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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:51:16,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:51:16,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:51:16,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:51:16,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:51:16,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:51:16,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:51:16,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:51:16,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:51:16,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:51:16,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:51:16,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:51:16,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:51:16,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:51:16,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:51:16,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:51:16,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:51:16,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:51:16,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:51:16,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:51:16,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:51:16,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:51:16,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:51:16,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:51:16,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:51:16,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:51:16,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:51:16,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:51:16,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:51:16,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:51:16,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:51:16,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:51:16,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:51:16,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:51:16,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:51:16,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:51:16,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:51:16,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:51:16,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:51:16,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:51:16,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:51:16,791 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 01:51:16,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:51:16,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:51:16,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:51:16,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:51:16,817 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:51:16,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:51:16,818 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:51:16,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:51:16,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:51:16,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:51:16,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:51:16,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:51:16,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:51:16,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:51:16,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:51:16,821 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:51:16,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:51:16,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:51:16,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:51:16,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:51:16,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:51:16,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:51:16,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:51:16,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:51:16,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:51:16,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:51:16,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:51:16,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:51:16,825 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 01:51:17,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:51:17,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:51:17,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:51:17,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:51:17,136 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:51:17,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-10-15 01:51:17,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7894d9b/5d3fd52e47c74bc7b4859abb6261b2cc/FLAGb5e849830 [2019-10-15 01:51:17,957 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:51:17,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-10-15 01:51:17,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7894d9b/5d3fd52e47c74bc7b4859abb6261b2cc/FLAGb5e849830 [2019-10-15 01:51:18,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7894d9b/5d3fd52e47c74bc7b4859abb6261b2cc [2019-10-15 01:51:18,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:51:18,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:51:18,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:18,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:51:18,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:51:18,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:18" (1/1) ... [2019-10-15 01:51:18,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f82b407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:18, skipping insertion in model container [2019-10-15 01:51:18,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:51:18" (1/1) ... [2019-10-15 01:51:18,050 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:51:18,193 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:51:19,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:19,536 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:51:20,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:51:20,230 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:51:20,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20 WrapperNode [2019-10-15 01:51:20,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:51:20,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:51:20,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:51:20,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:51:20,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (1/1) ... [2019-10-15 01:51:20,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:51:20,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:51:20,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:51:20,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:51:20,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (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 01:51:20,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:51:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:51:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:51:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:51:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:51:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:51:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:51:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:51:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:51:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:51:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:51:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:51:27,365 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:51:27,365 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:51:27,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:27 BoogieIcfgContainer [2019-10-15 01:51:27,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:51:27,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:51:27,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:51:27,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:51:27,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:51:18" (1/3) ... [2019-10-15 01:51:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f647246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:27, skipping insertion in model container [2019-10-15 01:51:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:51:20" (2/3) ... [2019-10-15 01:51:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f647246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:51:27, skipping insertion in model container [2019-10-15 01:51:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:51:27" (3/3) ... [2019-10-15 01:51:27,376 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2019-10-15 01:51:27,388 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:51:27,400 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:51:27,413 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:51:27,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:51:27,452 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:51:27,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:51:27,453 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:51:27,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:51:27,453 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:51:27,453 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:51:27,453 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:51:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-15 01:51:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:51:27,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:27,493 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:51:27,496 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:27,502 INFO L82 PathProgramCache]: Analyzing trace with hash -874906034, now seen corresponding path program 1 times [2019-10-15 01:51:27,511 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:27,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069433825] [2019-10-15 01:51:27,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:27,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:27,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:27,760 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 01:51:27,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069433825] [2019-10-15 01:51:27,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:27,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:51:27,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365383939] [2019-10-15 01:51:27,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:51:27,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:51:27,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:51:27,785 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 4 states. [2019-10-15 01:51:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:35,914 INFO L93 Difference]: Finished difference Result 2753 states and 5428 transitions. [2019-10-15 01:51:35,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:51:35,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 01:51:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:35,960 INFO L225 Difference]: With dead ends: 2753 [2019-10-15 01:51:35,961 INFO L226 Difference]: Without dead ends: 2052 [2019-10-15 01:51:35,975 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 01:51:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2019-10-15 01:51:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 2042. [2019-10-15 01:51:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2019-10-15 01:51:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3332 transitions. [2019-10-15 01:51:36,148 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3332 transitions. Word has length 11 [2019-10-15 01:51:36,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:36,148 INFO L462 AbstractCegarLoop]: Abstraction has 2042 states and 3332 transitions. [2019-10-15 01:51:36,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:51:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3332 transitions. [2019-10-15 01:51:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:51:36,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:36,153 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] [2019-10-15 01:51:36,153 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:36,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1141546566, now seen corresponding path program 1 times [2019-10-15 01:51:36,155 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:36,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263260529] [2019-10-15 01:51:36,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:36,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:36,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:36,308 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 01:51:36,309 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263260529] [2019-10-15 01:51:36,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:36,309 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:51:36,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854299842] [2019-10-15 01:51:36,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:51:36,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:36,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:51:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:51:36,312 INFO L87 Difference]: Start difference. First operand 2042 states and 3332 transitions. Second operand 5 states. [2019-10-15 01:51:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:43,523 INFO L93 Difference]: Finished difference Result 6198 states and 10204 transitions. [2019-10-15 01:51:43,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:51:43,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-15 01:51:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:43,552 INFO L225 Difference]: With dead ends: 6198 [2019-10-15 01:51:43,552 INFO L226 Difference]: Without dead ends: 4161 [2019-10-15 01:51:43,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:51:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2019-10-15 01:51:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4120. [2019-10-15 01:51:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4120 states. [2019-10-15 01:51:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 6129 transitions. [2019-10-15 01:51:43,719 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 6129 transitions. Word has length 32 [2019-10-15 01:51:43,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:43,719 INFO L462 AbstractCegarLoop]: Abstraction has 4120 states and 6129 transitions. [2019-10-15 01:51:43,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:51:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 6129 transitions. [2019-10-15 01:51:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-15 01:51:43,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:43,723 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, 1, 1, 1, 1, 1, 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 01:51:43,723 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash 933844169, now seen corresponding path program 1 times [2019-10-15 01:51:43,724 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:43,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944057998] [2019-10-15 01:51:43,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:43,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:43,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:43,926 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 01:51:43,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944057998] [2019-10-15 01:51:43,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:43,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:43,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604343387] [2019-10-15 01:51:43,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:43,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:43,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:43,929 INFO L87 Difference]: Start difference. First operand 4120 states and 6129 transitions. Second operand 6 states. [2019-10-15 01:51:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:51:50,183 INFO L93 Difference]: Finished difference Result 12580 states and 19303 transitions. [2019-10-15 01:51:50,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:51:50,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2019-10-15 01:51:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:51:50,228 INFO L225 Difference]: With dead ends: 12580 [2019-10-15 01:51:50,228 INFO L226 Difference]: Without dead ends: 8465 [2019-10-15 01:51:50,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:51:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8465 states. [2019-10-15 01:51:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8465 to 8371. [2019-10-15 01:51:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8371 states. [2019-10-15 01:51:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 12247 transitions. [2019-10-15 01:51:50,461 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 12247 transitions. Word has length 65 [2019-10-15 01:51:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:51:50,461 INFO L462 AbstractCegarLoop]: Abstraction has 8371 states and 12247 transitions. [2019-10-15 01:51:50,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:51:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 12247 transitions. [2019-10-15 01:51:50,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-15 01:51:50,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:51:50,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:50,465 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:51:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:51:50,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1218291106, now seen corresponding path program 1 times [2019-10-15 01:51:50,466 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:51:50,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804805967] [2019-10-15 01:51:50,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:50,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:51:50,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:51:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:51:50,583 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 01:51:50,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804805967] [2019-10-15 01:51:50,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:51:50,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:51:50,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968257813] [2019-10-15 01:51:50,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:51:50,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:51:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:51:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:51:50,586 INFO L87 Difference]: Start difference. First operand 8371 states and 12247 transitions. Second operand 6 states.