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/Problem12_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:51:33,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:51:33,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:51:33,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:51:33,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:51:33,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:51:33,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:51:33,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:51:33,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:51:33,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:51:33,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:51:33,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:51:33,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:51:33,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:51:33,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:51:33,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:51:33,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:51:33,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:51:33,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:51:33,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:51:33,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:51:33,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:51:33,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:51:33,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:51:33,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:51:33,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:51:33,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:51:33,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:51:33,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:51:33,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:51:33,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:51:33,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:51:33,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:51:33,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:51:33,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:51:33,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:51:33,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:51:33,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:51:33,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:51:33,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:51:33,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:51:33,306 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 01:51:33,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:51:33,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:51:33,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:51:33,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:51:33,345 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:51:33,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:51:33,347 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:51:33,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:51:33,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:51:33,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:51:33,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:51:33,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:51:33,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:51:33,349 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:51:33,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:51:33,349 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:51:33,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:51:33,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:51:33,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:51:33,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:51:33,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:51:33,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:51:33,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:51:33,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:51:33,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:51:33,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:51:33,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:51:33,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:51:33,355 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 01:51:33,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:51:33,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:51:33,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:51:33,687 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:51:33,688 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:51:33,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59.c [2019-10-15 01:51:33,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf172ce8/8000e6529918488abc47a4a9a73c4b26/FLAG8b1a0c58e [2019-10-15 01:51:34,476 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:51:34,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59.c [2019-10-15 01:51:34,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf172ce8/8000e6529918488abc47a4a9a73c4b26/FLAG8b1a0c58e [2019-10-15 01:51:35,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf172ce8/8000e6529918488abc47a4a9a73c4b26 [2019-10-15 01:51:35,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:51:35,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:51:35,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:35,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:51:35,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:51:35,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:35" (1/1) ... [2019-10-15 01:51:35,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3a515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:35, skipping insertion in model container [2019-10-15 01:51:35,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:35" (1/1) ... [2019-10-15 01:51:35,056 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:51:35,206 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:51:36,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:36,884 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:51:37,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:37,609 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:51:37,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37 WrapperNode [2019-10-15 01:51:37,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:37,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:51:37,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:51:37,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:51:37,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (1/1) ... [2019-10-15 01:51:37,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:51:37,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:51:37,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:51:37,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:51:37,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (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 01:51:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:51:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:51:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:51:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:51:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:51:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:51:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:51:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:51:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:51:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:51:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:51:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:51:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:51:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:51:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:51:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:51:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:51:44,443 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:51:44,444 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:51:44,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:44 BoogieIcfgContainer [2019-10-15 01:51:44,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:51:44,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:51:44,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:51:44,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:51:44,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:51:35" (1/3) ... [2019-10-15 01:51:44,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735dab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:44, skipping insertion in model container [2019-10-15 01:51:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:37" (2/3) ... [2019-10-15 01:51:44,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735dab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:44, skipping insertion in model container [2019-10-15 01:51:44,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:44" (3/3) ... [2019-10-15 01:51:44,471 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label59.c [2019-10-15 01:51:44,481 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:51:44,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:51:44,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:51:44,547 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:51:44,548 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:51:44,548 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:51:44,548 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:51:44,548 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:51:44,548 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:51:44,548 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:51:44,548 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:51:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-15 01:51:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:51:44,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:44,599 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:44,601 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:44,607 INFO L82 PathProgramCache]: Analyzing trace with hash -874908850, now seen corresponding path program 1 times [2019-10-15 01:51:44,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:44,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224633593] [2019-10-15 01:51:44,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:44,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:44,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:44,877 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 01:51:44,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224633593] [2019-10-15 01:51:44,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:44,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:51:44,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047703675] [2019-10-15 01:51:44,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:51:44,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:44,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:51:44,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:51:44,903 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-15 01:51:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:49,351 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-15 01:51:49,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:51:49,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:51:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:49,382 INFO L225 Difference]: With dead ends: 2068 [2019-10-15 01:51:49,382 INFO L226 Difference]: Without dead ends: 1371 [2019-10-15 01:51:49,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:51:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-15 01:51:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1367. [2019-10-15 01:51:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2019-10-15 01:51:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2628 transitions. [2019-10-15 01:51:49,554 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2628 transitions. Word has length 11 [2019-10-15 01:51:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:49,555 INFO L462 AbstractCegarLoop]: Abstraction has 1367 states and 2628 transitions. [2019-10-15 01:51:49,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:51:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2628 transitions. [2019-10-15 01:51:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 01:51:49,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:49,558 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 01:51:49,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:49,559 INFO L82 PathProgramCache]: Analyzing trace with hash 133475068, now seen corresponding path program 1 times [2019-10-15 01:51:49,560 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:49,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387662840] [2019-10-15 01:51:49,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:49,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:49,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:49,707 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 01:51:49,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387662840] [2019-10-15 01:51:49,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:49,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:51:49,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834516140] [2019-10-15 01:51:49,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:51:49,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:51:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:51:49,713 INFO L87 Difference]: Start difference. First operand 1367 states and 2628 transitions. Second operand 5 states. [2019-10-15 01:51:56,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:56,215 INFO L93 Difference]: Finished difference Result 4145 states and 7983 transitions. [2019-10-15 01:51:56,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:51:56,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-15 01:51:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:56,236 INFO L225 Difference]: With dead ends: 4145 [2019-10-15 01:51:56,236 INFO L226 Difference]: Without dead ends: 2783 [2019-10-15 01:51:56,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 01:51:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2019-10-15 01:51:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2754. [2019-10-15 01:51:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2019-10-15 01:51:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4674 transitions. [2019-10-15 01:51:56,365 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4674 transitions. Word has length 21 [2019-10-15 01:51:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:56,365 INFO L462 AbstractCegarLoop]: Abstraction has 2754 states and 4674 transitions. [2019-10-15 01:51:56,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:51:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4674 transitions. [2019-10-15 01:51:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:51:56,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:56,368 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:56,369 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash -411106032, now seen corresponding path program 1 times [2019-10-15 01:51:56,370 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:56,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836860882] [2019-10-15 01:51:56,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:56,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:56,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:51:56,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836860882] [2019-10-15 01:51:56,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118038170] [2019-10-15 01:51:56,518 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 01:51:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:56,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:51:56,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:51:56,693 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 01:51:56,694 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:51:56,741 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 01:51:56,741 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:51:56,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-15 01:51:56,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084540961] [2019-10-15 01:51:56,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:51:56,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:56,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:51:56,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:51:56,745 INFO L87 Difference]: Start difference. First operand 2754 states and 4674 transitions. Second operand 4 states. [2019-10-15 01:52:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:52:04,504 INFO L93 Difference]: Finished difference Result 10993 states and 19157 transitions. [2019-10-15 01:52:04,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:52:04,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-15 01:52:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:52:04,545 INFO L225 Difference]: With dead ends: 10993 [2019-10-15 01:52:04,545 INFO L226 Difference]: Without dead ends: 8244 [2019-10-15 01:52:04,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:52:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2019-10-15 01:52:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 7921. [2019-10-15 01:52:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7921 states. [2019-10-15 01:52:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12067 transitions. [2019-10-15 01:52:04,767 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12067 transitions. Word has length 27 [2019-10-15 01:52:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:52:04,768 INFO L462 AbstractCegarLoop]: Abstraction has 7921 states and 12067 transitions. [2019-10-15 01:52:04,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:52:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12067 transitions. [2019-10-15 01:52:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 01:52:04,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:52:04,771 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:52:04,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:52:04,978 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:52:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:52:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash 529687159, now seen corresponding path program 1 times [2019-10-15 01:52:04,978 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:52:04,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588670108] [2019-10-15 01:52:04,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:52:04,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:52:04,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:52:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:52:05,127 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 01:52:05,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588670108] [2019-10-15 01:52:05,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:52:05,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:52:05,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614052805] [2019-10-15 01:52:05,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:52:05,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:52:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:52:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:52:05,130 INFO L87 Difference]: Start difference. First operand 7921 states and 12067 transitions. Second operand 6 states.