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/Problem03_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:46,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:46,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:46,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:41:46,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:41:46,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:41:46,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:41:46,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:41:46,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:41:46,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:41:46,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:41:46,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:41:46,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:46,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:46,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:46,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:46,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:46,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:46,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:46,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:46,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:46,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:46,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:46,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:46,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:41:46,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:41:46,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:41:46,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:41:46,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:41:46,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:41:46,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:41:46,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:41:46,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:41:46,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:41:46,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:41:46,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:41:46,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:41:46,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:41:46,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:46,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:46,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:46,434 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 [2019-10-13 21:41:46,461 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:46,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:46,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:46,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:46,463 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:46,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:46,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:46,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:46,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:46,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:46,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:46,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:46,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:46,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:46,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:46,467 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:46,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:46,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:46,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:46,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:46,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:46,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:46,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:46,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:46,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:46,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:46,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:46,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:46,474 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 [2019-10-13 21:41:46,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:46,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:46,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:46,758 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:46,759 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:46,760 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2019-10-13 21:41:46,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05a26324/ac7f6b5de3864879a4c47449251bca74/FLAG3141e1f9e [2019-10-13 21:41:47,578 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:47,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2019-10-13 21:41:47,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05a26324/ac7f6b5de3864879a4c47449251bca74/FLAG3141e1f9e [2019-10-13 21:41:47,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05a26324/ac7f6b5de3864879a4c47449251bca74 [2019-10-13 21:41:47,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:47,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:47,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:47,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:47,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:47,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:47" (1/1) ... [2019-10-13 21:41:47,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a51b253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:47, skipping insertion in model container [2019-10-13 21:41:47,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:47" (1/1) ... [2019-10-13 21:41:47,841 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:47,911 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:48,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:48,810 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:49,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:49,103 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:49,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49 WrapperNode [2019-10-13 21:41:49,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:49,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:49,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:49,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:49,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (1/1) ... [2019-10-13 21:41:49,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:49,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:49,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:49,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:49,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (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 [2019-10-13 21:41:49,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:49,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:49,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:49,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:49,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:49,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:52,585 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:52,588 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:52,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:52 BoogieIcfgContainer [2019-10-13 21:41:52,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:52,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:52,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:52,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:52,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:47" (1/3) ... [2019-10-13 21:41:52,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1fe613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:52, skipping insertion in model container [2019-10-13 21:41:52,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:49" (2/3) ... [2019-10-13 21:41:52,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1fe613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:52, skipping insertion in model container [2019-10-13 21:41:52,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:52" (3/3) ... [2019-10-13 21:41:52,610 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label32.c [2019-10-13 21:41:52,621 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:52,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:52,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:52,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:52,678 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:52,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:52,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:52,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:52,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:52,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:52,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-13 21:41:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:41:52,734 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:52,736 INFO L380 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] [2019-10-13 21:41:52,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash 136475430, now seen corresponding path program 1 times [2019-10-13 21:41:52,752 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:52,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814775422] [2019-10-13 21:41:52,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:52,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:52,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:53,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814775422] [2019-10-13 21:41:53,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:53,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:53,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116878232] [2019-10-13 21:41:53,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:53,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:53,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:53,600 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-13 21:41:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:54,912 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-13 21:41:54,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:54,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:41:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:54,949 INFO L225 Difference]: With dead ends: 462 [2019-10-13 21:41:54,949 INFO L226 Difference]: Without dead ends: 301 [2019-10-13 21:41:54,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-13 21:41:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-13 21:41:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-13 21:41:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 534 transitions. [2019-10-13 21:41:55,079 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 534 transitions. Word has length 149 [2019-10-13 21:41:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:55,083 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 534 transitions. [2019-10-13 21:41:55,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 534 transitions. [2019-10-13 21:41:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:41:55,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:55,096 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:41:55,097 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash 558845373, now seen corresponding path program 1 times [2019-10-13 21:41:55,099 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:55,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140622474] [2019-10-13 21:41:55,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:55,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:55,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:55,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140622474] [2019-10-13 21:41:55,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:55,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:55,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051046275] [2019-10-13 21:41:55,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:55,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:55,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:55,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:55,347 INFO L87 Difference]: Start difference. First operand 301 states and 534 transitions. Second operand 6 states. [2019-10-13 21:41:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:56,978 INFO L93 Difference]: Finished difference Result 927 states and 1699 transitions. [2019-10-13 21:41:56,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:41:56,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-13 21:41:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:56,988 INFO L225 Difference]: With dead ends: 927 [2019-10-13 21:41:56,989 INFO L226 Difference]: Without dead ends: 631 [2019-10-13 21:41:56,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:41:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-13 21:41:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 603. [2019-10-13 21:41:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-13 21:41:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1057 transitions. [2019-10-13 21:41:57,073 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1057 transitions. Word has length 158 [2019-10-13 21:41:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:57,073 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1057 transitions. [2019-10-13 21:41:57,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1057 transitions. [2019-10-13 21:41:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:41:57,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:57,078 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:41:57,078 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:57,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1532426478, now seen corresponding path program 1 times [2019-10-13 21:41:57,080 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:57,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088075082] [2019-10-13 21:41:57,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:57,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:57,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:57,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088075082] [2019-10-13 21:41:57,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:57,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:57,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336183245] [2019-10-13 21:41:57,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:57,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:57,392 INFO L87 Difference]: Start difference. First operand 603 states and 1057 transitions. Second operand 3 states. [2019-10-13 21:41:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:58,480 INFO L93 Difference]: Finished difference Result 1797 states and 3229 transitions. [2019-10-13 21:41:58,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:58,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:41:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:58,497 INFO L225 Difference]: With dead ends: 1797 [2019-10-13 21:41:58,498 INFO L226 Difference]: Without dead ends: 1199 [2019-10-13 21:41:58,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2019-10-13 21:41:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2019-10-13 21:41:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2019-10-13 21:41:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2080 transitions. [2019-10-13 21:41:58,552 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2080 transitions. Word has length 161 [2019-10-13 21:41:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:58,553 INFO L462 AbstractCegarLoop]: Abstraction has 1199 states and 2080 transitions. [2019-10-13 21:41:58,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2080 transitions. [2019-10-13 21:41:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:41:58,559 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:58,559 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:41:58,559 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1729519167, now seen corresponding path program 1 times [2019-10-13 21:41:58,560 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:58,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118516915] [2019-10-13 21:41:58,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:58,561 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:58,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:58,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118516915] [2019-10-13 21:41:58,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001901043] [2019-10-13 21:41:58,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:58,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:59,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:41:59,135 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:41:59,238 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:41:59,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-13 21:41:59,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008613914] [2019-10-13 21:41:59,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:59,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:59,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:59,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:41:59,241 INFO L87 Difference]: Start difference. First operand 1199 states and 2080 transitions. Second operand 3 states. [2019-10-13 21:42:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:00,245 INFO L93 Difference]: Finished difference Result 3583 states and 6440 transitions. [2019-10-13 21:42:00,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:42:00,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-13 21:42:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:00,263 INFO L225 Difference]: With dead ends: 3583 [2019-10-13 21:42:00,263 INFO L226 Difference]: Without dead ends: 2389 [2019-10-13 21:42:00,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:42:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2019-10-13 21:42:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2019-10-13 21:42:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2019-10-13 21:42:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 4009 transitions. [2019-10-13 21:42:00,350 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 4009 transitions. Word has length 178 [2019-10-13 21:42:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:00,351 INFO L462 AbstractCegarLoop]: Abstraction has 2389 states and 4009 transitions. [2019-10-13 21:42:00,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:42:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 4009 transitions. [2019-10-13 21:42:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:42:00,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:00,360 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:42:00,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:00,567 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash -561574442, now seen corresponding path program 1 times [2019-10-13 21:42:00,569 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:00,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303730336] [2019-10-13 21:42:00,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:00,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:00,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:00,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303730336] [2019-10-13 21:42:00,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275264673] [2019-10-13 21:42:00,746 INFO L94 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 [2019-10-13 21:42:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:00,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:42:00,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:42:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:42:01,030 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:42:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:42:01,162 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:42:01,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-13 21:42:01,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69429688] [2019-10-13 21:42:01,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:42:01,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:42:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:42:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:42:01,169 INFO L87 Difference]: Start difference. First operand 2389 states and 4009 transitions. Second operand 5 states. [2019-10-13 21:42:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:42:02,624 INFO L93 Difference]: Finished difference Result 7321 states and 13207 transitions. [2019-10-13 21:42:02,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:42:02,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2019-10-13 21:42:02,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:42:02,669 INFO L225 Difference]: With dead ends: 7321 [2019-10-13 21:42:02,670 INFO L226 Difference]: Without dead ends: 4937 [2019-10-13 21:42:02,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:42:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2019-10-13 21:42:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4867. [2019-10-13 21:42:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4867 states. [2019-10-13 21:42:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 8357 transitions. [2019-10-13 21:42:02,871 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 8357 transitions. Word has length 183 [2019-10-13 21:42:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:42:02,871 INFO L462 AbstractCegarLoop]: Abstraction has 4867 states and 8357 transitions. [2019-10-13 21:42:02,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:42:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 8357 transitions. [2019-10-13 21:42:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 21:42:02,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:42:02,891 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:42:03,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:03,097 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:42:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:42:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -733573143, now seen corresponding path program 1 times [2019-10-13 21:42:03,098 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:42:03,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404759225] [2019-10-13 21:42:03,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:03,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:42:03,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:42:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:03,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404759225] [2019-10-13 21:42:03,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616265106] [2019-10-13 21:42:03,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:42:03,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:42:03,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:42:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:03,680 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:42:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:42:03,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [716375928] [2019-10-13 21:42:03,830 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-13 21:42:03,830 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:42:03,840 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:42:03,851 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:42:03,852 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:42:04,167 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-13 21:42:04,282 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-13 21:42:04,692 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-13 21:42:05,035 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-13 21:42:05,330 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-13 21:42:05,619 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-13 21:42:05,964 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 21:42:06,275 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2019-10-13 21:42:07,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:42:07,032 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: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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: ε 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.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:102) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:42:07,040 INFO L168 Benchmark]: Toolchain (without parser) took 19216.89 ms. Allocated memory was 145.8 MB in the beginning and 576.7 MB in the end (delta: 431.0 MB). Free memory was 97.1 MB in the beginning and 257.0 MB in the end (delta: -159.9 MB). Peak memory consumption was 271.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:07,042 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:42:07,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1280.38 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 96.7 MB in the beginning and 125.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:07,043 INFO L168 Benchmark]: Boogie Preprocessor took 193.71 ms. Allocated memory is still 206.0 MB. Free memory was 125.1 MB in the beginning and 113.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:07,044 INFO L168 Benchmark]: RCFGBuilder took 3295.08 ms. Allocated memory was 206.0 MB in the beginning and 302.5 MB in the end (delta: 96.5 MB). Free memory was 113.0 MB in the beginning and 231.4 MB in the end (delta: -118.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:07,047 INFO L168 Benchmark]: TraceAbstraction took 14442.88 ms. Allocated memory was 302.5 MB in the beginning and 576.7 MB in the end (delta: 274.2 MB). Free memory was 231.4 MB in the beginning and 257.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 248.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:42:07,054 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1280.38 ms. Allocated memory was 145.8 MB in the beginning and 206.0 MB in the end (delta: 60.3 MB). Free memory was 96.7 MB in the beginning and 125.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 193.71 ms. Allocated memory is still 206.0 MB. Free memory was 125.1 MB in the beginning and 113.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3295.08 ms. Allocated memory was 206.0 MB in the beginning and 302.5 MB in the end (delta: 96.5 MB). Free memory was 113.0 MB in the beginning and 231.4 MB in the end (delta: -118.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14442.88 ms. Allocated memory was 302.5 MB in the beginning and 576.7 MB in the end (delta: 274.2 MB). Free memory was 231.4 MB in the beginning and 257.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 248.6 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: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...