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/Problem15_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:21,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:21,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:21,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:21,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:21,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:21,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:21,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:21,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:21,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:21,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:21,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:21,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:21,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:21,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:21,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:21,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:21,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:21,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:21,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:21,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:21,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:21,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:21,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:21,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:52:21,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:52:21,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:52:21,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:52:21,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:52:21,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:52:21,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:52:21,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:52:21,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:52:21,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:52:21,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:52:21,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:52:21,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:52:21,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:52:21,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:21,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:21,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:21,667 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 21:52:21,699 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:21,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:21,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:21,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:21,703 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:21,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:21,704 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:21,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:21,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:21,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:21,706 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:21,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:21,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:21,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:21,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:21,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:21,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:21,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:21,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:21,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:21,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:21,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:21,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:21,711 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 21:52:22,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:22,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:22,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:22,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:22,029 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:22,029 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-10-13 21:52:22,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1393e72/7a02ea2585e5458ea90741008d178144/FLAG869e012fe [2019-10-13 21:52:22,762 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:22,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-10-13 21:52:22,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1393e72/7a02ea2585e5458ea90741008d178144/FLAG869e012fe [2019-10-13 21:52:22,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1393e72/7a02ea2585e5458ea90741008d178144 [2019-10-13 21:52:22,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:23,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:23,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:23,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:23,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:23,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:22" (1/1) ... [2019-10-13 21:52:23,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f0ea79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:23, skipping insertion in model container [2019-10-13 21:52:23,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:22" (1/1) ... [2019-10-13 21:52:23,013 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:23,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:24,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:24,020 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:52:24,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:24,286 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:52:24,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24 WrapperNode [2019-10-13 21:52:24,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:24,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:52:24,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:52:24,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:52:24,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (1/1) ... [2019-10-13 21:52:24,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:52:24,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:52:24,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:52:24,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:52:24,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (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 21:52:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:52:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:52:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:52:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:52:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:52:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:52:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:52:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:52:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:52:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:52:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:52:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:52:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:52:31,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:52:31,655 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:52:31,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:31 BoogieIcfgContainer [2019-10-13 21:52:31,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:52:31,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:52:31,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:52:31,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:52:31,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:22" (1/3) ... [2019-10-13 21:52:31,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf3cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:31, skipping insertion in model container [2019-10-13 21:52:31,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:24" (2/3) ... [2019-10-13 21:52:31,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf3cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:31, skipping insertion in model container [2019-10-13 21:52:31,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:31" (3/3) ... [2019-10-13 21:52:31,666 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2019-10-13 21:52:31,676 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:52:31,684 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:52:31,696 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:52:31,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:52:31,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:52:31,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:52:31,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:52:31,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:52:31,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:52:31,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:52:31,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:52:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:52:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:52:31,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:31,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:31,762 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 648042605, now seen corresponding path program 1 times [2019-10-13 21:52:31,778 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:31,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649964430] [2019-10-13 21:52:31,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:31,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:31,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:32,010 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 21:52:32,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649964430] [2019-10-13 21:52:32,012 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:32,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:32,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66560100] [2019-10-13 21:52:32,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:32,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:32,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:32,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:32,095 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:52:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:40,793 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:52:40,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:40,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:52:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:40,818 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:52:40,818 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:52:40,827 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 21:52:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:52:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 679. [2019-10-13 21:52:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 21:52:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1210 transitions. [2019-10-13 21:52:40,922 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1210 transitions. Word has length 11 [2019-10-13 21:52:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:40,922 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1210 transitions. [2019-10-13 21:52:40,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1210 transitions. [2019-10-13 21:52:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:52:40,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:40,925 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:40,926 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash 958749736, now seen corresponding path program 1 times [2019-10-13 21:52:40,926 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:40,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978684174] [2019-10-13 21:52:40,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:40,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:40,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:41,083 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 21:52:41,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978684174] [2019-10-13 21:52:41,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:41,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:52:41,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316996904] [2019-10-13 21:52:41,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:52:41,087 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:52:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:52:41,087 INFO L87 Difference]: Start difference. First operand 679 states and 1210 transitions. Second operand 5 states. [2019-10-13 21:52:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:45,634 INFO L93 Difference]: Finished difference Result 2059 states and 3710 transitions. [2019-10-13 21:52:45,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:52:45,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-13 21:52:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:45,648 INFO L225 Difference]: With dead ends: 2059 [2019-10-13 21:52:45,648 INFO L226 Difference]: Without dead ends: 1385 [2019-10-13 21:52:45,655 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:52:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-13 21:52:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1340. [2019-10-13 21:52:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:52:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2018 transitions. [2019-10-13 21:52:45,805 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2018 transitions. Word has length 24 [2019-10-13 21:52:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:45,806 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 2018 transitions. [2019-10-13 21:52:45,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:52:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2018 transitions. [2019-10-13 21:52:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:52:45,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:45,807 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:45,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1428301592, now seen corresponding path program 1 times [2019-10-13 21:52:45,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:45,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339413464] [2019-10-13 21:52:45,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:45,983 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 21:52:45,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339413464] [2019-10-13 21:52:45,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:45,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:45,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502067749] [2019-10-13 21:52:45,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:45,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:45,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:45,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:45,987 INFO L87 Difference]: Start difference. First operand 1340 states and 2018 transitions. Second operand 4 states. [2019-10-13 21:52:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:51,049 INFO L93 Difference]: Finished difference Result 5319 states and 8187 transitions. [2019-10-13 21:52:51,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:51,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-13 21:52:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:51,075 INFO L225 Difference]: With dead ends: 5319 [2019-10-13 21:52:51,083 INFO L226 Difference]: Without dead ends: 3984 [2019-10-13 21:52:51,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 21:52:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2019-10-13 21:52:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 2857. [2019-10-13 21:52:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2857 states. [2019-10-13 21:52:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4264 transitions. [2019-10-13 21:52:51,194 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4264 transitions. Word has length 32 [2019-10-13 21:52:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:51,194 INFO L462 AbstractCegarLoop]: Abstraction has 2857 states and 4264 transitions. [2019-10-13 21:52:51,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4264 transitions. [2019-10-13 21:52:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 21:52:51,199 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:51,200 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:52:51,200 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:51,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1146619043, now seen corresponding path program 1 times [2019-10-13 21:52:51,201 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:51,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970189196] [2019-10-13 21:52:51,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:51,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:51,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:51,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970189196] [2019-10-13 21:52:51,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146504241] [2019-10-13 21:52:51,317 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 21:52:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:51,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:52:51,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:52:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:51,487 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:52:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:51,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [511875226] [2019-10-13 21:52:51,612 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-13 21:52:51,612 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:52:51,619 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:52:51,632 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:52:51,633 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:52:51,860 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-13 21:52:51,993 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-13 21:52:52,012 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-13 21:52:52,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-13 21:52:52,599 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8389 conjuctions. This might take some time... [2019-10-13 21:52:52,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-13 21:52:53,086 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8389 conjuctions. This might take some time... [2019-10-13 21:52:54,746 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:54,749 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 21:52:54,756 INFO L168 Benchmark]: Toolchain (without parser) took 31754.25 ms. Allocated memory was 137.9 MB in the beginning and 553.6 MB in the end (delta: 415.8 MB). Free memory was 97.2 MB in the beginning and 433.0 MB in the end (delta: -335.7 MB). Peak memory consumption was 446.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,757 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1286.66 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 97.0 MB in the beginning and 111.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,758 INFO L168 Benchmark]: Boogie Preprocessor took 195.54 ms. Allocated memory is still 203.9 MB. Free memory was 111.4 MB in the beginning and 99.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,760 INFO L168 Benchmark]: RCFGBuilder took 7173.54 ms. Allocated memory was 203.9 MB in the beginning and 313.5 MB in the end (delta: 109.6 MB). Free memory was 98.3 MB in the beginning and 87.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,761 INFO L168 Benchmark]: TraceAbstraction took 23094.50 ms. Allocated memory was 313.5 MB in the beginning and 553.6 MB in the end (delta: 240.1 MB). Free memory was 87.7 MB in the beginning and 433.0 MB in the end (delta: -345.3 MB). Peak memory consumption was 261.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:54,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1286.66 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 97.0 MB in the beginning and 111.4 MB in the end (delta: -14.4 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.54 ms. Allocated memory is still 203.9 MB. Free memory was 111.4 MB in the beginning and 99.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7173.54 ms. Allocated memory was 203.9 MB in the beginning and 313.5 MB in the end (delta: 109.6 MB). Free memory was 98.3 MB in the beginning and 87.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23094.50 ms. Allocated memory was 313.5 MB in the beginning and 553.6 MB in the end (delta: 240.1 MB). Free memory was 87.7 MB in the beginning and 433.0 MB in the end (delta: -345.3 MB). Peak memory consumption was 261.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...