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/Problem04_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:59:51,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:59:51,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:59:51,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:59:51,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:59:51,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:59:51,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:59:51,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:59:51,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:59:51,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:59:51,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:59:51,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:59:51,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:59:51,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:59:51,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:59:51,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:59:51,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:59:51,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:59:51,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:59:51,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:59:51,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:59:51,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:59:51,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:59:51,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:59:51,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 00:59:51,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 00:59:51,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 00:59:51,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 00:59:51,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 00:59:51,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 00:59:51,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 00:59:51,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 00:59:51,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 00:59:51,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 00:59:51,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 00:59:51,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 00:59:51,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 00:59:51,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 00:59:51,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:59:51,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:59:51,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:59:51,581 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 [2019-10-07 00:59:51,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:59:51,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:59:51,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:59:51,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:59:51,620 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:59:51,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:59:51,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:59:51,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:59:51,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:59:51,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:59:51,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:59:51,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:59:51,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:59:51,623 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:59:51,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:59:51,623 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:59:51,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:59:51,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:59:51,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:59:51,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:59:51,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:59:51,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:59:51,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:59:51,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:59:51,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:59:51,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:59:51,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:59:51,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:59:51,626 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 [2019-10-07 00:59:51,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:59:51,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:59:51,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:59:51,919 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:59:51,920 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:59:51,920 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2019-10-07 00:59:51,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad1aed41/e4f4de75c8304c7a8bf3a929f27cc34f/FLAG6c4de122a [2019-10-07 00:59:52,814 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:59:52,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2019-10-07 00:59:52,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad1aed41/e4f4de75c8304c7a8bf3a929f27cc34f/FLAG6c4de122a [2019-10-07 00:59:53,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad1aed41/e4f4de75c8304c7a8bf3a929f27cc34f [2019-10-07 00:59:53,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:59:53,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:59:53,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:53,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:59:53,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:59:53,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:53" (1/1) ... [2019-10-07 00:59:53,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a57a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:53, skipping insertion in model container [2019-10-07 00:59:53,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:53" (1/1) ... [2019-10-07 00:59:53,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:59:53,548 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:59:55,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:55,136 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:59:55,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:59:55,964 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:59:55,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55 WrapperNode [2019-10-07 00:59:55,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:55,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:59:55,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:59:55,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:59:55,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:55,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (1/1) ... [2019-10-07 00:59:56,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:59:56,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:59:56,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:59:56,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:59:56,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (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 [2019-10-07 00:59:56,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:59:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:59:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:59:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 00:59:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 00:59:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 00:59:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:59:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:59:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 00:59:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 00:59:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 00:59:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:59:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:59:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:59:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:59:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:59:56,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 01:00:01,716 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 01:00:01,716 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 01:00:01,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:01 BoogieIcfgContainer [2019-10-07 01:00:01,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 01:00:01,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 01:00:01,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 01:00:01,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 01:00:01,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:59:53" (1/3) ... [2019-10-07 01:00:01,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6915f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:01, skipping insertion in model container [2019-10-07 01:00:01,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:55" (2/3) ... [2019-10-07 01:00:01,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6915f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:01, skipping insertion in model container [2019-10-07 01:00:01,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:01" (3/3) ... [2019-10-07 01:00:01,729 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label28.c [2019-10-07 01:00:01,744 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 01:00:01,754 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 01:00:01,767 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 01:00:01,804 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 01:00:01,804 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 01:00:01,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 01:00:01,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 01:00:01,805 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 01:00:01,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 01:00:01,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 01:00:01,805 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 01:00:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 01:00:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 01:00:01,899 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:01,901 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:01,903 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1899127911, now seen corresponding path program 1 times [2019-10-07 01:00:01,920 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:01,920 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:01,921 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:01,921 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:03,667 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:03,667 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:03,668 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:03,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:03,691 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 01:00:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:08,677 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 01:00:08,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:08,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 01:00:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:08,720 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 01:00:08,720 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 01:00:08,730 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 01:00:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 01:00:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 01:00:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2835 transitions. [2019-10-07 01:00:08,876 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2835 transitions. Word has length 767 [2019-10-07 01:00:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:08,878 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2835 transitions. [2019-10-07 01:00:08,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2835 transitions. [2019-10-07 01:00:08,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2019-10-07 01:00:08,906 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:08,907 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:08,908 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash 793930052, now seen corresponding path program 1 times [2019-10-07 01:00:08,909 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:08,909 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:08,909 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:08,909 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:09,933 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:09,934 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:09,934 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 01:00:09,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 01:00:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 01:00:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 01:00:09,939 INFO L87 Difference]: Start difference. First operand 1555 states and 2835 transitions. Second operand 6 states. [2019-10-07 01:00:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:15,770 INFO L93 Difference]: Finished difference Result 4743 states and 8684 transitions. [2019-10-07 01:00:15,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 01:00:15,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 825 [2019-10-07 01:00:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:15,795 INFO L225 Difference]: With dead ends: 4743 [2019-10-07 01:00:15,795 INFO L226 Difference]: Without dead ends: 3193 [2019-10-07 01:00:15,800 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 01:00:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2019-10-07 01:00:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3163. [2019-10-07 01:00:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2019-10-07 01:00:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 5450 transitions. [2019-10-07 01:00:15,916 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 5450 transitions. Word has length 825 [2019-10-07 01:00:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:15,918 INFO L462 AbstractCegarLoop]: Abstraction has 3163 states and 5450 transitions. [2019-10-07 01:00:15,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 01:00:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 5450 transitions. [2019-10-07 01:00:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2019-10-07 01:00:15,941 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:15,943 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 01:00:15,943 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1091205933, now seen corresponding path program 1 times [2019-10-07 01:00:15,945 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:15,945 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:15,946 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:15,947 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:16,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:16,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:00:16,892 INFO L95 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 [2019-10-07 01:00:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:17,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 01:00:17,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:00:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:17,794 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:00:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:18,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:00:18,357 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-07 01:00:18,357 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:00:18,368 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:00:18,378 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:00:18,379 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:00:18,706 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-07 01:00:19,798 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:19,799 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 01:00:19,808 INFO L168 Benchmark]: Toolchain (without parser) took 26433.87 ms. Allocated memory was 145.8 MB in the beginning and 921.7 MB in the end (delta: 775.9 MB). Free memory was 88.2 MB in the beginning and 221.1 MB in the end (delta: -133.0 MB). Peak memory consumption was 643.0 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,810 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2589.06 ms. Allocated memory was 145.8 MB in the beginning and 254.8 MB in the end (delta: 109.1 MB). Free memory was 88.0 MB in the beginning and 169.1 MB in the end (delta: -81.1 MB). Peak memory consumption was 112.7 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,813 INFO L168 Benchmark]: Boogie Preprocessor took 281.01 ms. Allocated memory is still 254.8 MB. Free memory was 169.1 MB in the beginning and 139.9 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,815 INFO L168 Benchmark]: RCFGBuilder took 5471.59 ms. Allocated memory was 254.8 MB in the beginning and 396.4 MB in the end (delta: 141.6 MB). Free memory was 139.9 MB in the beginning and 300.8 MB in the end (delta: -160.9 MB). Peak memory consumption was 236.2 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,816 INFO L168 Benchmark]: TraceAbstraction took 18083.25 ms. Allocated memory was 396.4 MB in the beginning and 921.7 MB in the end (delta: 525.3 MB). Free memory was 300.8 MB in the beginning and 221.1 MB in the end (delta: 79.7 MB). Peak memory consumption was 605.0 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:19,832 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2589.06 ms. Allocated memory was 145.8 MB in the beginning and 254.8 MB in the end (delta: 109.1 MB). Free memory was 88.0 MB in the beginning and 169.1 MB in the end (delta: -81.1 MB). Peak memory consumption was 112.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 281.01 ms. Allocated memory is still 254.8 MB. Free memory was 169.1 MB in the beginning and 139.9 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5471.59 ms. Allocated memory was 254.8 MB in the beginning and 396.4 MB in the end (delta: 141.6 MB). Free memory was 139.9 MB in the beginning and 300.8 MB in the end (delta: -160.9 MB). Peak memory consumption was 236.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18083.25 ms. Allocated memory was 396.4 MB in the beginning and 921.7 MB in the end (delta: 525.3 MB). Free memory was 300.8 MB in the beginning and 221.1 MB in the end (delta: 79.7 MB). Peak memory consumption was 605.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...