java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:30:09,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:30:09,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:30:09,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:30:09,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:30:09,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:30:09,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:30:09,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:30:09,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:30:09,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:30:09,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:30:09,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:30:09,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:30:09,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:30:09,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:30:09,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:30:09,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:30:09,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:30:09,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:30:09,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:30:09,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:30:09,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:30:09,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:30:09,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:30:09,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:30:09,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:30:09,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:30:09,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:30:09,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:30:09,272 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:30:09,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:30:09,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:30:09,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:30:09,274 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:30:09,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:30:09,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:30:09,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:30:09,276 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:30:09,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:30:09,276 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:30:09,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:30:09,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:30:09,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:30:09,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:30:09,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:30:09,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:09,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:30:09,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:30:09,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:30:09,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:30:09,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:30:09,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:30:09,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:30:09,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:30:09,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:30:09,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:30:09,556 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:30:09,556 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:30:09,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2019-10-07 03:30:09,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95de80b34/25c7a06047da4818a8cb13db66472af5/FLAG173d43e8d [2019-10-07 03:30:10,236 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:30:10,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2019-10-07 03:30:10,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95de80b34/25c7a06047da4818a8cb13db66472af5/FLAG173d43e8d [2019-10-07 03:30:10,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95de80b34/25c7a06047da4818a8cb13db66472af5 [2019-10-07 03:30:10,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:30:10,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:30:10,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:10,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:30:10,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:30:10,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:10" (1/1) ... [2019-10-07 03:30:10,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538e7e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:10, skipping insertion in model container [2019-10-07 03:30:10,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:30:10" (1/1) ... [2019-10-07 03:30:10,481 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:30:10,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:30:11,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:11,414 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:30:11,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:30:11,858 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:30:11,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11 WrapperNode [2019-10-07 03:30:11,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:30:11,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:30:11,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:30:11,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:30:11,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:11,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:11,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:11,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:11,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:11,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:12,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... [2019-10-07 03:30:12,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:30:12,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:30:12,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:30:12,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:30:12,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:30:12,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:30:12,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:30:12,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:30:12,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:30:12,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:30:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:30:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:30:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:30:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:30:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:30:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:30:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:30:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:30:21,509 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:30:21,509 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:30:21,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:21 BoogieIcfgContainer [2019-10-07 03:30:21,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:30:21,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:30:21,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:30:21,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:30:21,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:30:10" (1/3) ... [2019-10-07 03:30:21,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72559ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:21, skipping insertion in model container [2019-10-07 03:30:21,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:30:11" (2/3) ... [2019-10-07 03:30:21,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72559ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:30:21, skipping insertion in model container [2019-10-07 03:30:21,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:30:21" (3/3) ... [2019-10-07 03:30:21,529 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2019-10-07 03:30:21,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:30:21,548 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:30:21,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:30:21,590 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:30:21,591 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:30:21,591 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:30:21,591 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:30:21,591 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:30:21,591 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:30:21,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:30:21,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:30:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-07 03:30:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:30:21,631 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:21,632 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:21,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 648055917, now seen corresponding path program 1 times [2019-10-07 03:30:21,650 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:21,650 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:21,650 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:21,651 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:21,869 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:21,869 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:21,870 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:21,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:21,892 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-07 03:30:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:25,591 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-07 03:30:25,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:25,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:30:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:25,632 INFO L225 Difference]: With dead ends: 953 [2019-10-07 03:30:25,632 INFO L226 Difference]: Without dead ends: 702 [2019-10-07 03:30:25,639 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-07 03:30:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 430. [2019-10-07 03:30:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2019-10-07 03:30:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 821 transitions. [2019-10-07 03:30:25,725 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 821 transitions. Word has length 11 [2019-10-07 03:30:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:25,726 INFO L462 AbstractCegarLoop]: Abstraction has 430 states and 821 transitions. [2019-10-07 03:30:25,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 821 transitions. [2019-10-07 03:30:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 03:30:25,728 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:25,729 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:25,729 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1069434126, now seen corresponding path program 1 times [2019-10-07 03:30:25,730 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:25,730 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:25,730 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:25,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:25,886 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:25,887 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:25,887 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:30:25,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:30:25,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:30:25,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:25,893 INFO L87 Difference]: Start difference. First operand 430 states and 821 transitions. Second operand 4 states. [2019-10-07 03:30:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:29,423 INFO L93 Difference]: Finished difference Result 1701 states and 3299 transitions. [2019-10-07 03:30:29,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:30:29,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-07 03:30:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:29,441 INFO L225 Difference]: With dead ends: 1701 [2019-10-07 03:30:29,441 INFO L226 Difference]: Without dead ends: 1276 [2019-10-07 03:30:29,444 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:30:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2019-10-07 03:30:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1249. [2019-10-07 03:30:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2019-10-07 03:30:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2090 transitions. [2019-10-07 03:30:29,519 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2090 transitions. Word has length 21 [2019-10-07 03:30:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:29,520 INFO L462 AbstractCegarLoop]: Abstraction has 1249 states and 2090 transitions. [2019-10-07 03:30:29,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:30:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2090 transitions. [2019-10-07 03:30:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-07 03:30:29,525 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:29,525 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] [2019-10-07 03:30:29,525 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1093282752, now seen corresponding path program 1 times [2019-10-07 03:30:29,526 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:29,526 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:29,526 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:29,527 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:30:29,654 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:29,654 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:30:29,655 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:30:29,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:29,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:29,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:30:29,657 INFO L87 Difference]: Start difference. First operand 1249 states and 2090 transitions. Second operand 5 states. [2019-10-07 03:30:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:36,154 INFO L93 Difference]: Finished difference Result 3799 states and 6510 transitions. [2019-10-07 03:30:36,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:30:36,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-10-07 03:30:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:36,177 INFO L225 Difference]: With dead ends: 3799 [2019-10-07 03:30:36,178 INFO L226 Difference]: Without dead ends: 2555 [2019-10-07 03:30:36,181 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:30:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2019-10-07 03:30:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2080. [2019-10-07 03:30:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2080 states. [2019-10-07 03:30:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3141 transitions. [2019-10-07 03:30:36,257 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3141 transitions. Word has length 68 [2019-10-07 03:30:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:36,258 INFO L462 AbstractCegarLoop]: Abstraction has 2080 states and 3141 transitions. [2019-10-07 03:30:36,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3141 transitions. [2019-10-07 03:30:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-07 03:30:36,270 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:36,271 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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 03:30:36,271 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:36,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1153846069, now seen corresponding path program 1 times [2019-10-07 03:30:36,272 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:36,272 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:36,272 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:36,272 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 03:30:36,811 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:36,811 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:36,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 03:30:37,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:37,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 03:30:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 03:30:37,330 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:37,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:37,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:37,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:37,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:37,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:37,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 52 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 03:30:38,013 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:30:38,014 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2019-10-07 03:30:38,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:30:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:30:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-07 03:30:38,015 INFO L87 Difference]: Start difference. First operand 2080 states and 3141 transitions. Second operand 5 states. [2019-10-07 03:30:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:30:40,938 INFO L93 Difference]: Finished difference Result 4434 states and 6674 transitions. [2019-10-07 03:30:40,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:30:40,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2019-10-07 03:30:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:30:40,956 INFO L225 Difference]: With dead ends: 4434 [2019-10-07 03:30:40,957 INFO L226 Difference]: Without dead ends: 2359 [2019-10-07 03:30:40,963 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-10-07 03:30:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-10-07 03:30:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2329. [2019-10-07 03:30:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2019-10-07 03:30:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3425 transitions. [2019-10-07 03:30:41,057 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3425 transitions. Word has length 212 [2019-10-07 03:30:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:30:41,060 INFO L462 AbstractCegarLoop]: Abstraction has 2329 states and 3425 transitions. [2019-10-07 03:30:41,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:30:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3425 transitions. [2019-10-07 03:30:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-07 03:30:41,073 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:30:41,073 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:30:41,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:41,287 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:30:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:30:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1424522606, now seen corresponding path program 1 times [2019-10-07 03:30:41,288 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:30:41,288 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:41,288 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:41,288 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:30:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:30:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 129 proven. 19 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 03:30:41,989 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:30:41,989 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:30:41,990 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 03:30:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:30:42,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 03:30:42,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:30:42,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:42,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 130 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 03:30:42,547 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:30:42,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 03:30:42,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-07 03:30:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 32 proven. 133 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 03:30:42,965 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:30:42,994 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-07 03:30:42,995 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:30:43,001 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:30:43,009 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:30:43,010 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:30:43,161 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-07 03:30:43,462 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-07 03:30:44,142 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5869 conjuctions. This might take some time... [2019-10-07 03:30:44,227 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-07 03:30:44,587 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5869 conjuctions. This might take some time... [2019-10-07 03:30:45,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:30:45,333 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:30:45,346 INFO L168 Benchmark]: Toolchain (without parser) took 34874.83 ms. Allocated memory was 138.9 MB in the beginning and 617.1 MB in the end (delta: 478.2 MB). Free memory was 98.5 MB in the beginning and 206.6 MB in the end (delta: -108.1 MB). Peak memory consumption was 370.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,349 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1392.10 ms. Allocated memory was 138.9 MB in the beginning and 209.2 MB in the end (delta: 70.3 MB). Free memory was 98.1 MB in the beginning and 118.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,354 INFO L168 Benchmark]: Boogie Preprocessor took 172.33 ms. Allocated memory is still 209.2 MB. Free memory was 118.9 MB in the beginning and 106.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,356 INFO L168 Benchmark]: RCFGBuilder took 9479.32 ms. Allocated memory was 209.2 MB in the beginning and 302.5 MB in the end (delta: 93.3 MB). Free memory was 106.3 MB in the beginning and 218.1 MB in the end (delta: -111.8 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,357 INFO L168 Benchmark]: TraceAbstraction took 23826.07 ms. Allocated memory was 302.5 MB in the beginning and 617.1 MB in the end (delta: 314.6 MB). Free memory was 218.1 MB in the beginning and 206.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 326.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:30:45,366 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1392.10 ms. Allocated memory was 138.9 MB in the beginning and 209.2 MB in the end (delta: 70.3 MB). Free memory was 98.1 MB in the beginning and 118.9 MB in the end (delta: -20.8 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.33 ms. Allocated memory is still 209.2 MB. Free memory was 118.9 MB in the beginning and 106.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9479.32 ms. Allocated memory was 209.2 MB in the beginning and 302.5 MB in the end (delta: 93.3 MB). Free memory was 106.3 MB in the beginning and 218.1 MB in the end (delta: -111.8 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23826.07 ms. Allocated memory was 302.5 MB in the beginning and 617.1 MB in the end (delta: 314.6 MB). Free memory was 218.1 MB in the beginning and 206.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 326.1 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...