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/Problem16_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:54:13,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:54:13,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:54:13,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:54:13,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:54:13,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:54:13,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:54:13,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:54:13,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:54:13,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:54:13,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:54:13,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:54:13,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:54:13,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:54:13,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:54:13,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:54:13,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:54:14,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:54:14,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:54:14,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:54:14,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:54:14,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:54:14,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:54:14,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:54:14,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:54:14,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:54:14,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:54:14,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:54:14,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:54:14,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:54:14,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:54:14,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:54:14,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:54:14,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:54:14,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:54:14,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:54:14,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:54:14,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:54:14,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:54:14,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:54:14,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:54:14,020 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 21:54:14,037 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:54:14,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:54:14,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:54:14,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:54:14,039 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:54:14,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:54:14,040 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:54:14,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:54:14,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:54:14,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:54:14,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:54:14,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:54:14,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:54:14,041 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:54:14,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:54:14,042 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:54:14,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:54:14,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:54:14,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:54:14,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:54:14,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:54:14,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:54:14,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:54:14,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:54:14,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:54:14,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:54:14,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:54:14,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:54:14,045 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 21:54:14,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:54:14,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:54:14,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:54:14,388 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:54:14,388 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:54:14,389 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50.c [2019-10-13 21:54:14,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817783a8f/20ef66c51434493db03d2267f564ba41/FLAG01135eafa [2019-10-13 21:54:15,155 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:54:15,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50.c [2019-10-13 21:54:15,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817783a8f/20ef66c51434493db03d2267f564ba41/FLAG01135eafa [2019-10-13 21:54:15,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817783a8f/20ef66c51434493db03d2267f564ba41 [2019-10-13 21:54:15,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:54:15,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:54:15,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:15,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:54:15,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:54:15,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:15" (1/1) ... [2019-10-13 21:54:15,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cbab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:15, skipping insertion in model container [2019-10-13 21:54:15,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:15" (1/1) ... [2019-10-13 21:54:15,370 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:54:15,455 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:54:16,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:16,289 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:54:16,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:16,530 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:54:16,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16 WrapperNode [2019-10-13 21:54:16,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:16,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:54:16,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:54:16,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:54:16,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (1/1) ... [2019-10-13 21:54:16,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:54:16,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:54:16,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:54:16,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:54:16,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (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 21:54:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:54:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:54:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:54:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:54:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:54:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:54:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:54:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:54:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:54:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:54:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:54:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:54:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:54:40,181 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:54:40,181 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:54:40,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:40 BoogieIcfgContainer [2019-10-13 21:54:40,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:54:40,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:54:40,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:54:40,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:54:40,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:15" (1/3) ... [2019-10-13 21:54:40,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48774d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:40, skipping insertion in model container [2019-10-13 21:54:40,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:16" (2/3) ... [2019-10-13 21:54:40,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48774d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:40, skipping insertion in model container [2019-10-13 21:54:40,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:40" (3/3) ... [2019-10-13 21:54:40,193 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label50.c [2019-10-13 21:54:40,205 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:54:40,216 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:54:40,228 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:54:40,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:54:40,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:54:40,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:54:40,268 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:54:40,268 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:54:40,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:54:40,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:54:40,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:54:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:54:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:54:40,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:40,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:40,314 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash 863564351, now seen corresponding path program 1 times [2019-10-13 21:54:40,326 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:40,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288568748] [2019-10-13 21:54:40,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:40,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:40,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:40,558 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 21:54:40,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288568748] [2019-10-13 21:54:40,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:40,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:54:40,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602841859] [2019-10-13 21:54:40,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:54:40,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:54:40,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:54:40,583 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:54:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:47,530 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:54:47,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:54:47,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:54:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:47,557 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:54:47,557 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:54:47,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:54:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:54:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 690. [2019-10-13 21:54:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:54:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1275 transitions. [2019-10-13 21:54:47,679 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1275 transitions. Word has length 11 [2019-10-13 21:54:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:47,682 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1275 transitions. [2019-10-13 21:54:47,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:54:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1275 transitions. [2019-10-13 21:54:47,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:54:47,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:47,684 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:47,685 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:47,686 INFO L82 PathProgramCache]: Analyzing trace with hash -928568270, now seen corresponding path program 1 times [2019-10-13 21:54:47,686 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:47,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331378867] [2019-10-13 21:54:47,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:47,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:47,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:47,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331378867] [2019-10-13 21:54:47,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:47,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:54:47,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503401021] [2019-10-13 21:54:47,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:54:47,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:54:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:54:47,829 INFO L87 Difference]: Start difference. First operand 690 states and 1275 transitions. Second operand 6 states. [2019-10-13 21:54:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:50,159 INFO L93 Difference]: Finished difference Result 2086 states and 3932 transitions. [2019-10-13 21:54:50,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:54:50,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-13 21:54:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:50,173 INFO L225 Difference]: With dead ends: 2086 [2019-10-13 21:54:50,173 INFO L226 Difference]: Without dead ends: 1401 [2019-10-13 21:54:50,179 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 21:54:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-13 21:54:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1372. [2019-10-13 21:54:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-13 21:54:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2424 transitions. [2019-10-13 21:54:50,272 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2424 transitions. Word has length 22 [2019-10-13 21:54:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:50,273 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 2424 transitions. [2019-10-13 21:54:50,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:54:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2424 transitions. [2019-10-13 21:54:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 21:54:50,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:50,275 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:50,275 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2144512272, now seen corresponding path program 1 times [2019-10-13 21:54:50,276 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:50,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185932779] [2019-10-13 21:54:50,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:50,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:50,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:54:50,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185932779] [2019-10-13 21:54:50,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005543709] [2019-10-13 21:54:50,387 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 21:54:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:50,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:54:50,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:54:50,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:54:50,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:54:50,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-10-13 21:54:50,635 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933174644] [2019-10-13 21:54:50,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:54:50,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:54:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:54:50,636 INFO L87 Difference]: Start difference. First operand 1372 states and 2424 transitions. Second operand 5 states. [2019-10-13 21:54:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:52,482 INFO L93 Difference]: Finished difference Result 3452 states and 6233 transitions. [2019-10-13 21:54:52,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:54:52,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 21:54:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:52,497 INFO L225 Difference]: With dead ends: 3452 [2019-10-13 21:54:52,497 INFO L226 Difference]: Without dead ends: 2085 [2019-10-13 21:54:52,501 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:54:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2019-10-13 21:54:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2039. [2019-10-13 21:54:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2019-10-13 21:54:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3115 transitions. [2019-10-13 21:54:52,564 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3115 transitions. Word has length 38 [2019-10-13 21:54:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:52,565 INFO L462 AbstractCegarLoop]: Abstraction has 2039 states and 3115 transitions. [2019-10-13 21:54:52,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:54:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3115 transitions. [2019-10-13 21:54:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 21:54:52,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:52,568 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:54:52,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:52,781 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1184598050, now seen corresponding path program 1 times [2019-10-13 21:54:52,782 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:52,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996340662] [2019-10-13 21:54:52,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:52,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:52,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:54:52,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996340662] [2019-10-13 21:54:52,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958442216] [2019-10-13 21:54:52,930 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 21:54:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:53,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:54:53,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:54:53,149 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:54:53,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1454556551] [2019-10-13 21:54:53,248 INFO L162 IcfgInterpreter]: Started Sifa with 39 locations of interest [2019-10-13 21:54:53,249 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:54:53,253 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:54:53,259 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:54:53,260 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:54:53,484 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 55 for LOIs [2019-10-13 21:54:53,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 39 [2019-10-13 21:54:53,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 39 [2019-10-13 21:54:54,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2019-10-13 21:54:54,133 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2019-10-13 21:54:54,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:54,440 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: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: 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: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 21:54:54,448 INFO L168 Benchmark]: Toolchain (without parser) took 39095.23 ms. Allocated memory was 149.9 MB in the beginning and 404.8 MB in the end (delta: 254.8 MB). Free memory was 103.6 MB in the beginning and 290.1 MB in the end (delta: -186.5 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:54,449 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.9 MB. Free memory was 126.3 MB in the beginning and 126.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:54:54,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1178.14 ms. Allocated memory was 149.9 MB in the beginning and 207.1 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 130.7 MB in the end (delta: -27.5 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:54,451 INFO L168 Benchmark]: Boogie Preprocessor took 191.04 ms. Allocated memory is still 207.1 MB. Free memory was 130.7 MB in the beginning and 120.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:54,452 INFO L168 Benchmark]: RCFGBuilder took 23461.13 ms. Allocated memory was 207.1 MB in the beginning and 298.8 MB in the end (delta: 91.8 MB). Free memory was 120.3 MB in the beginning and 142.9 MB in the end (delta: -22.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:54,453 INFO L168 Benchmark]: TraceAbstraction took 14259.66 ms. Allocated memory was 298.8 MB in the beginning and 404.8 MB in the end (delta: 105.9 MB). Free memory was 142.9 MB in the beginning and 290.1 MB in the end (delta: -147.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:54:54,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 149.9 MB. Free memory was 126.3 MB in the beginning and 126.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1178.14 ms. Allocated memory was 149.9 MB in the beginning and 207.1 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 130.7 MB in the end (delta: -27.5 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.04 ms. Allocated memory is still 207.1 MB. Free memory was 130.7 MB in the beginning and 120.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 23461.13 ms. Allocated memory was 207.1 MB in the beginning and 298.8 MB in the end (delta: 91.8 MB). Free memory was 120.3 MB in the beginning and 142.9 MB in the end (delta: -22.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14259.66 ms. Allocated memory was 298.8 MB in the beginning and 404.8 MB in the end (delta: 105.9 MB). Free memory was 142.9 MB in the beginning and 290.1 MB in the end (delta: -147.2 MB). There was no memory consumed. 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:307) RESULT: Ultimate could not prove your program: Toolchain returned no result.