java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:43:51,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:43:51,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:43:51,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:43:51,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:43:51,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:43:52,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:43:52,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:43:52,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:43:52,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:43:52,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:43:52,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:43:52,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:43:52,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:43:52,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:43:52,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:43:52,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:43:52,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:43:52,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:43:52,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:43:52,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:43:52,046 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:43:52,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:43:52,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:43:52,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:43:52,048 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:43:52,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:43:52,048 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:43:52,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:43:52,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:43:52,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:43:52,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:43:52,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:43:52,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:43:52,050 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:43:52,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:43:52,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:43:52,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:43:52,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:43:52,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:43:52,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:43:52,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:43:52,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:43:52,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:43:52,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:43:52,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:43:52,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:43:52,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:43:52,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:43:52,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:43:52,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:43:52,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:43:52,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:43:52,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:43:52,400 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:43:52,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2019-10-07 03:43:52,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ba2f02d/a88816c55ac24a89987e9fc896cdf8d8/FLAG826164fbb [2019-10-07 03:43:53,152 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:43:53,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2019-10-07 03:43:53,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ba2f02d/a88816c55ac24a89987e9fc896cdf8d8/FLAG826164fbb [2019-10-07 03:43:53,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ba2f02d/a88816c55ac24a89987e9fc896cdf8d8 [2019-10-07 03:43:53,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:43:53,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:43:53,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:43:53,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:43:53,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:43:53,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:53" (1/1) ... [2019-10-07 03:43:53,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3457a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:53, skipping insertion in model container [2019-10-07 03:43:53,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:53" (1/1) ... [2019-10-07 03:43:53,356 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:43:53,470 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:43:54,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:43:54,527 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:43:54,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:43:54,987 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:43:54,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54 WrapperNode [2019-10-07 03:43:54,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:43:54,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:43:54,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:43:54,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:43:55,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... [2019-10-07 03:43:55,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:43:55,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:43:55,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:43:55,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:43:55,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:43:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:43:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:43:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:43:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:43:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:43:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:43:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:43:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:43:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:43:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:43:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:43:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:43:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:43:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:43:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:45:33,689 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:45:33,689 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:45:33,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:45:33 BoogieIcfgContainer [2019-10-07 03:45:33,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:45:33,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:45:33,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:45:33,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:45:33,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:43:53" (1/3) ... [2019-10-07 03:45:33,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d28852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:45:33, skipping insertion in model container [2019-10-07 03:45:33,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:54" (2/3) ... [2019-10-07 03:45:33,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d28852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:45:33, skipping insertion in model container [2019-10-07 03:45:33,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:45:33" (3/3) ... [2019-10-07 03:45:33,699 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2019-10-07 03:45:33,708 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:45:33,716 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:45:33,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:45:33,756 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:45:33,756 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:45:33,757 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:45:33,757 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:45:33,757 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:45:33,757 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:45:33,757 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:45:33,757 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:45:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:45:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:45:33,791 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:33,792 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:33,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1816957350, now seen corresponding path program 1 times [2019-10-07 03:45:33,805 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:33,805 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:33,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:33,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:34,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:34,252 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:34,253 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:45:34,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:45:34,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:45:34,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:45:34,274 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:45:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:37,287 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:45:37,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:45:37,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:45:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:37,315 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:45:37,315 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:45:37,324 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:45:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:45:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 890. [2019-10-07 03:45:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2019-10-07 03:45:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1719 transitions. [2019-10-07 03:45:37,437 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1719 transitions. Word has length 11 [2019-10-07 03:45:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:37,438 INFO L462 AbstractCegarLoop]: Abstraction has 890 states and 1719 transitions. [2019-10-07 03:45:37,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:45:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1719 transitions. [2019-10-07 03:45:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 03:45:37,440 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:37,440 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:37,441 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash -280392011, now seen corresponding path program 1 times [2019-10-07 03:45:37,441 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:37,442 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:37,442 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:37,442 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:37,566 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:37,566 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:37,566 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:45:37,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:45:37,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:45:37,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:45:37,569 INFO L87 Difference]: Start difference. First operand 890 states and 1719 transitions. Second operand 6 states. [2019-10-07 03:45:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:43,626 INFO L93 Difference]: Finished difference Result 2694 states and 5243 transitions. [2019-10-07 03:45:43,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:45:43,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-07 03:45:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:43,648 INFO L225 Difference]: With dead ends: 2694 [2019-10-07 03:45:43,649 INFO L226 Difference]: Without dead ends: 1809 [2019-10-07 03:45:43,654 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2019-10-07 03:45:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1789. [2019-10-07 03:45:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2019-10-07 03:45:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 3102 transitions. [2019-10-07 03:45:43,790 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 3102 transitions. Word has length 26 [2019-10-07 03:45:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:43,791 INFO L462 AbstractCegarLoop]: Abstraction has 1789 states and 3102 transitions. [2019-10-07 03:45:43,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:45:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 3102 transitions. [2019-10-07 03:45:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:45:43,795 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:43,796 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:43,796 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:43,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1270137231, now seen corresponding path program 1 times [2019-10-07 03:45:43,798 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:43,798 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:43,798 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:43,799 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:45:43,961 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:43,962 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:45:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:44,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:45:44,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:45:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:45:44,167 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:45:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:45:44,242 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:45:44,243 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-10-07 03:45:44,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:45:44,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:45:44,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:44,246 INFO L87 Difference]: Start difference. First operand 1789 states and 3102 transitions. Second operand 5 states. [2019-10-07 03:45:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:48,270 INFO L93 Difference]: Finished difference Result 5420 states and 9628 transitions. [2019-10-07 03:45:48,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:45:48,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:45:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:48,300 INFO L225 Difference]: With dead ends: 5420 [2019-10-07 03:45:48,300 INFO L226 Difference]: Without dead ends: 3636 [2019-10-07 03:45:48,306 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:45:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2019-10-07 03:45:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3580. [2019-10-07 03:45:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2019-10-07 03:45:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 6079 transitions. [2019-10-07 03:45:48,463 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 6079 transitions. Word has length 38 [2019-10-07 03:45:48,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:48,464 INFO L462 AbstractCegarLoop]: Abstraction has 3580 states and 6079 transitions. [2019-10-07 03:45:48,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:45:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 6079 transitions. [2019-10-07 03:45:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:45:48,467 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:48,467 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:48,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:48,671 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash 25991773, now seen corresponding path program 1 times [2019-10-07 03:45:48,672 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:48,673 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:48,673 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:48,673 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:48,806 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:48,806 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:45:48,807 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:45:48,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:45:48,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:45:48,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:45:48,808 INFO L87 Difference]: Start difference. First operand 3580 states and 6079 transitions. Second operand 6 states. [2019-10-07 03:45:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:52,310 INFO L93 Difference]: Finished difference Result 8533 states and 14580 transitions. [2019-10-07 03:45:52,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:45:52,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-07 03:45:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:52,343 INFO L225 Difference]: With dead ends: 8533 [2019-10-07 03:45:52,344 INFO L226 Difference]: Without dead ends: 4958 [2019-10-07 03:45:52,353 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2019-10-07 03:45:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 3956. [2019-10-07 03:45:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3956 states. [2019-10-07 03:45:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 6015 transitions. [2019-10-07 03:45:52,492 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 6015 transitions. Word has length 38 [2019-10-07 03:45:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:52,492 INFO L462 AbstractCegarLoop]: Abstraction has 3956 states and 6015 transitions. [2019-10-07 03:45:52,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:45:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 6015 transitions. [2019-10-07 03:45:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-07 03:45:52,502 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:52,503 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:52,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:52,503 INFO L82 PathProgramCache]: Analyzing trace with hash 663608142, now seen corresponding path program 1 times [2019-10-07 03:45:52,504 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:52,504 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:52,504 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:52,504 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:52,664 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:52,664 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:45:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:52,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:45:52,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:45:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:52,784 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:45:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:45:52,821 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 03:45:52,821 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-07 03:45:52,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:45:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:45:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:52,823 INFO L87 Difference]: Start difference. First operand 3956 states and 6015 transitions. Second operand 4 states. [2019-10-07 03:45:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:45:56,474 INFO L93 Difference]: Finished difference Result 10105 states and 15335 transitions. [2019-10-07 03:45:56,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:45:56,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2019-10-07 03:45:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:45:56,502 INFO L225 Difference]: With dead ends: 10105 [2019-10-07 03:45:56,502 INFO L226 Difference]: Without dead ends: 6154 [2019-10-07 03:45:56,513 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2019-10-07 03:45:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4878. [2019-10-07 03:45:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4878 states. [2019-10-07 03:45:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 6916 transitions. [2019-10-07 03:45:56,638 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 6916 transitions. Word has length 63 [2019-10-07 03:45:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:45:56,640 INFO L462 AbstractCegarLoop]: Abstraction has 4878 states and 6916 transitions. [2019-10-07 03:45:56,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:45:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 6916 transitions. [2019-10-07 03:45:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-07 03:45:56,643 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:45:56,643 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:45:56,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:56,848 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:45:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:45:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1476785066, now seen corresponding path program 1 times [2019-10-07 03:45:56,849 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:45:56,850 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:56,850 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:56,851 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:45:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:45:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:45:56,986 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:45:56,986 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:45:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:45:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:45:57,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:45:57,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:45:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 03:45:57,112 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:45:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 03:45:57,164 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:45:57,164 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2019-10-07 03:45:57,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:45:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:45:57,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:45:57,165 INFO L87 Difference]: Start difference. First operand 4878 states and 6916 transitions. Second operand 5 states. [2019-10-07 03:46:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:46:01,289 INFO L93 Difference]: Finished difference Result 14276 states and 20512 transitions. [2019-10-07 03:46:01,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:46:01,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-10-07 03:46:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:46:01,334 INFO L225 Difference]: With dead ends: 14276 [2019-10-07 03:46:01,334 INFO L226 Difference]: Without dead ends: 9403 [2019-10-07 03:46:01,349 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-07 03:46:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2019-10-07 03:46:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 8337. [2019-10-07 03:46:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8337 states. [2019-10-07 03:46:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 11157 transitions. [2019-10-07 03:46:01,523 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 11157 transitions. Word has length 69 [2019-10-07 03:46:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:46:01,524 INFO L462 AbstractCegarLoop]: Abstraction has 8337 states and 11157 transitions. [2019-10-07 03:46:01,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:46:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 11157 transitions. [2019-10-07 03:46:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 03:46:01,525 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:46:01,526 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:46:01,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:46:01,730 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:46:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:46:01,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1699621623, now seen corresponding path program 1 times [2019-10-07 03:46:01,731 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:46:01,731 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:46:01,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:46:01,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:46:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:46:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:46:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 03:46:01,839 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:46:01,839 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:46:01,839 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:46:01,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:46:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:46:01,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:46:01,840 INFO L87 Difference]: Start difference. First operand 8337 states and 11157 transitions. Second operand 4 states. [2019-10-07 03:46:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:46:05,793 INFO L93 Difference]: Finished difference Result 21074 states and 28968 transitions. [2019-10-07 03:46:05,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:46:05,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-07 03:46:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:46:05,851 INFO L225 Difference]: With dead ends: 21074 [2019-10-07 03:46:05,851 INFO L226 Difference]: Without dead ends: 12742 [2019-10-07 03:46:05,874 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:46:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2019-10-07 03:46:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 11433. [2019-10-07 03:46:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11433 states. [2019-10-07 03:46:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11433 states to 11433 states and 15127 transitions. [2019-10-07 03:46:06,219 INFO L78 Accepts]: Start accepts. Automaton has 11433 states and 15127 transitions. Word has length 94 [2019-10-07 03:46:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:46:06,220 INFO L462 AbstractCegarLoop]: Abstraction has 11433 states and 15127 transitions. [2019-10-07 03:46:06,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:46:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 11433 states and 15127 transitions. [2019-10-07 03:46:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-07 03:46:06,230 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:46:06,230 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 03:46:06,230 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:46:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:46:06,231 INFO L82 PathProgramCache]: Analyzing trace with hash -476604727, now seen corresponding path program 1 times [2019-10-07 03:46:06,231 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:46:06,231 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:46:06,231 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:46:06,232 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:46:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:46:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:46:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 03:46:06,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:46:06,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:46:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:46:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:46:06,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:46:06,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:46:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 03:46:06,563 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:46:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 41 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 03:46:06,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:46:06,690 INFO L162 IcfgInterpreter]: Started Sifa with 54 locations of interest [2019-10-07 03:46:06,691 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:46:06,697 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:46:06,704 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:46:06,705 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:46:06,908 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 51 for LOIs [2019-10-07 03:46:07,044 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2019-10-07 03:46:07,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2019-10-07 03:46:07,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 37 [2019-10-07 03:46:07,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 37 [2019-10-07 03:46:07,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:46:07,968 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:46:07,976 INFO L168 Benchmark]: Toolchain (without parser) took 134637.61 ms. Allocated memory was 146.3 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 94.7 MB in the beginning and 588.5 MB in the end (delta: -493.7 MB). Peak memory consumption was 664.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:46:07,978 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 03:46:07,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1649.51 ms. Allocated memory was 146.3 MB in the beginning and 230.2 MB in the end (delta: 83.9 MB). Free memory was 94.5 MB in the beginning and 100.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:46:07,981 INFO L168 Benchmark]: Boogie Preprocessor took 298.92 ms. Allocated memory was 230.2 MB in the beginning and 252.7 MB in the end (delta: 22.5 MB). Free memory was 100.4 MB in the beginning and 199.8 MB in the end (delta: -99.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:46:07,985 INFO L168 Benchmark]: RCFGBuilder took 98401.06 ms. Allocated memory was 252.7 MB in the beginning and 888.7 MB in the end (delta: 636.0 MB). Free memory was 199.8 MB in the beginning and 72.5 MB in the end (delta: 127.3 MB). Peak memory consumption was 763.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:46:07,986 INFO L168 Benchmark]: TraceAbstraction took 34279.26 ms. Allocated memory was 888.7 MB in the beginning and 1.3 GB in the end (delta: 415.8 MB). Free memory was 72.5 MB in the beginning and 588.5 MB in the end (delta: -516.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 03:46:07,994 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1649.51 ms. Allocated memory was 146.3 MB in the beginning and 230.2 MB in the end (delta: 83.9 MB). Free memory was 94.5 MB in the beginning and 100.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 298.92 ms. Allocated memory was 230.2 MB in the beginning and 252.7 MB in the end (delta: 22.5 MB). Free memory was 100.4 MB in the beginning and 199.8 MB in the end (delta: -99.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 98401.06 ms. Allocated memory was 252.7 MB in the beginning and 888.7 MB in the end (delta: 636.0 MB). Free memory was 199.8 MB in the beginning and 72.5 MB in the end (delta: 127.3 MB). Peak memory consumption was 763.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34279.26 ms. Allocated memory was 888.7 MB in the beginning and 1.3 GB in the end (delta: 415.8 MB). Free memory was 72.5 MB in the beginning and 588.5 MB in the end (delta: -516.0 MB). There was no memory consumed. 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...