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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:40:30,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:40:30,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:40:30,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-13 21:40:30,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:40:30,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:40:30,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:40:30,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:40:30,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:40:30,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:40:30,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:40:30,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:40:30,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:40:30,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:40:30,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:40:30,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:40:30,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:40:30,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:40:30,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:40:30,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:40:30,215 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 [2019-10-13 21:40:30,229 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:40:30,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:40:30,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:40:30,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:40:30,230 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:40:30,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:40:30,231 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:40:30,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:40:30,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:40:30,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:40:30,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:40:30,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:40:30,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:40:30,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:40:30,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:40:30,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:40:30,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:30,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:40:30,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:40:30,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:40:30,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:40:30,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:40:30,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:40:30,235 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 [2019-10-13 21:40:30,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:40:30,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:40:30,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:40:30,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:40:30,552 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:40:30,553 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2019-10-13 21:40:30,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b321e2e/a5e28deb0e0943a99073c00027e9d6c6/FLAG817af73e2 [2019-10-13 21:40:31,243 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:40:31,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2019-10-13 21:40:31,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b321e2e/a5e28deb0e0943a99073c00027e9d6c6/FLAG817af73e2 [2019-10-13 21:40:31,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b321e2e/a5e28deb0e0943a99073c00027e9d6c6 [2019-10-13 21:40:31,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:40:31,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:40:31,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:31,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:40:31,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:40:31,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:31" (1/1) ... [2019-10-13 21:40:31,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d066b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:31, skipping insertion in model container [2019-10-13 21:40:31,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:31" (1/1) ... [2019-10-13 21:40:31,472 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:40:31,536 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:40:32,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:32,063 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:40:32,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:32,315 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:40:32,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32 WrapperNode [2019-10-13 21:40:32,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:32,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:40:32,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:40:32,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:40:32,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (1/1) ... [2019-10-13 21:40:32,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:40:32,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:40:32,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:40:32,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:40:32,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (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 [2019-10-13 21:40:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:40:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:40:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:40:34,399 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:40:34,400 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:40:34,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:34 BoogieIcfgContainer [2019-10-13 21:40:34,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:40:34,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:40:34,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:40:34,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:40:34,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:31" (1/3) ... [2019-10-13 21:40:34,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503dea4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:34, skipping insertion in model container [2019-10-13 21:40:34,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:32" (2/3) ... [2019-10-13 21:40:34,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503dea4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:34, skipping insertion in model container [2019-10-13 21:40:34,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:34" (3/3) ... [2019-10-13 21:40:34,411 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2019-10-13 21:40:34,423 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:40:34,433 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:40:34,448 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:40:34,479 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:40:34,479 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:40:34,479 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:40:34,479 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:40:34,479 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:40:34,480 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:40:34,480 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:40:34,480 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:40:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-13 21:40:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 21:40:34,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:34,533 INFO L380 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] [2019-10-13 21:40:34,537 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash 826790220, now seen corresponding path program 1 times [2019-10-13 21:40:34,558 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:34,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772704] [2019-10-13 21:40:34,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:34,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:34,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:35,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772704] [2019-10-13 21:40:35,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:35,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:35,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406288167] [2019-10-13 21:40:35,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:35,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:35,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:35,102 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-13 21:40:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:35,710 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-13 21:40:35,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:40:35,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-13 21:40:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:35,739 INFO L225 Difference]: With dead ends: 246 [2019-10-13 21:40:35,739 INFO L226 Difference]: Without dead ends: 157 [2019-10-13 21:40:35,747 INFO L600 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 [2019-10-13 21:40:35,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-13 21:40:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-13 21:40:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-13 21:40:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-13 21:40:35,814 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-13 21:40:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:35,815 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-13 21:40:35,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:40:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-13 21:40:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:40:35,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:35,825 INFO L380 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] [2019-10-13 21:40:35,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1195696413, now seen corresponding path program 1 times [2019-10-13 21:40:35,829 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:35,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501218159] [2019-10-13 21:40:35,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:35,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:35,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:35,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501218159] [2019-10-13 21:40:36,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:36,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:40:36,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895492565] [2019-10-13 21:40:36,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:40:36,004 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:36,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:40:36,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:40:36,005 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-13 21:40:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:36,675 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-13 21:40:36,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:40:36,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-13 21:40:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:36,683 INFO L225 Difference]: With dead ends: 402 [2019-10-13 21:40:36,683 INFO L226 Difference]: Without dead ends: 250 [2019-10-13 21:40:36,685 INFO L600 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 [2019-10-13 21:40:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-13 21:40:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-13 21:40:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-13 21:40:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-13 21:40:36,716 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-13 21:40:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:36,717 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-13 21:40:36,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:40:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-13 21:40:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 21:40:36,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:36,720 INFO L380 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] [2019-10-13 21:40:36,721 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2128718017, now seen corresponding path program 1 times [2019-10-13 21:40:36,721 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:36,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131236285] [2019-10-13 21:40:36,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:36,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:36,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:36,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131236285] [2019-10-13 21:40:36,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:36,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:36,891 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410678829] [2019-10-13 21:40:36,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:36,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:36,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:36,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:36,897 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-13 21:40:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:37,347 INFO L93 Difference]: Finished difference Result 700 states and 1242 transitions. [2019-10-13 21:40:37,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:40:37,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-13 21:40:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:37,355 INFO L225 Difference]: With dead ends: 700 [2019-10-13 21:40:37,355 INFO L226 Difference]: Without dead ends: 467 [2019-10-13 21:40:37,358 INFO L600 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 [2019-10-13 21:40:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-13 21:40:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-13 21:40:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-13 21:40:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 737 transitions. [2019-10-13 21:40:37,397 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 737 transitions. Word has length 88 [2019-10-13 21:40:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:37,398 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 737 transitions. [2019-10-13 21:40:37,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:40:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 737 transitions. [2019-10-13 21:40:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 21:40:37,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:37,404 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:40:37,405 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:37,405 INFO L82 PathProgramCache]: Analyzing trace with hash -847323169, now seen corresponding path program 1 times [2019-10-13 21:40:37,405 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:37,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44734394] [2019-10-13 21:40:37,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:37,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:37,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:37,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44734394] [2019-10-13 21:40:37,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:37,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:40:37,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075420838] [2019-10-13 21:40:37,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:40:37,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:37,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:40:37,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:40:37,538 INFO L87 Difference]: Start difference. First operand 467 states and 737 transitions. Second operand 6 states. [2019-10-13 21:40:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:38,244 INFO L93 Difference]: Finished difference Result 955 states and 1521 transitions. [2019-10-13 21:40:38,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:40:38,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-10-13 21:40:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:38,249 INFO L225 Difference]: With dead ends: 955 [2019-10-13 21:40:38,250 INFO L226 Difference]: Without dead ends: 493 [2019-10-13 21:40:38,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:40:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-13 21:40:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 404. [2019-10-13 21:40:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2019-10-13 21:40:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 584 transitions. [2019-10-13 21:40:38,281 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 584 transitions. Word has length 89 [2019-10-13 21:40:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:38,281 INFO L462 AbstractCegarLoop]: Abstraction has 404 states and 584 transitions. [2019-10-13 21:40:38,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:40:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 584 transitions. [2019-10-13 21:40:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:40:38,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:38,287 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:40:38,287 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2062216878, now seen corresponding path program 1 times [2019-10-13 21:40:38,288 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:38,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340782837] [2019-10-13 21:40:38,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:38,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:38,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:38,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340782837] [2019-10-13 21:40:38,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817780313] [2019-10-13 21:40:38,390 INFO L94 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 [2019-10-13 21:40:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:38,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 21:40:38,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:40:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:38,657 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:40:38,894 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-10-13 21:40:38,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:38,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:40:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:39,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1533223976] [2019-10-13 21:40:39,140 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-13 21:40:39,140 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:40:39,147 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:40:39,156 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:40:39,156 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:40:39,474 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-13 21:40:39,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:39,976 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:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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:102) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:40:39,982 INFO L168 Benchmark]: Toolchain (without parser) took 8526.38 ms. Allocated memory was 135.8 MB in the beginning and 359.7 MB in the end (delta: 223.9 MB). Free memory was 98.9 MB in the beginning and 293.0 MB in the end (delta: -194.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:39,983 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:40:39,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 859.89 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 169.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:39,985 INFO L168 Benchmark]: Boogie Preprocessor took 116.01 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 164.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:39,990 INFO L168 Benchmark]: RCFGBuilder took 1968.89 ms. Allocated memory was 202.9 MB in the beginning and 259.5 MB in the end (delta: 56.6 MB). Free memory was 164.8 MB in the beginning and 223.6 MB in the end (delta: -58.8 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:39,993 INFO L168 Benchmark]: TraceAbstraction took 5576.65 ms. Allocated memory was 259.5 MB in the beginning and 359.7 MB in the end (delta: 100.1 MB). Free memory was 223.6 MB in the beginning and 293.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:40,005 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 859.89 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 98.7 MB in the beginning and 169.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.01 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 164.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1968.89 ms. Allocated memory was 202.9 MB in the beginning and 259.5 MB in the end (delta: 56.6 MB). Free memory was 164.8 MB in the beginning and 223.6 MB in the end (delta: -58.8 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5576.65 ms. Allocated memory was 259.5 MB in the beginning and 359.7 MB in the end (delta: 100.1 MB). Free memory was 223.6 MB in the beginning and 293.0 MB in the end (delta: -69.4 MB). Peak memory consumption was 30.8 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:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...