java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:56:28,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:56:28,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:56:28,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:56:28,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:56:28,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:56:28,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:56:28,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:56:28,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:56:28,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:56:28,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:56:28,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:56:28,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:56:28,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:56:28,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:56:28,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:56:28,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:56:28,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:56:28,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:56:28,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:56:28,370 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 00:56:28,390 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:56:28,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:56:28,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:56:28,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:56:28,394 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:56:28,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:56:28,394 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:56:28,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:56:28,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:56:28,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:56:28,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:56:28,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:56:28,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:56:28,397 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:56:28,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:56:28,398 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:56:28,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:56:28,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:56:28,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:56:28,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:56:28,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:56:28,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:56:28,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:56:28,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:56:28,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:56:28,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:56:28,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:56:28,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:56:28,400 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 00:56:28,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:56:28,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:56:28,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:56:28,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:56:28,696 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:56:28,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2019-10-07 00:56:28,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5465876/e43a7e2a7ed44595a68a7d875d05cc82/FLAG3f4068a4e [2019-10-07 00:56:29,360 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:56:29,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2019-10-07 00:56:29,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5465876/e43a7e2a7ed44595a68a7d875d05cc82/FLAG3f4068a4e [2019-10-07 00:56:29,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5465876/e43a7e2a7ed44595a68a7d875d05cc82 [2019-10-07 00:56:29,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:56:29,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:56:29,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:29,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:56:29,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:56:29,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:29" (1/1) ... [2019-10-07 00:56:29,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c786d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:29, skipping insertion in model container [2019-10-07 00:56:29,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:56:29" (1/1) ... [2019-10-07 00:56:29,653 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:56:29,708 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:56:30,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:30,290 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:56:30,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:56:30,395 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:56:30,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30 WrapperNode [2019-10-07 00:56:30,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:56:30,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:56:30,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:56:30,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:56:30,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (1/1) ... [2019-10-07 00:56:30,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:56:30,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:56:30,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:56:30,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:56:30,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (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 00:56:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:56:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:56:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:56:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:56:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:56:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:56:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:56:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:56:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:56:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:56:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:56:32,363 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:56:32,363 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:56:32,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:32 BoogieIcfgContainer [2019-10-07 00:56:32,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:56:32,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:56:32,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:56:32,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:56:32,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:56:29" (1/3) ... [2019-10-07 00:56:32,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7733bda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:32, skipping insertion in model container [2019-10-07 00:56:32,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:56:30" (2/3) ... [2019-10-07 00:56:32,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7733bda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:56:32, skipping insertion in model container [2019-10-07 00:56:32,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:56:32" (3/3) ... [2019-10-07 00:56:32,373 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2019-10-07 00:56:32,383 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:56:32,391 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:56:32,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:56:32,428 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:56:32,428 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:56:32,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:56:32,429 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:56:32,432 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:56:32,432 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:56:32,433 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:56:32,433 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:56:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:56:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:56:32,463 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:32,464 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] [2019-10-07 00:56:32,466 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash 826819684, now seen corresponding path program 1 times [2019-10-07 00:56:32,481 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:32,481 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:32,481 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:32,482 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:32,929 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 00:56:32,929 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:32,930 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:32,931 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:56:32,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:56:32,957 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:56:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:33,535 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:56:33,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:33,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:56:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:33,559 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:56:33,559 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:56:33,565 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 00:56:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:56:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:56:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:56:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 285 transitions. [2019-10-07 00:56:33,668 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 285 transitions. Word has length 77 [2019-10-07 00:56:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:33,670 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 285 transitions. [2019-10-07 00:56:33,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 285 transitions. [2019-10-07 00:56:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 00:56:33,681 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:33,681 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:56:33,682 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:33,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1022496549, now seen corresponding path program 1 times [2019-10-07 00:56:33,684 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:33,685 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:33,685 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:33,685 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:33,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:33,868 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:56:33,868 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 00:56:33,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 00:56:33,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 00:56:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 00:56:33,871 INFO L87 Difference]: Start difference. First operand 157 states and 285 transitions. Second operand 5 states. [2019-10-07 00:56:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:34,426 INFO L93 Difference]: Finished difference Result 479 states and 892 transitions. [2019-10-07 00:56:34,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:56:34,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2019-10-07 00:56:34,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:34,436 INFO L225 Difference]: With dead ends: 479 [2019-10-07 00:56:34,436 INFO L226 Difference]: Without dead ends: 327 [2019-10-07 00:56:34,440 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 00:56:34,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-07 00:56:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2019-10-07 00:56:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-10-07 00:56:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 547 transitions. [2019-10-07 00:56:34,491 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 547 transitions. Word has length 86 [2019-10-07 00:56:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:34,491 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 547 transitions. [2019-10-07 00:56:34,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 00:56:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 547 transitions. [2019-10-07 00:56:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-07 00:56:34,495 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:34,496 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:34,496 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:34,496 INFO L82 PathProgramCache]: Analyzing trace with hash -311202744, now seen corresponding path program 1 times [2019-10-07 00:56:34,497 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:34,497 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:34,497 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:34,497 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:34,631 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:34,632 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:34,632 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 00:56:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:34,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:56:34,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 00:56:34,836 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 00:56:34,913 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 00:56:34,913 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-07 00:56:34,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:56:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:56:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:56:34,917 INFO L87 Difference]: Start difference. First operand 317 states and 547 transitions. Second operand 3 states. [2019-10-07 00:56:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:56:35,320 INFO L93 Difference]: Finished difference Result 935 states and 1648 transitions. [2019-10-07 00:56:35,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:56:35,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-10-07 00:56:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:56:35,331 INFO L225 Difference]: With dead ends: 935 [2019-10-07 00:56:35,332 INFO L226 Difference]: Without dead ends: 623 [2019-10-07 00:56:35,334 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 00:56:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-07 00:56:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-07 00:56:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-07 00:56:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1060 transitions. [2019-10-07 00:56:35,371 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1060 transitions. Word has length 97 [2019-10-07 00:56:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:56:35,372 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 1060 transitions. [2019-10-07 00:56:35,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:56:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1060 transitions. [2019-10-07 00:56:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 00:56:35,378 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:56:35,379 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1] [2019-10-07 00:56:35,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:35,584 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:56:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:56:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -661428364, now seen corresponding path program 1 times [2019-10-07 00:56:35,585 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:56:35,585 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:35,585 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:35,585 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:56:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:56:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:35,679 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:56:35,679 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:56:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:56:35,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:56:35,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:56:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:35,854 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:56:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:56:35,959 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:56:35,994 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:56:35,995 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:56:36,010 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:56:36,018 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:56:36,018 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:56:36,371 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 96 for LOIs [2019-10-07 00:56:36,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:56:36,848 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 00:56:36,855 INFO L168 Benchmark]: Toolchain (without parser) took 7217.78 ms. Allocated memory was 146.3 MB in the beginning and 292.0 MB in the end (delta: 145.8 MB). Free memory was 101.5 MB in the beginning and 98.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 148.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,856 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.01 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 172.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,858 INFO L168 Benchmark]: Boogie Preprocessor took 120.63 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 166.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,860 INFO L168 Benchmark]: RCFGBuilder took 1847.52 ms. Allocated memory was 206.0 MB in the beginning and 250.1 MB in the end (delta: 44.0 MB). Free memory was 166.6 MB in the beginning and 213.1 MB in the end (delta: -46.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,861 INFO L168 Benchmark]: TraceAbstraction took 4486.10 ms. Allocated memory was 250.1 MB in the beginning and 292.0 MB in the end (delta: 41.9 MB). Free memory was 211.3 MB in the beginning and 98.3 MB in the end (delta: 113.0 MB). Peak memory consumption was 154.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:56:36,866 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.01 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 172.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.63 ms. Allocated memory is still 206.0 MB. Free memory was 172.1 MB in the beginning and 166.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1847.52 ms. Allocated memory was 206.0 MB in the beginning and 250.1 MB in the end (delta: 44.0 MB). Free memory was 166.6 MB in the beginning and 213.1 MB in the end (delta: -46.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4486.10 ms. Allocated memory was 250.1 MB in the beginning and 292.0 MB in the end (delta: 41.9 MB). Free memory was 211.3 MB in the beginning and 98.3 MB in the end (delta: 113.0 MB). Peak memory consumption was 154.9 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...