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/Problem12_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:40:12,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:40:12,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:40:12,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 02:40:12,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 02:40:12,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 02:40:12,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 02:40:12,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 02:40:12,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 02:40:12,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 02:40:12,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 02:40:12,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 02:40:12,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:40:12,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:40:12,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:40:12,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:40:12,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:40:12,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:40:12,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:40:12,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:40:12,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:40:12,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:40:12,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:40:12,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:40:12,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:40:12,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:40:12,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:40:12,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:40:12,364 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 02:40:12,385 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:40:12,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:40:12,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:40:12,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:40:12,388 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:40:12,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:40:12,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:40:12,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:40:12,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:40:12,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:40:12,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:40:12,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:40:12,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:40:12,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:40:12,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:40:12,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:40:12,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:40:12,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:40:12,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:40:12,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:40:12,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:40:12,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:40:12,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:40:12,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:40:12,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:40:12,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:40:12,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:40:12,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:40:12,394 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 02:40:12,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:40:12,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:40:12,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:40:12,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:40:12,699 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:40:12,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-07 02:40:12,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16e7a577/410f05d7016d42d7b5cdca1882133dac/FLAGafa4099ed [2019-10-07 02:40:13,571 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:40:13,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-10-07 02:40:13,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16e7a577/410f05d7016d42d7b5cdca1882133dac/FLAGafa4099ed [2019-10-07 02:40:13,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16e7a577/410f05d7016d42d7b5cdca1882133dac [2019-10-07 02:40:13,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:40:13,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:40:13,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:40:13,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:40:13,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:40:13,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:40:13" (1/1) ... [2019-10-07 02:40:13,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ca977a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:13, skipping insertion in model container [2019-10-07 02:40:13,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:40:13" (1/1) ... [2019-10-07 02:40:13,660 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:40:13,805 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:40:15,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:40:15,246 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:40:16,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:40:16,038 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:40:16,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16 WrapperNode [2019-10-07 02:40:16,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:40:16,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:40:16,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:40:16,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:40:16,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... [2019-10-07 02:40:16,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:40:16,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:40:16,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:40:16,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:40:16,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:40:16,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:40:16,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:40:16,390 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:40:16,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:40:16,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:40:16,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:40:16,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:40:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:40:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:40:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:40:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:40:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:40:23,228 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:40:23,229 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:40:23,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:40:23 BoogieIcfgContainer [2019-10-07 02:40:23,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:40:23,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:40:23,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:40:23,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:40:23,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:40:13" (1/3) ... [2019-10-07 02:40:23,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ea1bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:40:23, skipping insertion in model container [2019-10-07 02:40:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:40:16" (2/3) ... [2019-10-07 02:40:23,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ea1bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:40:23, skipping insertion in model container [2019-10-07 02:40:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:40:23" (3/3) ... [2019-10-07 02:40:23,240 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-10-07 02:40:23,251 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:40:23,260 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:40:23,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:40:23,306 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:40:23,306 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:40:23,306 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:40:23,307 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:40:23,307 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:40:23,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:40:23,307 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:40:23,307 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:40:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:40:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:40:23,347 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:23,348 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:40:23,350 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash -874903730, now seen corresponding path program 1 times [2019-10-07 02:40:23,365 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:23,365 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:23,366 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:23,366 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:23,666 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 02:40:23,667 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:23,667 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:40:23,667 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:40:23,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:40:23,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:40:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:40:23,689 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:40:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:28,552 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:40:28,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:40:28,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:40:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:28,584 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:40:28,585 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:40:28,594 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:40:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:40:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2019-10-07 02:40:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-07 02:40:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2530 transitions. [2019-10-07 02:40:28,730 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2530 transitions. Word has length 11 [2019-10-07 02:40:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:28,730 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 2530 transitions. [2019-10-07 02:40:28,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:40:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2530 transitions. [2019-10-07 02:40:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 02:40:28,733 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:28,733 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] [2019-10-07 02:40:28,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:28,734 INFO L82 PathProgramCache]: Analyzing trace with hash -890514439, now seen corresponding path program 1 times [2019-10-07 02:40:28,734 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:28,734 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:28,734 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:28,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:28,899 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 02:40:28,900 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:28,900 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:40:28,900 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:40:28,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:40:28,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:40:28,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:40:28,906 INFO L87 Difference]: Start difference. First operand 1368 states and 2530 transitions. Second operand 5 states. [2019-10-07 02:40:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:35,429 INFO L93 Difference]: Finished difference Result 4145 states and 7711 transitions. [2019-10-07 02:40:35,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:40:35,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-07 02:40:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:35,448 INFO L225 Difference]: With dead ends: 4145 [2019-10-07 02:40:35,448 INFO L226 Difference]: Without dead ends: 2782 [2019-10-07 02:40:35,452 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 02:40:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2019-10-07 02:40:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2758. [2019-10-07 02:40:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2019-10-07 02:40:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4886 transitions. [2019-10-07 02:40:35,564 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4886 transitions. Word has length 25 [2019-10-07 02:40:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:35,564 INFO L462 AbstractCegarLoop]: Abstraction has 2758 states and 4886 transitions. [2019-10-07 02:40:35,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:40:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4886 transitions. [2019-10-07 02:40:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 02:40:35,566 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:35,567 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] [2019-10-07 02:40:35,568 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash 394645502, now seen corresponding path program 1 times [2019-10-07 02:40:35,569 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:35,569 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:35,570 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:35,570 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:35,695 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 02:40:35,695 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:35,695 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:40:35,696 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:40:35,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:40:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:40:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:40:35,697 INFO L87 Difference]: Start difference. First operand 2758 states and 4886 transitions. Second operand 6 states. [2019-10-07 02:40:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:42,418 INFO L93 Difference]: Finished difference Result 8359 states and 15059 transitions. [2019-10-07 02:40:42,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:40:42,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-07 02:40:42,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:42,479 INFO L225 Difference]: With dead ends: 8359 [2019-10-07 02:40:42,479 INFO L226 Difference]: Without dead ends: 5606 [2019-10-07 02:40:42,491 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:40:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2019-10-07 02:40:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5517. [2019-10-07 02:40:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-07 02:40:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 9731 transitions. [2019-10-07 02:40:42,772 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 9731 transitions. Word has length 30 [2019-10-07 02:40:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:42,773 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 9731 transitions. [2019-10-07 02:40:42,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:40:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 9731 transitions. [2019-10-07 02:40:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 02:40:42,775 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:42,776 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:40:42,776 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1486759570, now seen corresponding path program 1 times [2019-10-07 02:40:42,777 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:42,777 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:42,777 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:42,777 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:42,938 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 02:40:42,938 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:42,939 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:40:42,939 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:40:42,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:40:42,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:40:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:40:42,941 INFO L87 Difference]: Start difference. First operand 5517 states and 9731 transitions. Second operand 6 states. [2019-10-07 02:40:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:48,841 INFO L93 Difference]: Finished difference Result 14605 states and 26403 transitions. [2019-10-07 02:40:48,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:40:48,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-07 02:40:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:48,899 INFO L225 Difference]: With dead ends: 14605 [2019-10-07 02:40:48,900 INFO L226 Difference]: Without dead ends: 9093 [2019-10-07 02:40:48,917 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:40:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2019-10-07 02:40:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8976. [2019-10-07 02:40:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8976 states. [2019-10-07 02:40:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 15454 transitions. [2019-10-07 02:40:49,190 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 15454 transitions. Word has length 38 [2019-10-07 02:40:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:49,191 INFO L462 AbstractCegarLoop]: Abstraction has 8976 states and 15454 transitions. [2019-10-07 02:40:49,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:40:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 15454 transitions. [2019-10-07 02:40:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-07 02:40:49,206 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:49,207 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:40:49,207 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash 830824573, now seen corresponding path program 1 times [2019-10-07 02:40:49,208 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:49,208 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:49,208 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:49,209 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:49,384 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 02:40:49,385 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:49,385 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:40:49,385 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 02:40:49,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 02:40:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 02:40:49,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 02:40:49,387 INFO L87 Difference]: Start difference. First operand 8976 states and 15454 transitions. Second operand 6 states. [2019-10-07 02:40:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:55,537 INFO L93 Difference]: Finished difference Result 23039 states and 40914 transitions. [2019-10-07 02:40:55,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:40:55,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-07 02:40:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:55,611 INFO L225 Difference]: With dead ends: 23039 [2019-10-07 02:40:55,611 INFO L226 Difference]: Without dead ends: 14068 [2019-10-07 02:40:55,639 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:40:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14068 states. [2019-10-07 02:40:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14068 to 13977. [2019-10-07 02:40:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13977 states. [2019-10-07 02:40:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13977 states to 13977 states and 22599 transitions. [2019-10-07 02:40:56,010 INFO L78 Accepts]: Start accepts. Automaton has 13977 states and 22599 transitions. Word has length 71 [2019-10-07 02:40:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:56,012 INFO L462 AbstractCegarLoop]: Abstraction has 13977 states and 22599 transitions. [2019-10-07 02:40:56,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 02:40:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13977 states and 22599 transitions. [2019-10-07 02:40:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 02:40:56,016 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:56,017 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:40:56,017 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1276993852, now seen corresponding path program 1 times [2019-10-07 02:40:56,018 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:56,018 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:56,018 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:56,018 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:40:56,210 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:56,211 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:40:56,211 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 02:40:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:56,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 02:40:56,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:40:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 02:40:56,471 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:40:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 02:40:56,597 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 02:40:56,597 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2019-10-07 02:40:56,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 02:40:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 02:40:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-07 02:40:56,599 INFO L87 Difference]: Start difference. First operand 13977 states and 22599 transitions. Second operand 8 states. [2019-10-07 02:41:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:41:08,631 INFO L93 Difference]: Finished difference Result 48801 states and 83468 transitions. [2019-10-07 02:41:08,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 02:41:08,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2019-10-07 02:41:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:41:08,831 INFO L225 Difference]: With dead ends: 48801 [2019-10-07 02:41:08,832 INFO L226 Difference]: Without dead ends: 34829 [2019-10-07 02:41:08,923 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2019-10-07 02:41:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34829 states. [2019-10-07 02:41:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34829 to 33008. [2019-10-07 02:41:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33008 states. [2019-10-07 02:41:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33008 states to 33008 states and 49107 transitions. [2019-10-07 02:41:11,042 INFO L78 Accepts]: Start accepts. Automaton has 33008 states and 49107 transitions. Word has length 87 [2019-10-07 02:41:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:41:11,043 INFO L462 AbstractCegarLoop]: Abstraction has 33008 states and 49107 transitions. [2019-10-07 02:41:11,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 02:41:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33008 states and 49107 transitions. [2019-10-07 02:41:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-07 02:41:11,050 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:41:11,050 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:41:11,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:41:11,255 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:41:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:41:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1985138948, now seen corresponding path program 1 times [2019-10-07 02:41:11,256 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:41:11,256 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:41:11,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:41:11,258 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:41:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:41:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:41:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:41:11,378 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:41:11,378 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:41:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:41:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:41:11,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:41:11,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:41:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:41:11,554 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:41:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:41:11,631 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:41:11,632 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 02:41:11,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:41:11,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:41:11,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-07 02:41:11,634 INFO L87 Difference]: Start difference. First operand 33008 states and 49107 transitions. Second operand 5 states. [2019-10-07 02:41:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:41:19,294 INFO L93 Difference]: Finished difference Result 91297 states and 143073 transitions. [2019-10-07 02:41:19,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:41:19,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2019-10-07 02:41:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:41:19,551 INFO L225 Difference]: With dead ends: 91297 [2019-10-07 02:41:19,552 INFO L226 Difference]: Without dead ends: 58294 [2019-10-07 02:41:19,640 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:41:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58294 states. [2019-10-07 02:41:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58294 to 50605. [2019-10-07 02:41:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50605 states. [2019-10-07 02:41:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50605 states to 50605 states and 74975 transitions. [2019-10-07 02:41:22,200 INFO L78 Accepts]: Start accepts. Automaton has 50605 states and 74975 transitions. Word has length 91 [2019-10-07 02:41:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:41:22,201 INFO L462 AbstractCegarLoop]: Abstraction has 50605 states and 74975 transitions. [2019-10-07 02:41:22,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:41:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 50605 states and 74975 transitions. [2019-10-07 02:41:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-07 02:41:22,221 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:41:22,221 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 02:41:22,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:41:22,427 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:41:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:41:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 10791125, now seen corresponding path program 1 times [2019-10-07 02:41:22,428 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:41:22,429 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:41:22,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:41:22,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:41:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:41:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:41:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-07 02:41:22,601 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:41:22,601 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:41:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:41:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:41:22,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:41:22,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:41:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 02:41:22,824 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:41:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-07 02:41:22,907 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:41:22,937 INFO L162 IcfgInterpreter]: Started Sifa with 67 locations of interest [2019-10-07 02:41:22,937 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:41:22,943 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:41:22,952 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:41:22,952 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:41:23,104 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 59 for LOIs [2019-10-07 02:41:23,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 58 [2019-10-07 02:41:23,848 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 58 [2019-10-07 02:41:24,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:41:24,270 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 02:41:24,278 INFO L168 Benchmark]: Toolchain (without parser) took 70635.60 ms. Allocated memory was 137.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 89.6 MB in the beginning and 822.4 MB in the end (delta: -732.7 MB). Peak memory consumption was 452.7 MB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,281 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2397.72 ms. Allocated memory was 137.9 MB in the beginning and 261.1 MB in the end (delta: 123.2 MB). Free memory was 89.4 MB in the beginning and 190.0 MB in the end (delta: -100.6 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,289 INFO L168 Benchmark]: Boogie Preprocessor took 273.87 ms. Allocated memory is still 261.1 MB. Free memory was 190.0 MB in the beginning and 162.6 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,292 INFO L168 Benchmark]: RCFGBuilder took 6916.52 ms. Allocated memory was 261.1 MB in the beginning and 419.4 MB in the end (delta: 158.3 MB). Free memory was 162.6 MB in the beginning and 336.0 MB in the end (delta: -173.4 MB). Peak memory consumption was 274.1 MB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,293 INFO L168 Benchmark]: TraceAbstraction took 61042.28 ms. Allocated memory was 419.4 MB in the beginning and 1.3 GB in the end (delta: 903.9 MB). Free memory was 336.0 MB in the beginning and 822.4 MB in the end (delta: -486.3 MB). Peak memory consumption was 417.5 MB. Max. memory is 7.1 GB. [2019-10-07 02:41:24,309 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2397.72 ms. Allocated memory was 137.9 MB in the beginning and 261.1 MB in the end (delta: 123.2 MB). Free memory was 89.4 MB in the beginning and 190.0 MB in the end (delta: -100.6 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 273.87 ms. Allocated memory is still 261.1 MB. Free memory was 190.0 MB in the beginning and 162.6 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6916.52 ms. Allocated memory was 261.1 MB in the beginning and 419.4 MB in the end (delta: 158.3 MB). Free memory was 162.6 MB in the beginning and 336.0 MB in the end (delta: -173.4 MB). Peak memory consumption was 274.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 61042.28 ms. Allocated memory was 419.4 MB in the beginning and 1.3 GB in the end (delta: 903.9 MB). Free memory was 336.0 MB in the beginning and 822.4 MB in the end (delta: -486.3 MB). Peak memory consumption was 417.5 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...