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 0.1.24-36ac518-m [2019-10-07 03:30:16,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:16,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:16,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:30:16,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:30:16,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:30:16,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:30:16,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:30:16,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:30:16,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:30:16,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:30:16,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:30:16,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:16,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:16,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:16,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:16,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:16,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:16,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:16,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:16,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:16,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:16,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:16,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:16,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:30:16,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:30:16,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:30:16,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:30:16,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:30:16,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:30:16,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:30:16,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:30:16,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:30:16,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:30:16,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:30:16,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:30:16,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:30:16,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:30:16,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:16,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:16,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:16,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:30:16,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:16,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:16,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:16,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:16,308 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:16,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:16,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:16,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:16,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:16,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:16,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:16,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:16,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:16,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:16,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:16,311 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:16,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:16,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:16,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:16,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:16,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:16,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:16,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:16,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:16,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:16,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:16,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:16,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:16,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:30:16,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:16,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:16,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:16,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:16,603 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:16,604 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-10-07 03:30:16,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a917d84/d256025ef406470ea462bed9d3672c6d/FLAGa52502c56 [2019-10-07 03:30:17,348 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:17,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2019-10-07 03:30:17,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a917d84/d256025ef406470ea462bed9d3672c6d/FLAGa52502c56 [2019-10-07 03:30:17,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a917d84/d256025ef406470ea462bed9d3672c6d [2019-10-07 03:30:17,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:17,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:17,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:17,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:17,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:17,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:17" (1/1) ... [2019-10-07 03:30:17,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4f9527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:17, skipping insertion in model container [2019-10-07 03:30:17,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:17" (1/1) ... [2019-10-07 03:30:17,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:17,612 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:18,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:18,477 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:18,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:18,909 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:18,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18 WrapperNode [2019-10-07 03:30:18,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:18,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:18,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:18,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:18,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:18,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:18,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:18,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:19,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:19,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:19,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... [2019-10-07 03:30:19,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:19,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:19,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:19,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:19,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:30:26,445 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:30:26,446 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:30:26,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:26 BoogieIcfgContainer [2019-10-07 03:30:26,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:30:26,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:30:26,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:30:26,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:30:26,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:17" (1/3) ... [2019-10-07 03:30:26,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab80b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:26, skipping insertion in model container [2019-10-07 03:30:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:18" (2/3) ... [2019-10-07 03:30:26,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ab80b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:26, skipping insertion in model container [2019-10-07 03:30:26,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:26" (3/3) ... [2019-10-07 03:30:26,461 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2019-10-07 03:30:26,471 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:30:26,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:30:26,492 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:30:26,522 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:30:26,522 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:30:26,523 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:30:26,523 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:30:26,523 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:30:26,523 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:30:26,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:30:26,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:30:26,549 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:30:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:30:26,556 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:26,557 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:26,559 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:26,565 INFO L82 PathProgramCache]: Analyzing trace with hash 648042605, now seen corresponding path program 1 times [2019-10-07 03:30:26,575 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:26,575 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:26,575 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:26,576 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:26,863 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:26,864 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:26,864 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:26,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:26,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:26,887 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:30:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:30,911 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:30:30,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:30,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:30:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:30,935 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:30:30,936 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:30:30,944 INFO L606 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 [2019-10-07 03:30:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:30:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 679. [2019-10-07 03:30:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-07 03:30:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1210 transitions. [2019-10-07 03:30:31,038 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1210 transitions. Word has length 11 [2019-10-07 03:30:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:31,038 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1210 transitions. [2019-10-07 03:30:31,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1210 transitions. [2019-10-07 03:30:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-07 03:30:31,040 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:31,041 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:31,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:31,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:31,042 INFO L82 PathProgramCache]: Analyzing trace with hash 958749736, now seen corresponding path program 1 times [2019-10-07 03:30:31,042 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:31,042 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:31,042 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:31,042 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:31,197 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:31,197 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:31,197 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:30:31,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:31,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:30:31,203 INFO L87 Difference]: Start difference. First operand 679 states and 1210 transitions. Second operand 5 states. [2019-10-07 03:30:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:37,539 INFO L93 Difference]: Finished difference Result 2059 states and 3710 transitions. [2019-10-07 03:30:37,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:30:37,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-07 03:30:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:37,550 INFO L225 Difference]: With dead ends: 2059 [2019-10-07 03:30:37,550 INFO L226 Difference]: Without dead ends: 1385 [2019-10-07 03:30:37,554 INFO L606 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 [2019-10-07 03:30:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-07 03:30:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1340. [2019-10-07 03:30:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-07 03:30:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2018 transitions. [2019-10-07 03:30:37,669 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2018 transitions. Word has length 24 [2019-10-07 03:30:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:37,670 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 2018 transitions. [2019-10-07 03:30:37,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2018 transitions. [2019-10-07 03:30:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-07 03:30:37,674 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:37,674 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:37,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1428301592, now seen corresponding path program 1 times [2019-10-07 03:30:37,676 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:37,676 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:37,677 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:37,677 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:37,903 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:37,903 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:37,903 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:37,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:37,907 INFO L87 Difference]: Start difference. First operand 1340 states and 2018 transitions. Second operand 4 states. [2019-10-07 03:30:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:44,386 INFO L93 Difference]: Finished difference Result 5319 states and 8187 transitions. [2019-10-07 03:30:44,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:44,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-07 03:30:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:44,411 INFO L225 Difference]: With dead ends: 5319 [2019-10-07 03:30:44,411 INFO L226 Difference]: Without dead ends: 3984 [2019-10-07 03:30:44,416 INFO L606 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 [2019-10-07 03:30:44,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2019-10-07 03:30:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 2857. [2019-10-07 03:30:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2857 states. [2019-10-07 03:30:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4264 transitions. [2019-10-07 03:30:44,506 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4264 transitions. Word has length 32 [2019-10-07 03:30:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:44,507 INFO L462 AbstractCegarLoop]: Abstraction has 2857 states and 4264 transitions. [2019-10-07 03:30:44,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4264 transitions. [2019-10-07 03:30:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 03:30:44,509 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:44,510 INFO L385 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] [2019-10-07 03:30:44,510 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1146619043, now seen corresponding path program 1 times [2019-10-07 03:30:44,511 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:44,511 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:44,511 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:44,511 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:44,619 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:44,619 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:44,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:30:44,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:44,774 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:44,854 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:30:44,893 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-07 03:30:44,893 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:30:44,898 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:30:44,906 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:30:44,907 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:30:45,212 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:30:45,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-07 03:30:45,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-07 03:30:45,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-07 03:30:46,021 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 12758 conjuctions. This might take some time... [2019-10-07 03:30:46,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-07 03:30:46,585 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 12758 conjuctions. This might take some time... [2019-10-07 03:30:46,905 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6561 conjuctions. This might take some time... [2019-10-07 03:30:53,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:53,790 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:30:53,800 INFO L168 Benchmark]: Toolchain (without parser) took 36280.63 ms. Allocated memory was 136.8 MB in the beginning and 772.3 MB in the end (delta: 635.4 MB). Free memory was 96.2 MB in the beginning and 222.2 MB in the end (delta: -126.0 MB). Peak memory consumption was 669.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,803 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1391.86 ms. Allocated memory was 136.8 MB in the beginning and 207.1 MB in the end (delta: 70.3 MB). Free memory was 96.0 MB in the beginning and 115.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,811 INFO L168 Benchmark]: Boogie Preprocessor took 212.90 ms. Allocated memory is still 207.1 MB. Free memory was 115.7 MB in the beginning and 103.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,814 INFO L168 Benchmark]: RCFGBuilder took 7325.02 ms. Allocated memory was 207.1 MB in the beginning and 309.3 MB in the end (delta: 102.2 MB). Free memory was 103.7 MB in the beginning and 85.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,815 INFO L168 Benchmark]: TraceAbstraction took 27346.11 ms. Allocated memory was 309.3 MB in the beginning and 772.3 MB in the end (delta: 462.9 MB). Free memory was 85.5 MB in the beginning and 222.2 MB in the end (delta: -136.8 MB). Peak memory consumption was 485.9 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:53,826 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1391.86 ms. Allocated memory was 136.8 MB in the beginning and 207.1 MB in the end (delta: 70.3 MB). Free memory was 96.0 MB in the beginning and 115.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 212.90 ms. Allocated memory is still 207.1 MB. Free memory was 115.7 MB in the beginning and 103.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7325.02 ms. Allocated memory was 207.1 MB in the beginning and 309.3 MB in the end (delta: 102.2 MB). Free memory was 103.7 MB in the beginning and 85.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27346.11 ms. Allocated memory was 309.3 MB in the beginning and 772.3 MB in the end (delta: 462.9 MB). Free memory was 85.5 MB in the beginning and 222.2 MB in the end (delta: -136.8 MB). Peak memory consumption was 485.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...