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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:45:54,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:45:54,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:45:54,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 03:45:54,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:45:54,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:45:54,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:45:54,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:45:54,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:45:54,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:45:54,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:45:54,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:45:54,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:45:54,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:45:54,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:45:54,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:45:54,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 03:45:54,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:45:54,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:45:54,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:45:54,552 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 03:45:54,581 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:45:54,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:45:54,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:45:54,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:45:54,584 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:45:54,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:45:54,584 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:45:54,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:45:54,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:45:54,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:45:54,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:45:54,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:45:54,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:45:54,586 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:45:54,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:45:54,586 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:45:54,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:45:54,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:45:54,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:45:54,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:45:54,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:45:54,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:45:54,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:45:54,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:45:54,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:45:54,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:45:54,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:45:54,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:45:54,588 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 03:45:54,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:45:54,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:45:54,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:45:54,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:45:54,889 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:45:54,890 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-10-07 03:45:54,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6249de2cc/1268afdf9b2141feb206b4d796974813/FLAGc791ec26a [2019-10-07 03:45:55,723 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:45:55,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label41.c [2019-10-07 03:45:55,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6249de2cc/1268afdf9b2141feb206b4d796974813/FLAGc791ec26a [2019-10-07 03:45:55,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6249de2cc/1268afdf9b2141feb206b4d796974813 [2019-10-07 03:45:55,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:45:55,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:45:55,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:45:55,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:45:55,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:45:55,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:45:55" (1/1) ... [2019-10-07 03:45:55,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dc529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:55, skipping insertion in model container [2019-10-07 03:45:55,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:45:55" (1/1) ... [2019-10-07 03:45:55,927 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:45:56,046 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:45:57,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:45:57,447 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:45:57,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:45:58,001 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:45:58,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58 WrapperNode [2019-10-07 03:45:58,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:45:58,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:45:58,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:45:58,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:45:58,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (1/1) ... [2019-10-07 03:45:58,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:45:58,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:45:58,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:45:58,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:45:58,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (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 03:45:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:45:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:45:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:45:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:45:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:45:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:45:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:45:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:45:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:45:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:45:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:45:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:45:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:45:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:45:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:47:35,022 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:47:35,023 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:47:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:47:35 BoogieIcfgContainer [2019-10-07 03:47:35,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:47:35,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:47:35,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:47:35,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:47:35,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:45:55" (1/3) ... [2019-10-07 03:47:35,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690ac54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:47:35, skipping insertion in model container [2019-10-07 03:47:35,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:45:58" (2/3) ... [2019-10-07 03:47:35,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690ac54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:47:35, skipping insertion in model container [2019-10-07 03:47:35,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:47:35" (3/3) ... [2019-10-07 03:47:35,034 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label41.c [2019-10-07 03:47:35,043 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:47:35,052 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:47:35,063 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:47:35,095 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:47:35,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:47:35,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:47:35,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:47:35,096 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:47:35,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:47:35,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:47:35,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:47:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:47:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:47:35,130 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:47:35,131 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:47:35,133 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:47:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:47:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1816948390, now seen corresponding path program 1 times [2019-10-07 03:47:35,148 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:47:35,148 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:35,148 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:35,149 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:47:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:47:35,398 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 03:47:35,399 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:35,399 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:47:35,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:47:35,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:47:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:47:35,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:47:35,422 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:47:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:47:39,271 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:47:39,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:47:39,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:47:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:47:39,297 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:47:39,298 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:47:39,308 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 03:47:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:47:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 899. [2019-10-07 03:47:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-07 03:47:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1739 transitions. [2019-10-07 03:47:39,435 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1739 transitions. Word has length 11 [2019-10-07 03:47:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:47:39,438 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1739 transitions. [2019-10-07 03:47:39,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:47:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1739 transitions. [2019-10-07 03:47:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 03:47:39,440 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:47:39,441 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] [2019-10-07 03:47:39,441 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:47:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:47:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1409607607, now seen corresponding path program 1 times [2019-10-07 03:47:39,442 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:47:39,442 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:39,442 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:39,442 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:47:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:47:39,543 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 03:47:39,544 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:39,544 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:47:39,544 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:47:39,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:47:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:47:39,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:47:39,547 INFO L87 Difference]: Start difference. First operand 899 states and 1739 transitions. Second operand 6 states. [2019-10-07 03:47:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:47:44,119 INFO L93 Difference]: Finished difference Result 2721 states and 5303 transitions. [2019-10-07 03:47:44,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:47:44,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-07 03:47:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:47:44,140 INFO L225 Difference]: With dead ends: 2721 [2019-10-07 03:47:44,140 INFO L226 Difference]: Without dead ends: 1827 [2019-10-07 03:47:44,144 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 03:47:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2019-10-07 03:47:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1807. [2019-10-07 03:47:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2019-10-07 03:47:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3130 transitions. [2019-10-07 03:47:44,260 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3130 transitions. Word has length 25 [2019-10-07 03:47:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:47:44,261 INFO L462 AbstractCegarLoop]: Abstraction has 1807 states and 3130 transitions. [2019-10-07 03:47:44,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:47:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3130 transitions. [2019-10-07 03:47:44,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 03:47:44,263 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:47:44,263 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] [2019-10-07 03:47:44,263 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:47:44,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:47:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1820671372, now seen corresponding path program 1 times [2019-10-07 03:47:44,266 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:47:44,266 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:44,266 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:44,267 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:47:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:47:44,373 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 03:47:44,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:44,374 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:47:44,374 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:47:44,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:47:44,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:47:44,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:47:44,375 INFO L87 Difference]: Start difference. First operand 1807 states and 3130 transitions. Second operand 6 states. [2019-10-07 03:47:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:47:56,124 INFO L93 Difference]: Finished difference Result 7362 states and 13456 transitions. [2019-10-07 03:47:56,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 03:47:56,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-07 03:47:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:47:56,177 INFO L225 Difference]: With dead ends: 7362 [2019-10-07 03:47:56,178 INFO L226 Difference]: Without dead ends: 5560 [2019-10-07 03:47:56,185 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:47:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2019-10-07 03:47:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5365. [2019-10-07 03:47:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5365 states. [2019-10-07 03:47:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 8490 transitions. [2019-10-07 03:47:56,434 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 8490 transitions. Word has length 28 [2019-10-07 03:47:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:47:56,434 INFO L462 AbstractCegarLoop]: Abstraction has 5365 states and 8490 transitions. [2019-10-07 03:47:56,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:47:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 8490 transitions. [2019-10-07 03:47:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 03:47:56,437 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:47:56,437 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:47:56,437 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:47:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:47:56,438 INFO L82 PathProgramCache]: Analyzing trace with hash -864304145, now seen corresponding path program 1 times [2019-10-07 03:47:56,438 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:47:56,438 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:56,438 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:56,438 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:47:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:47:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:47:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:47:56,585 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:47:56,585 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:47:56,585 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 03:47:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:47:56,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:47:56,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:47:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:47:56,780 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:47:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:47:56,887 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:47:56,887 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:47:56,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:47:56,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:47:56,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:47:56,889 INFO L87 Difference]: Start difference. First operand 5365 states and 8490 transitions. Second operand 5 states. [2019-10-07 03:48:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:01,273 INFO L93 Difference]: Finished difference Result 13497 states and 21501 transitions. [2019-10-07 03:48:01,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:48:01,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-07 03:48:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:01,322 INFO L225 Difference]: With dead ends: 13497 [2019-10-07 03:48:01,323 INFO L226 Difference]: Without dead ends: 8137 [2019-10-07 03:48:01,343 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:48:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2019-10-07 03:48:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 7829. [2019-10-07 03:48:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7829 states. [2019-10-07 03:48:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7829 states to 7829 states and 11771 transitions. [2019-10-07 03:48:01,605 INFO L78 Accepts]: Start accepts. Automaton has 7829 states and 11771 transitions. Word has length 38 [2019-10-07 03:48:01,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:01,605 INFO L462 AbstractCegarLoop]: Abstraction has 7829 states and 11771 transitions. [2019-10-07 03:48:01,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:48:01,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7829 states and 11771 transitions. [2019-10-07 03:48:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-07 03:48:01,617 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:01,617 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:01,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:01,823 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:01,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:01,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1421099832, now seen corresponding path program 1 times [2019-10-07 03:48:01,825 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:01,825 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:01,825 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:01,826 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:02,035 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:02,036 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:48:02,036 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 03:48:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:02,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:48:02,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:48:02,166 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 03:48:02,167 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:48:02,197 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 03:48:02,198 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 03:48:02,198 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-07 03:48:02,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:48:02,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:48:02,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:48:02,199 INFO L87 Difference]: Start difference. First operand 7829 states and 11771 transitions. Second operand 4 states. [2019-10-07 03:48:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:08,883 INFO L93 Difference]: Finished difference Result 21478 states and 32942 transitions. [2019-10-07 03:48:08,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:48:08,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2019-10-07 03:48:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:08,946 INFO L225 Difference]: With dead ends: 21478 [2019-10-07 03:48:08,946 INFO L226 Difference]: Without dead ends: 13654 [2019-10-07 03:48:08,972 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:48:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2019-10-07 03:48:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 10833. [2019-10-07 03:48:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10833 states. [2019-10-07 03:48:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10833 states to 10833 states and 14667 transitions. [2019-10-07 03:48:09,321 INFO L78 Accepts]: Start accepts. Automaton has 10833 states and 14667 transitions. Word has length 74 [2019-10-07 03:48:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:09,324 INFO L462 AbstractCegarLoop]: Abstraction has 10833 states and 14667 transitions. [2019-10-07 03:48:09,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:48:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10833 states and 14667 transitions. [2019-10-07 03:48:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 03:48:09,328 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:09,328 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:09,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:09,534 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1673571654, now seen corresponding path program 1 times [2019-10-07 03:48:09,535 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:09,535 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:09,535 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:09,535 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:09,776 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:09,776 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:48:09,776 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 03:48:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:09,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:48:09,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:48:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-07 03:48:09,968 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:48:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-07 03:48:10,045 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 03:48:10,045 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 03:48:10,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:48:10,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:48:10,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:48:10,048 INFO L87 Difference]: Start difference. First operand 10833 states and 14667 transitions. Second operand 3 states. [2019-10-07 03:48:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:12,942 INFO L93 Difference]: Finished difference Result 25668 states and 35924 transitions. [2019-10-07 03:48:12,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:48:12,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-07 03:48:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:13,008 INFO L225 Difference]: With dead ends: 25668 [2019-10-07 03:48:13,008 INFO L226 Difference]: Without dead ends: 14840 [2019-10-07 03:48:13,038 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:48:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14840 states. [2019-10-07 03:48:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14840 to 13793. [2019-10-07 03:48:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13793 states. [2019-10-07 03:48:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 18741 transitions. [2019-10-07 03:48:13,572 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 18741 transitions. Word has length 121 [2019-10-07 03:48:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:13,573 INFO L462 AbstractCegarLoop]: Abstraction has 13793 states and 18741 transitions. [2019-10-07 03:48:13,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:48:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 18741 transitions. [2019-10-07 03:48:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-07 03:48:13,583 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:13,584 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:13,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:13,796 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash 270111554, now seen corresponding path program 1 times [2019-10-07 03:48:13,798 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:13,798 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:13,798 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:13,798 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 65 proven. 48 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-07 03:48:13,976 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:13,976 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:48:13,976 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 03:48:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:14,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:48:14,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:48:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:48:14,230 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:48:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 65 proven. 48 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-07 03:48:14,339 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:48:14,372 INFO L162 IcfgInterpreter]: Started Sifa with 75 locations of interest [2019-10-07 03:48:14,372 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:48:14,379 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:48:14,386 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:48:14,387 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:48:14,545 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2019-10-07 03:48:14,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-07 03:48:15,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-07 03:48:15,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:15,632 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 03:48:15,641 INFO L168 Benchmark]: Toolchain (without parser) took 139729.13 ms. Allocated memory was 145.8 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 93.5 MB in the beginning and 352.0 MB in the end (delta: -258.5 MB). Peak memory consumption was 931.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:15,642 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 03:48:15,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2090.76 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 93.5 MB in the beginning and 108.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:15,645 INFO L168 Benchmark]: Boogie Preprocessor took 352.78 ms. Allocated memory was 234.4 MB in the beginning and 252.7 MB in the end (delta: 18.4 MB). Free memory was 108.2 MB in the beginning and 203.2 MB in the end (delta: -95.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:15,652 INFO L168 Benchmark]: RCFGBuilder took 96668.83 ms. Allocated memory was 252.7 MB in the beginning and 953.2 MB in the end (delta: 700.4 MB). Free memory was 203.2 MB in the beginning and 175.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 728.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:15,653 INFO L168 Benchmark]: TraceAbstraction took 40610.40 ms. Allocated memory was 953.2 MB in the beginning and 1.3 GB in the end (delta: 382.7 MB). Free memory was 175.1 MB in the beginning and 352.0 MB in the end (delta: -176.9 MB). Peak memory consumption was 205.8 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:15,666 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2090.76 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 93.5 MB in the beginning and 108.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 352.78 ms. Allocated memory was 234.4 MB in the beginning and 252.7 MB in the end (delta: 18.4 MB). Free memory was 108.2 MB in the beginning and 203.2 MB in the end (delta: -95.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 96668.83 ms. Allocated memory was 252.7 MB in the beginning and 953.2 MB in the end (delta: 700.4 MB). Free memory was 203.2 MB in the beginning and 175.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 728.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40610.40 ms. Allocated memory was 953.2 MB in the beginning and 1.3 GB in the end (delta: 382.7 MB). Free memory was 175.1 MB in the beginning and 352.0 MB in the end (delta: -176.9 MB). Peak memory consumption was 205.8 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...