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/Problem01_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:55:48,087 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:55:48,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:55:48,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:55:48,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:55:48,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:55:48,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:55:48,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:55:48,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:55:48,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:55:48,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:55:48,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:55:48,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:55:48,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:55:48,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:55:48,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:55:48,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:55:48,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:55:48,170 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 00:55:48,184 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:55:48,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:55:48,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:55:48,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:55:48,186 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:55:48,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:55:48,187 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:55:48,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:55:48,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:55:48,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:55:48,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:55:48,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:55:48,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:55:48,188 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:55:48,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:55:48,189 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:55:48,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:55:48,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:55:48,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:55:48,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:55:48,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:55:48,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:55:48,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:55:48,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:55:48,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:55:48,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:55:48,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:55:48,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:55:48,192 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 00:55:48,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:55:48,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:55:48,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:55:48,527 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:55:48,527 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:55:48,528 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label20.c [2019-10-07 00:55:48,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002ad68f0/523e2f34c9a44d6fb97f39a25b3c896c/FLAG5dc4974c5 [2019-10-07 00:55:49,155 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:55:49,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label20.c [2019-10-07 00:55:49,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002ad68f0/523e2f34c9a44d6fb97f39a25b3c896c/FLAG5dc4974c5 [2019-10-07 00:55:49,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/002ad68f0/523e2f34c9a44d6fb97f39a25b3c896c [2019-10-07 00:55:49,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:55:49,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:55:49,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:49,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:55:49,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:55:49,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:49" (1/1) ... [2019-10-07 00:55:49,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337d46e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:49, skipping insertion in model container [2019-10-07 00:55:49,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:49" (1/1) ... [2019-10-07 00:55:49,459 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:55:49,519 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:55:50,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:50,045 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:55:50,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:50,233 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:55:50,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50 WrapperNode [2019-10-07 00:55:50,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:50,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:55:50,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:55:50,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:55:50,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (1/1) ... [2019-10-07 00:55:50,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:55:50,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:55:50,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:55:50,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:55:50,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (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 00:55:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:55:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:55:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:55:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:55:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:55:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:55:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:55:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:55:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:55:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:55:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:55:52,300 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:55:52,301 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:55:52,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:52 BoogieIcfgContainer [2019-10-07 00:55:52,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:55:52,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:55:52,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:55:52,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:55:52,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:55:49" (1/3) ... [2019-10-07 00:55:52,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af85327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:52, skipping insertion in model container [2019-10-07 00:55:52,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:50" (2/3) ... [2019-10-07 00:55:52,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af85327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:52, skipping insertion in model container [2019-10-07 00:55:52,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:52" (3/3) ... [2019-10-07 00:55:52,326 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label20.c [2019-10-07 00:55:52,339 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:55:52,350 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:55:52,363 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:55:52,399 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:55:52,400 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:55:52,400 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:55:52,400 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:55:52,400 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:55:52,400 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:55:52,401 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:55:52,401 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:55:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:55:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:55:52,443 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:52,444 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:52,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash 826139497, now seen corresponding path program 1 times [2019-10-07 00:55:52,462 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:52,462 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:52,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:52,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:52,879 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 00:55:52,880 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:52,881 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:52,881 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:55:52,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:52,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:52,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:52,905 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:55:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:53,403 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:55:53,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:53,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:55:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:53,428 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:55:53,428 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:55:53,434 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 00:55:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:55:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:55:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:55:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-07 00:55:53,539 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-07 00:55:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:53,541 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-07 00:55:53,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-07 00:55:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:55:53,551 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:53,551 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:53,552 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1196347136, now seen corresponding path program 1 times [2019-10-07 00:55:53,552 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:53,553 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:53,553 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:53,554 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:53,771 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:53,771 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:53,771 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:53,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:53,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:53,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:53,774 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-07 00:55:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:54,354 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-07 00:55:54,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:55:54,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:55:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:54,360 INFO L225 Difference]: With dead ends: 402 [2019-10-07 00:55:54,360 INFO L226 Difference]: Without dead ends: 250 [2019-10-07 00:55:54,362 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:55:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-07 00:55:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-07 00:55:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-07 00:55:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-07 00:55:54,402 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-07 00:55:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:54,402 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-07 00:55:54,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-07 00:55:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:55:54,411 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:54,411 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:54,411 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2129368740, now seen corresponding path program 1 times [2019-10-07 00:55:54,412 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:54,412 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:54,412 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:54,413 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:54,597 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:54,599 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:54,599 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:55:54,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:54,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:54,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:54,601 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-07 00:55:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:55,021 INFO L93 Difference]: Finished difference Result 700 states and 1242 transitions. [2019-10-07 00:55:55,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:55,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-07 00:55:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:55,028 INFO L225 Difference]: With dead ends: 700 [2019-10-07 00:55:55,028 INFO L226 Difference]: Without dead ends: 467 [2019-10-07 00:55:55,031 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 00:55:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-07 00:55:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-07 00:55:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 00:55:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 737 transitions. [2019-10-07 00:55:55,066 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 737 transitions. Word has length 88 [2019-10-07 00:55:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:55,067 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 737 transitions. [2019-10-07 00:55:55,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 737 transitions. [2019-10-07 00:55:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 00:55:55,070 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:55,071 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:55,071 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:55,072 INFO L82 PathProgramCache]: Analyzing trace with hash 579114448, now seen corresponding path program 1 times [2019-10-07 00:55:55,072 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:55,072 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:55,072 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:55,072 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:55,172 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:55,172 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:55,172 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:55:55,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:55,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:55,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:55,174 INFO L87 Difference]: Start difference. First operand 467 states and 737 transitions. Second operand 3 states. [2019-10-07 00:55:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:55,589 INFO L93 Difference]: Finished difference Result 1235 states and 2049 transitions. [2019-10-07 00:55:55,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:55,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-07 00:55:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:55,601 INFO L225 Difference]: With dead ends: 1235 [2019-10-07 00:55:55,601 INFO L226 Difference]: Without dead ends: 773 [2019-10-07 00:55:55,604 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 00:55:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-07 00:55:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 696. [2019-10-07 00:55:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-07 00:55:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1128 transitions. [2019-10-07 00:55:55,672 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1128 transitions. Word has length 94 [2019-10-07 00:55:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:55,673 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 1128 transitions. [2019-10-07 00:55:55,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1128 transitions. [2019-10-07 00:55:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-07 00:55:55,678 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:55,678 INFO L385 BasicCegarLoop]: trace histogram [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, 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 00:55:55,678 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1131111488, now seen corresponding path program 1 times [2019-10-07 00:55:55,679 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:55,679 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:55,680 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:55,680 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:55,812 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:55,812 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:55,812 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:55,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:55,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:55,814 INFO L87 Difference]: Start difference. First operand 696 states and 1128 transitions. Second operand 6 states. [2019-10-07 00:55:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:56,293 INFO L93 Difference]: Finished difference Result 1437 states and 2458 transitions. [2019-10-07 00:55:56,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:55:56,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-07 00:55:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:56,300 INFO L225 Difference]: With dead ends: 1437 [2019-10-07 00:55:56,300 INFO L226 Difference]: Without dead ends: 746 [2019-10-07 00:55:56,304 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 00:55:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-10-07 00:55:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 645. [2019-10-07 00:55:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-07 00:55:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 930 transitions. [2019-10-07 00:55:56,340 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 930 transitions. Word has length 102 [2019-10-07 00:55:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:56,340 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 930 transitions. [2019-10-07 00:55:56,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 930 transitions. [2019-10-07 00:55:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 00:55:56,344 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:56,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:56,345 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1833679291, now seen corresponding path program 1 times [2019-10-07 00:55:56,346 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:56,346 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:56,346 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:56,347 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:56,427 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:56,428 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:55:56,428 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 00:55:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:56,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 00:55:56,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:55:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 00:55:56,685 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:55:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 00:55:56,815 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 00:55:56,815 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2019-10-07 00:55:56,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:55:56,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:55:56,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:55:56,816 INFO L87 Difference]: Start difference. First operand 645 states and 930 transitions. Second operand 4 states. [2019-10-07 00:55:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:57,369 INFO L93 Difference]: Finished difference Result 1905 states and 2790 transitions. [2019-10-07 00:55:57,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:55:57,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2019-10-07 00:55:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:57,378 INFO L225 Difference]: With dead ends: 1905 [2019-10-07 00:55:57,378 INFO L226 Difference]: Without dead ends: 1265 [2019-10-07 00:55:57,381 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:55:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2019-10-07 00:55:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1265. [2019-10-07 00:55:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2019-10-07 00:55:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1814 transitions. [2019-10-07 00:55:57,427 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1814 transitions. Word has length 111 [2019-10-07 00:55:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:57,428 INFO L462 AbstractCegarLoop]: Abstraction has 1265 states and 1814 transitions. [2019-10-07 00:55:57,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:55:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1814 transitions. [2019-10-07 00:55:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 00:55:57,433 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:57,434 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 00:55:57,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:55:57,639 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1928830253, now seen corresponding path program 1 times [2019-10-07 00:55:57,641 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:57,641 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:57,642 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:57,642 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:57,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:57,755 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:55:57,755 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 00:55:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:57,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:55:57,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:55:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:55:57,900 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:55:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 00:55:57,992 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:55:57,993 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 00:55:57,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:57,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:55:57,995 INFO L87 Difference]: Start difference. First operand 1265 states and 1814 transitions. Second operand 3 states. [2019-10-07 00:55:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:58,331 INFO L93 Difference]: Finished difference Result 1719 states and 2530 transitions. [2019-10-07 00:55:58,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:58,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-07 00:55:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:58,342 INFO L225 Difference]: With dead ends: 1719 [2019-10-07 00:55:58,343 INFO L226 Difference]: Without dead ends: 1717 [2019-10-07 00:55:58,344 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:55:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2019-10-07 00:55:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1567. [2019-10-07 00:55:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2019-10-07 00:55:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2285 transitions. [2019-10-07 00:55:58,405 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2285 transitions. Word has length 113 [2019-10-07 00:55:58,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:58,405 INFO L462 AbstractCegarLoop]: Abstraction has 1567 states and 2285 transitions. [2019-10-07 00:55:58,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:58,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2285 transitions. [2019-10-07 00:55:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-07 00:55:58,412 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:58,413 INFO L385 BasicCegarLoop]: trace histogram [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, 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] [2019-10-07 00:55:58,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:55:58,617 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1955114107, now seen corresponding path program 1 times [2019-10-07 00:55:58,618 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:58,618 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:58,618 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:58,619 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:58,800 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:58,801 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:55:58,801 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 00:55:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:58,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 00:55:58,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:55:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:58,977 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:55:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:59,076 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:55:59,137 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:55:59,138 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:55:59,144 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:55:59,154 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:55:59,155 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:55:59,533 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 96 for LOIs [2019-10-07 00:55:59,999 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:00,000 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 00:56:00,007 INFO L168 Benchmark]: Toolchain (without parser) took 10562.74 ms. Allocated memory was 139.5 MB in the beginning and 378.0 MB in the end (delta: 238.6 MB). Free memory was 102.9 MB in the beginning and 202.4 MB in the end (delta: -99.5 MB). Peak memory consumption was 139.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:00,007 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 139.5 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 00:56:00,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.06 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 170.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:00,009 INFO L168 Benchmark]: Boogie Preprocessor took 108.31 ms. Allocated memory is still 206.6 MB. Free memory was 170.1 MB in the beginning and 165.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:00,010 INFO L168 Benchmark]: RCFGBuilder took 1962.72 ms. Allocated memory was 206.6 MB in the beginning and 252.2 MB in the end (delta: 45.6 MB). Free memory was 165.0 MB in the beginning and 206.5 MB in the end (delta: -41.5 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:00,011 INFO L168 Benchmark]: TraceAbstraction took 7696.74 ms. Allocated memory was 252.2 MB in the beginning and 378.0 MB in the end (delta: 125.8 MB). Free memory was 206.5 MB in the beginning and 202.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:00,015 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 139.5 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.06 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 170.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.31 ms. Allocated memory is still 206.6 MB. Free memory was 170.1 MB in the beginning and 165.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1962.72 ms. Allocated memory was 206.6 MB in the beginning and 252.2 MB in the end (delta: 45.6 MB). Free memory was 165.0 MB in the beginning and 206.5 MB in the end (delta: -41.5 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7696.74 ms. Allocated memory was 252.2 MB in the beginning and 378.0 MB in the end (delta: 125.8 MB). Free memory was 206.5 MB in the beginning and 202.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...