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/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:34:47,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:34:47,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:34:47,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:34:47,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:34:47,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:34:47,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:34:47,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:34:47,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:34:47,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:34:47,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:34:47,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:34:47,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:34:47,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:34:47,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:34:47,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:34:47,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:34:47,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:34:47,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:34:47,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:34:47,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:34:47,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:34:47,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:34:47,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:34:47,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:34:47,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:34:47,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:34:47,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:34:47,315 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 03:34:47,330 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:34:47,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:34:47,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:34:47,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:34:47,332 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:34:47,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:34:47,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:34:47,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:34:47,334 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:34:47,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:34:47,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:34:47,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:34:47,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:34:47,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:34:47,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:34:47,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:34:47,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:34:47,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:34:47,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:34:47,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:34:47,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:34:47,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:34:47,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:34:47,337 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 03:34:47,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:34:47,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:34:47,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:34:47,647 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:34:47,647 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:34:47,648 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2019-10-07 03:34:47,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d2b51b4/d2d149b916724843baadbb7916d664f3/FLAGdce82a6dd [2019-10-07 03:34:48,491 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:34:48,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2019-10-07 03:34:48,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d2b51b4/d2d149b916724843baadbb7916d664f3/FLAGdce82a6dd [2019-10-07 03:34:48,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d2b51b4/d2d149b916724843baadbb7916d664f3 [2019-10-07 03:34:48,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:34:48,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:34:48,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:34:48,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:34:48,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:34:48,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:34:48" (1/1) ... [2019-10-07 03:34:48,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:48, skipping insertion in model container [2019-10-07 03:34:48,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:34:48" (1/1) ... [2019-10-07 03:34:48,607 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:34:48,741 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:34:50,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:34:50,220 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:34:50,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:34:50,693 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:34:50,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50 WrapperNode [2019-10-07 03:34:50,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:34:50,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:34:50,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:34:50,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:34:50,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (1/1) ... [2019-10-07 03:34:50,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:34:50,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:34:50,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:34:50,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:34:50,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (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 03:34:51,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:34:51,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:34:51,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:34:51,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:34:51,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:34:51,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:34:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:34:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:34:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:34:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:34:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:34:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:34:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:34:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:34:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:36:16,078 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:36:16,078 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:36:16,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:36:16 BoogieIcfgContainer [2019-10-07 03:36:16,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:36:16,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:36:16,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:36:16,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:36:16,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:34:48" (1/3) ... [2019-10-07 03:36:16,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ff9b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:36:16, skipping insertion in model container [2019-10-07 03:36:16,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:34:50" (2/3) ... [2019-10-07 03:36:16,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ff9b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:36:16, skipping insertion in model container [2019-10-07 03:36:16,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:36:16" (3/3) ... [2019-10-07 03:36:16,089 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2019-10-07 03:36:16,099 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:36:16,108 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:36:16,119 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:36:16,152 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:36:16,152 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:36:16,152 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:36:16,153 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:36:16,153 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:36:16,153 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:36:16,153 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:36:16,153 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:36:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:36:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:36:16,190 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:16,191 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:36:16,193 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:16,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:16,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1816960678, now seen corresponding path program 1 times [2019-10-07 03:36:16,209 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:16,209 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:16,209 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:16,210 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:16,404 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 03:36:16,405 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:16,405 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:36:16,406 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:36:16,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:36:16,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:36:16,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:36:16,427 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:36:19,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:19,982 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:36:19,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:36:19,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:36:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:20,012 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:36:20,012 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:36:20,024 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 03:36:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:36:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 890. [2019-10-07 03:36:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2019-10-07 03:36:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1719 transitions. [2019-10-07 03:36:20,132 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1719 transitions. Word has length 11 [2019-10-07 03:36:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:20,133 INFO L462 AbstractCegarLoop]: Abstraction has 890 states and 1719 transitions. [2019-10-07 03:36:20,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:36:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1719 transitions. [2019-10-07 03:36:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 03:36:20,135 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:20,137 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] [2019-10-07 03:36:20,137 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 709316941, now seen corresponding path program 1 times [2019-10-07 03:36:20,138 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:20,138 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:20,138 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:20,139 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:20,342 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 03:36:20,342 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:20,343 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:36:20,343 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:36:20,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:36:20,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:36:20,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:36:20,345 INFO L87 Difference]: Start difference. First operand 890 states and 1719 transitions. Second operand 6 states. [2019-10-07 03:36:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:24,027 INFO L93 Difference]: Finished difference Result 2694 states and 5243 transitions. [2019-10-07 03:36:24,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:36:24,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-07 03:36:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:24,043 INFO L225 Difference]: With dead ends: 2694 [2019-10-07 03:36:24,043 INFO L226 Difference]: Without dead ends: 1809 [2019-10-07 03:36:24,047 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 03:36:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2019-10-07 03:36:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1789. [2019-10-07 03:36:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2019-10-07 03:36:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 3102 transitions. [2019-10-07 03:36:26,723 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 3102 transitions. Word has length 26 [2019-10-07 03:36:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:26,723 INFO L462 AbstractCegarLoop]: Abstraction has 1789 states and 3102 transitions. [2019-10-07 03:36:26,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:36:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 3102 transitions. [2019-10-07 03:36:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:36:26,725 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:26,726 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:36:26,727 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash 651439265, now seen corresponding path program 1 times [2019-10-07 03:36:26,732 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:26,732 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:26,733 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:26,733 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:36:26,865 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:26,866 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:36:26,866 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 03:36:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:26,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:36:26,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:36:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:36:27,059 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:36:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:36:27,130 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:36:27,130 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 03:36:27,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:36:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:36:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:36:27,132 INFO L87 Difference]: Start difference. First operand 1789 states and 3102 transitions. Second operand 5 states. [2019-10-07 03:36:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:33,106 INFO L93 Difference]: Finished difference Result 5420 states and 9628 transitions. [2019-10-07 03:36:33,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:36:33,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:36:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:33,138 INFO L225 Difference]: With dead ends: 5420 [2019-10-07 03:36:33,139 INFO L226 Difference]: Without dead ends: 3636 [2019-10-07 03:36:33,146 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:36:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2019-10-07 03:36:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3580. [2019-10-07 03:36:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2019-10-07 03:36:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 6079 transitions. [2019-10-07 03:36:33,306 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 6079 transitions. Word has length 38 [2019-10-07 03:36:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:33,307 INFO L462 AbstractCegarLoop]: Abstraction has 3580 states and 6079 transitions. [2019-10-07 03:36:33,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:36:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 6079 transitions. [2019-10-07 03:36:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:36:33,310 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:33,310 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 03:36:33,515 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:33,519 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash 957855989, now seen corresponding path program 1 times [2019-10-07 03:36:33,519 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:33,519 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:33,520 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:33,520 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:33,624 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 03:36:33,624 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:33,625 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:36:33,625 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:36:33,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:36:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:36:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:36:33,626 INFO L87 Difference]: Start difference. First operand 3580 states and 6079 transitions. Second operand 6 states. [2019-10-07 03:36:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:37,775 INFO L93 Difference]: Finished difference Result 8533 states and 14580 transitions. [2019-10-07 03:36:37,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:36:37,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-07 03:36:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:37,804 INFO L225 Difference]: With dead ends: 8533 [2019-10-07 03:36:37,804 INFO L226 Difference]: Without dead ends: 4958 [2019-10-07 03:36:37,814 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 03:36:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2019-10-07 03:36:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 3956. [2019-10-07 03:36:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3956 states. [2019-10-07 03:36:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 6015 transitions. [2019-10-07 03:36:37,966 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 6015 transitions. Word has length 38 [2019-10-07 03:36:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:37,967 INFO L462 AbstractCegarLoop]: Abstraction has 3956 states and 6015 transitions. [2019-10-07 03:36:37,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:36:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 6015 transitions. [2019-10-07 03:36:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-07 03:36:37,977 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:37,977 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] [2019-10-07 03:36:37,977 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1939710538, now seen corresponding path program 1 times [2019-10-07 03:36:37,978 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:37,978 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:37,978 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:37,979 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:36:38,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:38,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:36:38,169 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 03:36:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:38,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:36:38,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:36:38,265 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 03:36:38,265 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:36:38,297 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 03:36:38,297 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 03:36:38,298 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-07 03:36:38,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:36:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:36:38,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:36:38,299 INFO L87 Difference]: Start difference. First operand 3956 states and 6015 transitions. Second operand 4 states. [2019-10-07 03:36:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:42,473 INFO L93 Difference]: Finished difference Result 10106 states and 15323 transitions. [2019-10-07 03:36:42,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:36:42,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2019-10-07 03:36:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:42,503 INFO L225 Difference]: With dead ends: 10106 [2019-10-07 03:36:42,503 INFO L226 Difference]: Without dead ends: 6155 [2019-10-07 03:36:42,515 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:36:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2019-10-07 03:36:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 5254. [2019-10-07 03:36:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2019-10-07 03:36:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 7540 transitions. [2019-10-07 03:36:42,652 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 7540 transitions. Word has length 63 [2019-10-07 03:36:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:42,653 INFO L462 AbstractCegarLoop]: Abstraction has 5254 states and 7540 transitions. [2019-10-07 03:36:42,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:36:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 7540 transitions. [2019-10-07 03:36:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-07 03:36:42,657 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:42,657 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:36:42,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:42,864 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:42,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1460118546, now seen corresponding path program 1 times [2019-10-07 03:36:42,864 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:42,865 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:42,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:42,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:36:43,005 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:43,005 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:36:43,005 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 03:36:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:43,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:36:43,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:36:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 03:36:43,151 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:36:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:36:43,215 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:36:43,215 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2019-10-07 03:36:43,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:36:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:36:43,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:36:43,217 INFO L87 Difference]: Start difference. First operand 5254 states and 7540 transitions. Second operand 5 states. [2019-10-07 03:36:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:47,833 INFO L93 Difference]: Finished difference Result 15034 states and 21839 transitions. [2019-10-07 03:36:47,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:36:47,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-10-07 03:36:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:47,890 INFO L225 Difference]: With dead ends: 15034 [2019-10-07 03:36:47,891 INFO L226 Difference]: Without dead ends: 9785 [2019-10-07 03:36:47,908 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:36:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9785 states. [2019-10-07 03:36:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9785 to 8694. [2019-10-07 03:36:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8694 states. [2019-10-07 03:36:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8694 states to 8694 states and 11795 transitions. [2019-10-07 03:36:48,126 INFO L78 Accepts]: Start accepts. Automaton has 8694 states and 11795 transitions. Word has length 69 [2019-10-07 03:36:48,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:48,127 INFO L462 AbstractCegarLoop]: Abstraction has 8694 states and 11795 transitions. [2019-10-07 03:36:48,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:36:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 11795 transitions. [2019-10-07 03:36:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 03:36:48,132 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:48,132 INFO L385 BasicCegarLoop]: trace histogram [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, 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] [2019-10-07 03:36:48,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:48,346 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1494592265, now seen corresponding path program 1 times [2019-10-07 03:36:48,348 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:48,348 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:48,348 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:48,348 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:36:48,837 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:48,837 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:36:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:48,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 03:36:48,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:36:48,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 03:36:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:36:49,049 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:36:49,226 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2019-10-07 03:36:49,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:36:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:36:49,451 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:36:49,451 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2019-10-07 03:36:49,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:36:49,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:36:49,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 03:36:49,453 INFO L87 Difference]: Start difference. First operand 8694 states and 11795 transitions. Second operand 5 states. [2019-10-07 03:36:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:36:53,876 INFO L93 Difference]: Finished difference Result 20245 states and 27259 transitions. [2019-10-07 03:36:53,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:36:53,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2019-10-07 03:36:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:36:53,924 INFO L225 Difference]: With dead ends: 20245 [2019-10-07 03:36:53,924 INFO L226 Difference]: Without dead ends: 11556 [2019-10-07 03:36:53,945 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2019-10-07 03:36:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11556 states. [2019-10-07 03:36:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11556 to 11176. [2019-10-07 03:36:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11176 states. [2019-10-07 03:36:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11176 states to 11176 states and 14693 transitions. [2019-10-07 03:36:54,194 INFO L78 Accepts]: Start accepts. Automaton has 11176 states and 14693 transitions. Word has length 94 [2019-10-07 03:36:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:36:54,196 INFO L462 AbstractCegarLoop]: Abstraction has 11176 states and 14693 transitions. [2019-10-07 03:36:54,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:36:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11176 states and 14693 transitions. [2019-10-07 03:36:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 03:36:54,207 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:36:54,208 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:54,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:54,414 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:36:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:36:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash 492986289, now seen corresponding path program 1 times [2019-10-07 03:36:54,415 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:36:54,415 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:54,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:54,415 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:36:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:36:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 03:36:54,537 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:36:54,537 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:36:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:36:54,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:36:54,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:36:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:36:54,760 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:36:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 03:36:54,845 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:36:54,881 INFO L162 IcfgInterpreter]: Started Sifa with 70 locations of interest [2019-10-07 03:36:54,882 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:36:54,893 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:36:54,902 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:36:54,903 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:36:55,091 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-07 03:36:55,306 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2019-10-07 03:36:55,353 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2019-10-07 03:36:55,390 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 50 [2019-10-07 03:36:55,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 50 [2019-10-07 03:36:56,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:36:56,344 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 03:36:56,351 INFO L168 Benchmark]: Toolchain (without parser) took 127766.16 ms. Allocated memory was 145.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 92.4 MB in the beginning and 236.3 MB in the end (delta: -143.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,352 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2106.51 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 92.0 MB in the beginning and 118.3 MB in the end (delta: -26.3 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,354 INFO L168 Benchmark]: Boogie Preprocessor took 236.78 ms. Allocated memory is still 234.4 MB. Free memory was 118.3 MB in the beginning and 98.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,355 INFO L168 Benchmark]: RCFGBuilder took 85148.79 ms. Allocated memory was 234.4 MB in the beginning and 830.5 MB in the end (delta: 596.1 MB). Free memory was 98.1 MB in the beginning and 344.2 MB in the end (delta: -246.1 MB). Peak memory consumption was 667.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,356 INFO L168 Benchmark]: TraceAbstraction took 40266.88 ms. Allocated memory was 830.5 MB in the beginning and 1.3 GB in the end (delta: 461.4 MB). Free memory was 344.2 MB in the beginning and 236.3 MB in the end (delta: 107.9 MB). Peak memory consumption was 569.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:36:56,364 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 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2106.51 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 92.0 MB in the beginning and 118.3 MB in the end (delta: -26.3 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 236.78 ms. Allocated memory is still 234.4 MB. Free memory was 118.3 MB in the beginning and 98.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 85148.79 ms. Allocated memory was 234.4 MB in the beginning and 830.5 MB in the end (delta: 596.1 MB). Free memory was 98.1 MB in the beginning and 344.2 MB in the end (delta: -246.1 MB). Peak memory consumption was 667.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40266.88 ms. Allocated memory was 830.5 MB in the beginning and 1.3 GB in the end (delta: 461.4 MB). Free memory was 344.2 MB in the beginning and 236.3 MB in the end (delta: 107.9 MB). Peak memory consumption was 569.3 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...