,481 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:58:13,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:13 BoogieIcfgContainer [2019-10-13 22:58:13,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:58:13,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:58:13,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:58:13,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:58:13,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:58:11" (1/3) ... [2019-10-13 22:58:13,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bde7524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:13, skipping insertion in model container [2019-10-13 22:58:13,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:12" (2/3) ... [2019-10-13 22:58:13,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bde7524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:13, skipping insertion in model container [2019-10-13 22:58:13,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:13" (3/3) ... [2019-10-13 22:58:13,493 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2019-10-13 22:58:13,502 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:58:13,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:58:13,522 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:58:13,547 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:58:13,547 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:58:13,547 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:58:13,547 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:58:13,547 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:58:13,547 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:58:13,548 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:58:13,548 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:58:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-13 22:58:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 22:58:13,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:13,570 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:13,572 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -762795281, now seen corresponding path program 1 times [2019-10-13 22:58:13,585 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:13,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8710437] [2019-10-13 22:58:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:13,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:13,950 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 22:58:13,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8710437] [2019-10-13 22:58:13,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:13,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:58:13,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957377487] [2019-10-13 22:58:13,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:58:13,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:13,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:58:13,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:58:13,974 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-10-13 22:58:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:14,061 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-13 22:58:14,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:58:14,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-13 22:58:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:14,072 INFO L225 Difference]: With dead ends: 34 [2019-10-13 22:58:14,073 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 22:58:14,076 INFO L600 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 [2019-10-13 22:58:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 22:58:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-10-13 22:58:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 22:58:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-13 22:58:14,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2019-10-13 22:58:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:14,113 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-13 22:58:14,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:58:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-13 22:58:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 22:58:14,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:14,114 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:14,115 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1129057066, now seen corresponding path program 1 times [2019-10-13 22:58:14,115 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:14,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984174056] [2019-10-13 22:58:14,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:14,291 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 22:58:14,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984174056] [2019-10-13 22:58:14,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565932915] [2019-10-13 22:58:14,293 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 22:58:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:14,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 22:58:14,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:58:14,525 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:58:14,546 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 22:58:14,546 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:58:14,652 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 22:58:14,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905525523] [2019-10-13 22:58:14,686 INFO L162 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-10-13 22:58:14,686 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:58:14,691 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:58:14,697 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:58:14,698 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:58:15,162 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 106 for LOIs [2019-10-13 22:58:40,662 WARN L191 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 950