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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:59:57,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:59:57,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:59:57,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:59:57,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:59:57,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:59:57,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:59:57,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:59:57,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:59:57,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:59:57,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:59:57,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:59:57,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:59:57,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:59:57,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:59:57,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:59:57,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:59:57,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:59:57,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:59:57,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:59:57,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:59:57,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:59:57,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:59:57,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:59:57,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:59:57,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 00:59:57,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 00:59:57,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 00:59:57,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 00:59:57,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 00:59:57,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 00:59:57,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 00:59:57,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 00:59:57,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:59:57,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:59:57,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:59:57,450 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 00:59:57,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:59:57,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:59:57,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:59:57,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:59:57,476 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:59:57,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:59:57,477 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:59:57,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:59:57,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:59:57,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:59:57,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:59:57,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:59:57,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:59:57,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:59:57,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:59:57,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:59:57,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:59:57,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:59:57,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:59:57,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:59:57,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:59:57,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:59:57,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:59:57,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:59:57,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:59:57,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:59:57,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:59:57,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:59:57,484 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 00:59:57,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:59:57,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:59:57,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:59:57,782 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:59:57,782 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:59:57,783 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label29.c [2019-10-07 00:59:57,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebc9f8a/bf320ccaf0fa40d2b77efdcebf791890/FLAG49f7ac7e7 [2019-10-07 00:59:58,562 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:59:58,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label29.c [2019-10-07 00:59:58,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebc9f8a/bf320ccaf0fa40d2b77efdcebf791890/FLAG49f7ac7e7 [2019-10-07 00:59:59,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebc9f8a/bf320ccaf0fa40d2b77efdcebf791890 [2019-10-07 00:59:59,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:59:59,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:59:59,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:59:59,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:59:59,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:59:59,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:59" (1/1) ... [2019-10-07 00:59:59,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36edca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:59:59, skipping insertion in model container [2019-10-07 00:59:59,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:59:59" (1/1) ... [2019-10-07 00:59:59,139 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:59:59,319 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 01:00:01,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:01,088 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 01:00:01,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 01:00:01,791 INFO L192 MainTranslator]: Completed translation [2019-10-07 01:00:01,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01 WrapperNode [2019-10-07 01:00:01,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 01:00:01,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 01:00:01,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 01:00:01,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 01:00:01,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:01,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:01,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:01,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:01,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:01,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:02,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (1/1) ... [2019-10-07 01:00:02,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 01:00:02,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 01:00:02,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 01:00:02,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 01:00:02,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (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 01:00:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 01:00:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 01:00:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 01:00:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 01:00:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 01:00:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 01:00:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 01:00:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 01:00:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 01:00:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 01:00:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 01:00:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 01:00:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 01:00:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 01:00:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 01:00:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 01:00:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 01:00:06,996 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 01:00:06,996 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 01:00:06,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:06 BoogieIcfgContainer [2019-10-07 01:00:06,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 01:00:07,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 01:00:07,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 01:00:07,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 01:00:07,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:59:59" (1/3) ... [2019-10-07 01:00:07,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a12671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:07, skipping insertion in model container [2019-10-07 01:00:07,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:00:01" (2/3) ... [2019-10-07 01:00:07,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a12671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:00:07, skipping insertion in model container [2019-10-07 01:00:07,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:00:06" (3/3) ... [2019-10-07 01:00:07,017 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label29.c [2019-10-07 01:00:07,027 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 01:00:07,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 01:00:07,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 01:00:07,089 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 01:00:07,089 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 01:00:07,089 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 01:00:07,089 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 01:00:07,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 01:00:07,089 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 01:00:07,090 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 01:00:07,090 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 01:00:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-07 01:00:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-07 01:00:07,185 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:07,187 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 01:00:07,189 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:07,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1899134055, now seen corresponding path program 1 times [2019-10-07 01:00:07,205 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:07,205 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:07,206 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:07,206 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:09,509 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 01:00:09,510 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:09,511 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:09,511 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 01:00:09,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 01:00:09,539 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-07 01:00:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:13,677 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-07 01:00:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:13,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-07 01:00:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:13,719 INFO L225 Difference]: With dead ends: 2343 [2019-10-07 01:00:13,719 INFO L226 Difference]: Without dead ends: 1555 [2019-10-07 01:00:13,729 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 01:00:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-07 01:00:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-07 01:00:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-07 01:00:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 3003 transitions. [2019-10-07 01:00:13,885 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 3003 transitions. Word has length 767 [2019-10-07 01:00:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:13,888 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 3003 transitions. [2019-10-07 01:00:13,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 3003 transitions. [2019-10-07 01:00:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-10-07 01:00:13,914 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:13,915 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:13,916 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:13,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1537904664, now seen corresponding path program 1 times [2019-10-07 01:00:13,917 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:13,917 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:13,917 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:13,917 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:15,580 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:15,580 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 01:00:15,580 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 01:00:15,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 01:00:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 01:00:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 01:00:15,584 INFO L87 Difference]: Start difference. First operand 1555 states and 3003 transitions. Second operand 4 states. [2019-10-07 01:00:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:21,999 INFO L93 Difference]: Finished difference Result 6201 states and 12123 transitions. [2019-10-07 01:00:22,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 01:00:22,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 775 [2019-10-07 01:00:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:22,043 INFO L225 Difference]: With dead ends: 6201 [2019-10-07 01:00:22,044 INFO L226 Difference]: Without dead ends: 4651 [2019-10-07 01:00:22,054 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 01:00:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2019-10-07 01:00:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2019-10-07 01:00:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2019-10-07 01:00:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7921 transitions. [2019-10-07 01:00:22,284 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7921 transitions. Word has length 775 [2019-10-07 01:00:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:22,286 INFO L462 AbstractCegarLoop]: Abstraction has 4651 states and 7921 transitions. [2019-10-07 01:00:22,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 01:00:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7921 transitions. [2019-10-07 01:00:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2019-10-07 01:00:22,320 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:22,321 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:22,322 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:22,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1772121122, now seen corresponding path program 1 times [2019-10-07 01:00:22,324 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:22,325 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:22,326 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:22,326 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 01:00:24,354 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:24,354 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:00:24,355 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 01:00:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:24,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 01:00:24,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:00:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:25,483 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:00:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 01:00:26,044 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 01:00:26,044 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-07 01:00:26,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 01:00:26,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 01:00:26,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 01:00:26,048 INFO L87 Difference]: Start difference. First operand 4651 states and 7921 transitions. Second operand 3 states. [2019-10-07 01:00:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 01:00:30,066 INFO L93 Difference]: Finished difference Result 13941 states and 24107 transitions. [2019-10-07 01:00:30,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 01:00:30,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 786 [2019-10-07 01:00:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 01:00:30,116 INFO L225 Difference]: With dead ends: 13941 [2019-10-07 01:00:30,116 INFO L226 Difference]: Without dead ends: 9295 [2019-10-07 01:00:30,129 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1567 SyntacticMatches, 12 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 01:00:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2019-10-07 01:00:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 9295. [2019-10-07 01:00:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9295 states. [2019-10-07 01:00:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 14096 transitions. [2019-10-07 01:00:30,393 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 14096 transitions. Word has length 786 [2019-10-07 01:00:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 01:00:30,395 INFO L462 AbstractCegarLoop]: Abstraction has 9295 states and 14096 transitions. [2019-10-07 01:00:30,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 01:00:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 14096 transitions. [2019-10-07 01:00:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2019-10-07 01:00:30,438 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 01:00:30,439 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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] [2019-10-07 01:00:30,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:30,646 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 01:00:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 01:00:30,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1198660060, now seen corresponding path program 1 times [2019-10-07 01:00:30,648 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 01:00:30,649 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:30,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:30,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 01:00:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 01:00:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 168 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 01:00:31,859 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 01:00:31,859 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 01:00:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 01:00:32,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 01:00:32,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 01:00:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 01:00:32,788 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 01:00:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 01:00:33,357 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 01:00:33,415 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-07 01:00:33,415 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 01:00:33,426 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 01:00:33,434 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 01:00:33,435 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 01:00:33,769 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 101 for LOIs [2019-10-07 01:00:34,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 01:00:34,718 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 01:00:34,726 INFO L168 Benchmark]: Toolchain (without parser) took 35601.43 ms. Allocated memory was 146.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 88.0 MB in the beginning and 448.6 MB in the end (delta: -360.5 MB). Peak memory consumption was 867.4 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,727 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2668.28 ms. Allocated memory was 146.3 MB in the beginning and 252.2 MB in the end (delta: 105.9 MB). Free memory was 87.8 MB in the beginning and 187.7 MB in the end (delta: -99.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,729 INFO L168 Benchmark]: Boogie Preprocessor took 239.35 ms. Allocated memory is still 252.2 MB. Free memory was 187.7 MB in the beginning and 158.7 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,730 INFO L168 Benchmark]: RCFGBuilder took 4966.25 ms. Allocated memory was 252.2 MB in the beginning and 376.4 MB in the end (delta: 124.3 MB). Free memory was 158.7 MB in the beginning and 228.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 225.6 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,731 INFO L168 Benchmark]: TraceAbstraction took 27722.98 ms. Allocated memory was 376.4 MB in the beginning and 1.4 GB in the end (delta: 997.7 MB). Free memory was 228.2 MB in the beginning and 448.6 MB in the end (delta: -220.3 MB). Peak memory consumption was 777.4 MB. Max. memory is 7.1 GB. [2019-10-07 01:00:34,736 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2668.28 ms. Allocated memory was 146.3 MB in the beginning and 252.2 MB in the end (delta: 105.9 MB). Free memory was 87.8 MB in the beginning and 187.7 MB in the end (delta: -99.9 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.35 ms. Allocated memory is still 252.2 MB. Free memory was 187.7 MB in the beginning and 158.7 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4966.25 ms. Allocated memory was 252.2 MB in the beginning and 376.4 MB in the end (delta: 124.3 MB). Free memory was 158.7 MB in the beginning and 228.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 225.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27722.98 ms. Allocated memory was 376.4 MB in the beginning and 1.4 GB in the end (delta: 997.7 MB). Free memory was 228.2 MB in the beginning and 448.6 MB in the end (delta: -220.3 MB). Peak memory consumption was 777.4 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...