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/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:11,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:58:11,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:58:11,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:58:11,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:11,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:11,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:11,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:11,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:11,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:11,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:11,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:11,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:11,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:11,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:11,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:11,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:58:11,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:11,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:11,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:11,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:58:11,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:11,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:11,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:11,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:11,253 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:11,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:11,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:11,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:11,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:11,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:11,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:11,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:11,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:11,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:11,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:11,255 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:11,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:11,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:11,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:11,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:11,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:11,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:11,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:11,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:11,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:11,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:11,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:11,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:11,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:58:11,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:11,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:11,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:11,552 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:11,553 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:11,553 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2019-10-07 00:58:11,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b484e1a/0e1233ea41704bae98ca4f04043f3e5e/FLAGe94e6aac0 [2019-10-07 00:58:12,229 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:12,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2019-10-07 00:58:12,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b484e1a/0e1233ea41704bae98ca4f04043f3e5e/FLAGe94e6aac0 [2019-10-07 00:58:12,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b484e1a/0e1233ea41704bae98ca4f04043f3e5e [2019-10-07 00:58:12,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:12,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:12,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:12,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:12,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:12,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:12" (1/1) ... [2019-10-07 00:58:12,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d80721f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:12, skipping insertion in model container [2019-10-07 00:58:12,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:12" (1/1) ... [2019-10-07 00:58:12,522 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:12,588 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:58:13,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:13,111 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:58:13,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:13,221 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:58:13,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13 WrapperNode [2019-10-07 00:58:13,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:13,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:58:13,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:58:13,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:58:13,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... [2019-10-07 00:58:13,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:58:13,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:58:13,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:58:13,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:58:13,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:58:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:58:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:58:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:58:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:58:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:58:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:58:15,554 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:58:15,554 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:58:15,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:15 BoogieIcfgContainer [2019-10-07 00:58:15,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:58:15,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:58:15,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:58:15,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:58:15,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:12" (1/3) ... [2019-10-07 00:58:15,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c7aad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:15, skipping insertion in model container [2019-10-07 00:58:15,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:13" (2/3) ... [2019-10-07 00:58:15,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c7aad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:15, skipping insertion in model container [2019-10-07 00:58:15,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:15" (3/3) ... [2019-10-07 00:58:15,565 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2019-10-07 00:58:15,575 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:58:15,583 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:58:15,594 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:58:15,621 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:58:15,621 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:58:15,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:58:15,622 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:58:15,622 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:58:15,622 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:58:15,622 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:58:15,623 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:58:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-07 00:58:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 00:58:15,653 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:15,654 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:15,656 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:15,662 INFO L82 PathProgramCache]: Analyzing trace with hash -219368649, now seen corresponding path program 1 times [2019-10-07 00:58:15,671 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:15,671 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:15,671 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:15,671 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:16,108 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:16,109 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:16,109 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:16,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:16,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:16,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:16,130 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-07 00:58:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:16,751 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-07 00:58:16,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:16,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-07 00:58:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:16,778 INFO L225 Difference]: With dead ends: 273 [2019-10-07 00:58:16,778 INFO L226 Difference]: Without dead ends: 175 [2019-10-07 00:58:16,786 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 00:58:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-07 00:58:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-07 00:58:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-07 00:58:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-07 00:58:16,856 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-07 00:58:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:16,857 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-07 00:58:16,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-07 00:58:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-07 00:58:16,863 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:16,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:16,864 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash -701903428, now seen corresponding path program 1 times [2019-10-07 00:58:16,864 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:16,865 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:16,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:16,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:17,022 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 00:58:17,023 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:17,023 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:17,023 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:17,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:17,026 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-07 00:58:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:17,474 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-10-07 00:58:17,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:17,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-07 00:58:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:17,483 INFO L225 Difference]: With dead ends: 513 [2019-10-07 00:58:17,484 INFO L226 Difference]: Without dead ends: 343 [2019-10-07 00:58:17,490 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-07 00:58:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2019-10-07 00:58:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-07 00:58:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 580 transitions. [2019-10-07 00:58:17,524 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 580 transitions. Word has length 94 [2019-10-07 00:58:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:17,525 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 580 transitions. [2019-10-07 00:58:17,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 580 transitions. [2019-10-07 00:58:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-07 00:58:17,529 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:17,529 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:17,529 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1247412744, now seen corresponding path program 1 times [2019-10-07 00:58:17,530 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:17,530 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:17,530 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:17,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:17,673 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:17,674 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:17,674 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:17,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:17,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:17,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:17,677 INFO L87 Difference]: Start difference. First operand 343 states and 580 transitions. Second operand 3 states. [2019-10-07 00:58:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:18,112 INFO L93 Difference]: Finished difference Result 1017 states and 1776 transitions. [2019-10-07 00:58:18,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:18,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-07 00:58:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:18,127 INFO L225 Difference]: With dead ends: 1017 [2019-10-07 00:58:18,127 INFO L226 Difference]: Without dead ends: 679 [2019-10-07 00:58:18,132 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-07 00:58:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 511. [2019-10-07 00:58:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2019-10-07 00:58:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 811 transitions. [2019-10-07 00:58:18,184 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 811 transitions. Word has length 100 [2019-10-07 00:58:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:18,185 INFO L462 AbstractCegarLoop]: Abstraction has 511 states and 811 transitions. [2019-10-07 00:58:18,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 811 transitions. [2019-10-07 00:58:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-07 00:58:18,190 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:18,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:18,190 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1843556116, now seen corresponding path program 1 times [2019-10-07 00:58:18,191 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:18,191 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:18,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:18,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 00:58:18,341 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:18,341 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:18,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:58:18,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:18,615 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:18,766 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:58:18,799 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-07 00:58:18,800 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:58:18,807 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:58:18,816 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:58:18,816 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:58:19,191 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-07 00:58:19,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:19,723 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:58:19,731 INFO L168 Benchmark]: Toolchain (without parser) took 7226.84 ms. Allocated memory was 136.8 MB in the beginning and 309.3 MB in the end (delta: 172.5 MB). Free memory was 98.9 MB in the beginning and 161.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:19,732 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 00:58:19,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.21 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 98.5 MB in the beginning and 170.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:19,738 INFO L168 Benchmark]: Boogie Preprocessor took 107.39 ms. Allocated memory is still 203.9 MB. Free memory was 170.2 MB in the beginning and 165.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:19,739 INFO L168 Benchmark]: RCFGBuilder took 2225.80 ms. Allocated memory was 203.9 MB in the beginning and 255.3 MB in the end (delta: 51.4 MB). Free memory was 165.1 MB in the beginning and 208.9 MB in the end (delta: -43.8 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:19,740 INFO L168 Benchmark]: TraceAbstraction took 4170.93 ms. Allocated memory was 255.3 MB in the beginning and 309.3 MB in the end (delta: 54.0 MB). Free memory was 206.7 MB in the beginning and 161.4 MB in the end (delta: 45.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:19,750 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.21 ms. Allocated memory was 136.8 MB in the beginning and 203.9 MB in the end (delta: 67.1 MB). Free memory was 98.5 MB in the beginning and 170.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.39 ms. Allocated memory is still 203.9 MB. Free memory was 170.2 MB in the beginning and 165.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2225.80 ms. Allocated memory was 203.9 MB in the beginning and 255.3 MB in the end (delta: 51.4 MB). Free memory was 165.1 MB in the beginning and 208.9 MB in the end (delta: -43.8 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4170.93 ms. Allocated memory was 255.3 MB in the beginning and 309.3 MB in the end (delta: 54.0 MB). Free memory was 206.7 MB in the beginning and 161.4 MB in the end (delta: 45.3 MB). Peak memory consumption was 99.3 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...