/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/eca-rers2012/Problem01_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:33:51,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:33:51,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:33:51,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:33:51,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:33:51,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:33:51,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:33:51,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:33:51,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:33:51,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:33:51,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:33:51,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:33:51,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:33:51,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:33:51,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:33:51,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:33:51,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:33:51,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:33:51,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:33:51,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:33:51,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:33:51,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:33:51,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:33:51,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:33:51,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 01:33:51,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 01:33:51,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 01:33:51,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 01:33:51,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 01:33:51,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 01:33:51,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:33:51,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:33:51,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:33:51,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:33:51,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:33:51,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:33:51,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:33:51,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:33:51,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:33:51,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:33:51,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:33:51,592 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 01:33:51,621 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:33:51,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:33:51,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:33:51,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:33:51,624 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:33:51,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:33:51,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:33:51,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:33:51,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:33:51,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:33:51,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:33:51,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:33:51,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:33:51,626 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:33:51,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:33:51,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:33:51,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:33:51,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:33:51,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:33:51,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:33:51,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:33:51,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:33:51,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:33:51,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:33:51,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:33:51,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:33:51,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:33:51,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:33:51,631 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 01:33:51,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:33:51,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:33:51,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:33:51,984 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:33:51,984 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:33:51,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label04.c [2019-11-07 01:33:52,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f826563/58a6eecbe97f4cb0b734610e237086f5/FLAG95f1c3277 [2019-11-07 01:33:52,579 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:33:52,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label04.c [2019-11-07 01:33:52,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f826563/58a6eecbe97f4cb0b734610e237086f5/FLAG95f1c3277 [2019-11-07 01:33:52,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f826563/58a6eecbe97f4cb0b734610e237086f5 [2019-11-07 01:33:52,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:33:52,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:33:52,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:33:52,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:33:52,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:33:52,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:52" (1/1) ... [2019-11-07 01:33:52,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e9f379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:52, skipping insertion in model container [2019-11-07 01:33:52,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:52" (1/1) ... [2019-11-07 01:33:52,849 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:33:52,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:33:53,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:33:53,411 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:33:53,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:33:53,519 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:33:53,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53 WrapperNode [2019-11-07 01:33:53,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:33:53,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:33:53,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:33:53,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:33:53,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (1/1) ... [2019-11-07 01:33:53,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:33:53,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:33:53,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:33:53,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:33:53,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (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 01:33:53,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:33:53,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:33:53,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:33:53,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:33:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:33:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:33:55,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:33:55,909 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:33:55,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:55 BoogieIcfgContainer [2019-11-07 01:33:55,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:33:55,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:33:55,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:33:55,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:33:55,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:33:52" (1/3) ... [2019-11-07 01:33:55,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270bd604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:55, skipping insertion in model container [2019-11-07 01:33:55,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:53" (2/3) ... [2019-11-07 01:33:55,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270bd604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:55, skipping insertion in model container [2019-11-07 01:33:55,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:55" (3/3) ... [2019-11-07 01:33:55,920 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label04.c [2019-11-07 01:33:55,931 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:33:55,940 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:33:55,952 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:33:55,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:33:55,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:33:55,979 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:33:55,979 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:33:55,979 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:33:55,979 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:33:55,980 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:33:55,980 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:33:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-11-07 01:33:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-07 01:33:56,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:56,012 INFO L410 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, 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] [2019-11-07 01:33:56,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:56,020 INFO L82 PathProgramCache]: Analyzing trace with hash 826817380, now seen corresponding path program 1 times [2019-11-07 01:33:56,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:56,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189385753] [2019-11-07 01:33:56,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:56,498 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 01:33:56,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189385753] [2019-11-07 01:33:56,499 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:33:56,500 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:33:56,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238657310] [2019-11-07 01:33:56,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:33:56,508 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:33:56,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:33:56,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:33:56,526 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-11-07 01:33:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:33:57,034 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-11-07 01:33:57,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:33:57,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-11-07 01:33:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:33:57,062 INFO L225 Difference]: With dead ends: 246 [2019-11-07 01:33:57,062 INFO L226 Difference]: Without dead ends: 157 [2019-11-07 01:33:57,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:33:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-07 01:33:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-11-07 01:33:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-11-07 01:33:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 273 transitions. [2019-11-07 01:33:57,195 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 273 transitions. Word has length 77 [2019-11-07 01:33:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:33:57,197 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 273 transitions. [2019-11-07 01:33:57,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:33:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 273 transitions. [2019-11-07 01:33:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-07 01:33:57,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:57,206 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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] [2019-11-07 01:33:57,207 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1195669253, now seen corresponding path program 1 times [2019-11-07 01:33:57,208 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:57,208 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049981466] [2019-11-07 01:33:57,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:33:57,369 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049981466] [2019-11-07 01:33:57,369 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:33:57,369 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:33:57,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633850638] [2019-11-07 01:33:57,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:33:57,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:33:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:33:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:33:57,374 INFO L87 Difference]: Start difference. First operand 157 states and 273 transitions. Second operand 6 states. [2019-11-07 01:33:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:33:58,034 INFO L93 Difference]: Finished difference Result 479 states and 861 transitions. [2019-11-07 01:33:58,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:33:58,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-11-07 01:33:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:33:58,039 INFO L225 Difference]: With dead ends: 479 [2019-11-07 01:33:58,039 INFO L226 Difference]: Without dead ends: 327 [2019-11-07 01:33:58,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-07 01:33:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-11-07 01:33:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-11-07 01:33:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-07 01:33:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 543 transitions. [2019-11-07 01:33:58,071 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 543 transitions. Word has length 87 [2019-11-07 01:33:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:33:58,071 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 543 transitions. [2019-11-07 01:33:58,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:33:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 543 transitions. [2019-11-07 01:33:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-07 01:33:58,076 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:58,076 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:33:58,077 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash -498203924, now seen corresponding path program 1 times [2019-11-07 01:33:58,077 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:58,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968595243] [2019-11-07 01:33:58,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:33:58,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968595243] [2019-11-07 01:33:58,209 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702399462] [2019-11-07 01:33:58,210 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 01:33:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:58,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 01:33:58,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:33:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:33:58,435 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:33:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:33:58,536 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688742083] [2019-11-07 01:33:58,603 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-11-07 01:33:58,604 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:33:58,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:33:58,629 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:33:58,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:33:58,885 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-11-07 01:34:00,230 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 141 for LOIs [2019-11-07 01:34:00,465 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:34:00,594 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-07 01:34:00,923 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 149 [2019-11-07 01:34:01,127 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-11-07 01:34:01,394 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-11-07 01:34:01,581 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-11-07 01:34:01,783 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-11-07 01:34:01,984 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2019-11-07 01:34:02,240 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:02,409 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:02,874 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:02,999 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:03,248 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:03,384 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:03,562 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:03,668 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:04,113 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:04,219 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:04,413 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:04,546 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:04,853 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:05,123 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:05,254 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:05,405 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:05,543 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:05,747 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:05,856 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:06,713 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:06,903 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-07 01:34:07,180 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 148 [2019-11-07 01:34:07,624 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:08,471 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:08,686 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:08,917 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:09,139 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:09,418 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-07 01:34:09,523 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-07 01:34:09,768 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2019-11-07 01:34:10,227 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2019-11-07 01:34:14,882 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-07 01:34:15,066 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-07 01:34:15,192 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-07 01:34:16,652 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2019-11-07 01:34:20,591 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 345432 conjuctions. This might take some time...