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/Problem15_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:55:16,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:55:16,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:55:16,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:55:16,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:55:16,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:55:16,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:55:16,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:55:16,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:55:16,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:55:16,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:55:16,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:55:16,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:55:16,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:55:16,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:55:16,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:55:16,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:55:16,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:55:16,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:55:16,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:55:16,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:55:16,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:55:16,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:55:16,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:55:16,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:55:16,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:55:16,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:55:16,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:55:16,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:55:16,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:55:16,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:55:16,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:55:16,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:55:16,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:55:16,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:55:16,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:55:16,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:55:16,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:55:16,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:55:16,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:55:16,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:55:16,465 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 [2019-10-15 01:55:16,486 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:55:16,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:55:16,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:55:16,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:55:16,488 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:55:16,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:55:16,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:55:16,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:55:16,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:55:16,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:55:16,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:55:16,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:55:16,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:55:16,490 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:55:16,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:55:16,491 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:55:16,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:55:16,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:55:16,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:55:16,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:55:16,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:55:16,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:55:16,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:55:16,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:55:16,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:55:16,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:55:16,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:55:16,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:55:16,493 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 [2019-10-15 01:55:16,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:55:16,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:55:16,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:55:16,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:55:16,836 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:55:16,837 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2019-10-15 01:55:16,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/209fa36fb/0b6cf55e89ef41eeb5a4c55852f1008a/FLAGa6dfd75d3 [2019-10-15 01:55:17,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:55:17,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label56.c [2019-10-15 01:55:17,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/209fa36fb/0b6cf55e89ef41eeb5a4c55852f1008a/FLAGa6dfd75d3 [2019-10-15 01:55:17,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/209fa36fb/0b6cf55e89ef41eeb5a4c55852f1008a [2019-10-15 01:55:17,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:55:17,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:55:17,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:55:17,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:55:17,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:55:17,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:55:17" (1/1) ... [2019-10-15 01:55:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3058475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:17, skipping insertion in model container [2019-10-15 01:55:17,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:55:17" (1/1) ... [2019-10-15 01:55:17,781 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:55:17,855 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:55:18,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:55:18,754 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:55:19,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:55:19,219 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:55:19,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19 WrapperNode [2019-10-15 01:55:19,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:55:19,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:55:19,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:55:19,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:55:19,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (1/1) ... [2019-10-15 01:55:19,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:55:19,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:55:19,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:55:19,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:55:19,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (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 [2019-10-15 01:55:19,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:55:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:55:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:55:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:55:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:55:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:55:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:55:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:55:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:55:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:55:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:55:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:55:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:55:28,008 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:55:28,008 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:55:28,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:55:28 BoogieIcfgContainer [2019-10-15 01:55:28,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:55:28,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:55:28,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:55:28,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:55:28,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:55:17" (1/3) ... [2019-10-15 01:55:28,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67250098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:55:28, skipping insertion in model container [2019-10-15 01:55:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:55:19" (2/3) ... [2019-10-15 01:55:28,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67250098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:55:28, skipping insertion in model container [2019-10-15 01:55:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:55:28" (3/3) ... [2019-10-15 01:55:28,018 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2019-10-15 01:55:28,028 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:55:28,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:55:28,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:55:28,078 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:55:28,079 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:55:28,079 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:55:28,079 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:55:28,079 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:55:28,079 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:55:28,080 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:55:28,080 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:55:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-15 01:55:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:55:28,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:55:28,114 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:55:28,116 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:55:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:55:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 648047725, now seen corresponding path program 1 times [2019-10-15 01:55:28,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:55:28,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906743679] [2019-10-15 01:55:28,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:28,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:28,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:55:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:55:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:55:28,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906743679] [2019-10-15 01:55:28,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:55:28,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:55:28,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928517570] [2019-10-15 01:55:28,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:55:28,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:55:28,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:55:28,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:55:28,390 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-15 01:55:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:55:32,404 INFO L93 Difference]: Finished difference Result 953 states and 1850 transitions. [2019-10-15 01:55:32,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:55:32,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 01:55:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:55:32,430 INFO L225 Difference]: With dead ends: 953 [2019-10-15 01:55:32,430 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:55:32,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:55:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:55:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 469. [2019-10-15 01:55:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-15 01:55:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 744 transitions. [2019-10-15 01:55:32,528 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 744 transitions. Word has length 11 [2019-10-15 01:55:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:55:32,529 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 744 transitions. [2019-10-15 01:55:32,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:55:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 744 transitions. [2019-10-15 01:55:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 01:55:32,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:55:32,532 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:55:32,532 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:55:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:55:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash -954494715, now seen corresponding path program 1 times [2019-10-15 01:55:32,533 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:55:32,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110492234] [2019-10-15 01:55:32,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:32,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:32,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:55:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:55:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:55:32,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110492234] [2019-10-15 01:55:32,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:55:32,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:55:32,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692077135] [2019-10-15 01:55:32,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:55:32,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:55:32,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:55:32,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:55:32,712 INFO L87 Difference]: Start difference. First operand 469 states and 744 transitions. Second operand 4 states. [2019-10-15 01:55:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:55:37,123 INFO L93 Difference]: Finished difference Result 1855 states and 2982 transitions. [2019-10-15 01:55:37,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:55:37,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-15 01:55:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:55:37,134 INFO L225 Difference]: With dead ends: 1855 [2019-10-15 01:55:37,134 INFO L226 Difference]: Without dead ends: 1391 [2019-10-15 01:55:37,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:55:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2019-10-15 01:55:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1376. [2019-10-15 01:55:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-15 01:55:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1950 transitions. [2019-10-15 01:55:37,202 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1950 transitions. Word has length 21 [2019-10-15 01:55:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:55:37,203 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 1950 transitions. [2019-10-15 01:55:37,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:55:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1950 transitions. [2019-10-15 01:55:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-15 01:55:37,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:55:37,206 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:55:37,206 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:55:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:55:37,207 INFO L82 PathProgramCache]: Analyzing trace with hash 174721792, now seen corresponding path program 1 times [2019-10-15 01:55:37,207 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:55:37,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787010404] [2019-10-15 01:55:37,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:37,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:37,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:55:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:55:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:55:37,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787010404] [2019-10-15 01:55:37,379 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:55:37,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:55:37,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531204217] [2019-10-15 01:55:37,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:55:37,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:55:37,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:55:37,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:55:37,381 INFO L87 Difference]: Start difference. First operand 1376 states and 1950 transitions. Second operand 5 states. [2019-10-15 01:55:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:55:43,089 INFO L93 Difference]: Finished difference Result 3939 states and 5736 transitions. [2019-10-15 01:55:43,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:55:43,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-10-15 01:55:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:55:43,115 INFO L225 Difference]: With dead ends: 3939 [2019-10-15 01:55:43,123 INFO L226 Difference]: Without dead ends: 2568 [2019-10-15 01:55:43,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:55:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2019-10-15 01:55:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1878. [2019-10-15 01:55:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2019-10-15 01:55:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2582 transitions. [2019-10-15 01:55:43,216 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2582 transitions. Word has length 67 [2019-10-15 01:55:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:55:43,217 INFO L462 AbstractCegarLoop]: Abstraction has 1878 states and 2582 transitions. [2019-10-15 01:55:43,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:55:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2582 transitions. [2019-10-15 01:55:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:55:43,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:55:43,233 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-15 01:55:43,233 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:55:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:55:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1857094137, now seen corresponding path program 1 times [2019-10-15 01:55:43,235 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:55:43,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025763795] [2019-10-15 01:55:43,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:43,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:55:43,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:55:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:55:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:55:43,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025763795] [2019-10-15 01:55:43,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393718044] [2019-10-15 01:55:43,588 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 [2019-10-15 01:55:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:55:43,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:55:43,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:55:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:55:43,888 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:55:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:55:44,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105922820] [2019-10-15 01:55:44,046 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-15 01:55:44,046 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:55:44,054 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:55:44,067 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:55:44,068 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:55:44,256 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-15 01:55:44,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-15 01:55:44,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2019-10-15 01:55:45,132 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-15 01:55:45,421 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8487 conjuctions. This might take some time... [2019-10-15 01:55:45,586 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2019-10-15 01:55:45,827 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8487 conjuctions. This might take some time... [2019-10-15 01:55:47,188 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 80 for LOIs [2019-10-15 01:55:47,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 29 [2019-10-15 01:55:49,526 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 55416 conjuctions. This might take some time...