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/Problem16_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:57,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:57,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:57,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:57,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:57,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:57,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:57,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:57,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:57,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:57,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:57,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:57,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:57,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:57,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:57,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:57,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:57,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:57,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:57,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:57,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:57,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:57,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:57,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:57,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:52:57,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:57,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:57,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:57,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:52:57,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:57,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:57,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:57,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:57,309 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:57,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:57,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:57,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:57,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:57,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:57,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:57,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:57,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:57,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:57,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:57,311 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:57,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:57,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:57,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:57,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:57,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:57,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:57,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:57,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:57,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:57,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:57,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:57,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:57,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:52:57,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:57,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:57,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:57,585 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:57,586 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:57,587 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2019-10-13 21:52:57,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60dc6a70/f8fa7c3ca8bf45dda0520ef1247aaa6b/FLAG6e282a751 [2019-10-13 21:52:58,297 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:58,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2019-10-13 21:52:58,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60dc6a70/f8fa7c3ca8bf45dda0520ef1247aaa6b/FLAG6e282a751 [2019-10-13 21:52:58,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60dc6a70/f8fa7c3ca8bf45dda0520ef1247aaa6b [2019-10-13 21:52:58,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:58,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:58,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:58,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:58,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:58,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:58" (1/1) ... [2019-10-13 21:52:58,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:58, skipping insertion in model container [2019-10-13 21:52:58,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:58" (1/1) ... [2019-10-13 21:52:58,521 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:58,612 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:59,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:59,586 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:53:00,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:53:00,054 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:53:00,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00 WrapperNode [2019-10-13 21:53:00,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:53:00,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:53:00,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:53:00,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:53:00,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... [2019-10-13 21:53:00,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:53:00,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:53:00,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:53:00,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:53:00,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:53:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:53:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:53:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:53:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:53:00,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:53:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:53:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:53:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:53:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:53:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:53:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:53:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:53:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:53:21,294 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:53:21,295 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:53:21,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:21 BoogieIcfgContainer [2019-10-13 21:53:21,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:53:21,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:53:21,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:53:21,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:53:21,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:58" (1/3) ... [2019-10-13 21:53:21,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458aa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:21, skipping insertion in model container [2019-10-13 21:53:21,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:00" (2/3) ... [2019-10-13 21:53:21,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3458aa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:21, skipping insertion in model container [2019-10-13 21:53:21,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:21" (3/3) ... [2019-10-13 21:53:21,305 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label02.c [2019-10-13 21:53:21,315 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:53:21,323 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:53:21,335 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:53:21,362 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:53:21,362 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:53:21,362 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:53:21,362 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:53:21,363 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:53:21,363 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:53:21,363 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:53:21,363 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:53:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:53:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:53:21,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:21,394 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:21,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash 863568447, now seen corresponding path program 1 times [2019-10-13 21:53:21,410 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:21,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274700006] [2019-10-13 21:53:21,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:21,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:21,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:53:21,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274700006] [2019-10-13 21:53:21,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:53:21,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:53:21,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755782219] [2019-10-13 21:53:21,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:53:21,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:53:21,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:53:21,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:53:21,791 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:53:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:53:26,652 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:53:26,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:53:26,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:53:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:53:26,678 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:53:26,678 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:53:26,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:53:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:53:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 690. [2019-10-13 21:53:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:53:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1275 transitions. [2019-10-13 21:53:26,796 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1275 transitions. Word has length 11 [2019-10-13 21:53:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:53:26,797 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1275 transitions. [2019-10-13 21:53:26,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:53:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1275 transitions. [2019-10-13 21:53:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:53:26,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:26,801 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:26,802 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash 170556594, now seen corresponding path program 1 times [2019-10-13 21:53:26,802 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:26,803 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921701875] [2019-10-13 21:53:26,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:26,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:26,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:53:26,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921701875] [2019-10-13 21:53:26,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:53:26,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:53:26,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629095341] [2019-10-13 21:53:26,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:53:26,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:53:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:53:26,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:53:26,957 INFO L87 Difference]: Start difference. First operand 690 states and 1275 transitions. Second operand 6 states. [2019-10-13 21:53:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:53:29,705 INFO L93 Difference]: Finished difference Result 2086 states and 3932 transitions. [2019-10-13 21:53:29,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:53:29,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-13 21:53:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:53:29,722 INFO L225 Difference]: With dead ends: 2086 [2019-10-13 21:53:29,723 INFO L226 Difference]: Without dead ends: 1401 [2019-10-13 21:53:29,729 INFO L600 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 [2019-10-13 21:53:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-13 21:53:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1372. [2019-10-13 21:53:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-13 21:53:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2424 transitions. [2019-10-13 21:53:29,842 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2424 transitions. Word has length 22 [2019-10-13 21:53:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:53:29,842 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 2424 transitions. [2019-10-13 21:53:29,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:53:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2424 transitions. [2019-10-13 21:53:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 21:53:29,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:29,845 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:29,845 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2098112496, now seen corresponding path program 1 times [2019-10-13 21:53:29,846 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:29,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139787814] [2019-10-13 21:53:29,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:29,847 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:29,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:30,041 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2019-10-13 21:53:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:53:30,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139787814] [2019-10-13 21:53:30,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919029679] [2019-10-13 21:53:30,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:53:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:30,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:53:30,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:53:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:53:30,279 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:53:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:53:30,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:53:30,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-10-13 21:53:30,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142686236] [2019-10-13 21:53:30,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:53:30,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:53:30,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:53:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:53:30,355 INFO L87 Difference]: Start difference. First operand 1372 states and 2424 transitions. Second operand 5 states. [2019-10-13 21:53:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:53:32,554 INFO L93 Difference]: Finished difference Result 3452 states and 6233 transitions. [2019-10-13 21:53:32,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:53:32,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 21:53:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:53:32,571 INFO L225 Difference]: With dead ends: 3452 [2019-10-13 21:53:32,571 INFO L226 Difference]: Without dead ends: 2085 [2019-10-13 21:53:32,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:53:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2019-10-13 21:53:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2039. [2019-10-13 21:53:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2019-10-13 21:53:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3115 transitions. [2019-10-13 21:53:32,657 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3115 transitions. Word has length 38 [2019-10-13 21:53:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:53:32,658 INFO L462 AbstractCegarLoop]: Abstraction has 2039 states and 3115 transitions. [2019-10-13 21:53:32,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:53:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3115 transitions. [2019-10-13 21:53:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 21:53:32,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:53:32,669 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:53:32,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:53:32,873 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:53:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:53:32,874 INFO L82 PathProgramCache]: Analyzing trace with hash -250214050, now seen corresponding path program 1 times [2019-10-13 21:53:32,875 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:53:32,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833613369] [2019-10-13 21:53:32,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:32,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:53:32,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:53:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:53:33,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833613369] [2019-10-13 21:53:33,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469309006] [2019-10-13 21:53:33,029 INFO L94 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 [2019-10-13 21:53:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:53:33,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:53:33,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:53:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:53:33,179 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:53:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:53:33,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026392429] [2019-10-13 21:53:33,284 INFO L162 IcfgInterpreter]: Started Sifa with 39 locations of interest [2019-10-13 21:53:33,285 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:53:33,291 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:53:33,300 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:53:33,300 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:53:33,513 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 55 for LOIs [2019-10-13 21:53:33,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 55 [2019-10-13 21:53:34,379 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5744 conjuctions. This might take some time... [2019-10-13 21:53:34,455 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 55 [2019-10-13 21:53:34,663 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5744 conjuctions. This might take some time... [2019-10-13 21:53:34,709 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-13 21:53:34,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-13 21:53:35,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:53:35,015 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:53:35,021 INFO L168 Benchmark]: Toolchain (without parser) took 36517.43 ms. Allocated memory was 137.9 MB in the beginning and 428.9 MB in the end (delta: 291.0 MB). Free memory was 96.9 MB in the beginning and 76.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 311.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,024 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1549.95 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 96.7 MB in the beginning and 126.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,028 INFO L168 Benchmark]: Boogie Preprocessor took 222.35 ms. Allocated memory is still 203.9 MB. Free memory was 126.8 MB in the beginning and 116.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,029 INFO L168 Benchmark]: RCFGBuilder took 21018.56 ms. Allocated memory was 203.9 MB in the beginning and 298.8 MB in the end (delta: 94.9 MB). Free memory was 116.1 MB in the beginning and 86.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 139.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,030 INFO L168 Benchmark]: TraceAbstraction took 13721.79 ms. Allocated memory was 298.8 MB in the beginning and 428.9 MB in the end (delta: 130.0 MB). Free memory was 86.4 MB in the beginning and 76.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:53:35,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1549.95 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 96.7 MB in the beginning and 126.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.35 ms. Allocated memory is still 203.9 MB. Free memory was 126.8 MB in the beginning and 116.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 21018.56 ms. Allocated memory was 203.9 MB in the beginning and 298.8 MB in the end (delta: 94.9 MB). Free memory was 116.1 MB in the beginning and 86.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 139.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13721.79 ms. Allocated memory was 298.8 MB in the beginning and 428.9 MB in the end (delta: 130.0 MB). Free memory was 86.4 MB in the beginning and 76.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...