java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:41:34,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:41:34,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:41:34,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:41:34,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:41:34,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:41:34,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:41:34,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:41:34,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:41:34,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:41:34,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:41:34,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:41:34,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:41:34,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:41:34,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:41:34,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:41:34,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:41:34,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:41:34,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:41:34,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:41:34,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:41:34,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:41:34,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:41:34,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:41:34,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:41:34,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:41:34,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:41:34,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:41:34,403 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 21:41:34,425 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:41:34,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:41:34,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:41:34,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:41:34,428 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:41:34,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:41:34,428 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:41:34,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:41:34,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:41:34,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:41:34,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:41:34,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:41:34,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:41:34,431 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:41:34,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:41:34,431 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:41:34,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:41:34,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:41:34,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:41:34,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:41:34,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:41:34,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:41:34,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:41:34,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:41:34,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:41:34,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:41:34,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:41:34,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:41:34,434 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 21:41:34,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:41:34,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:41:34,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:41:34,773 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:41:34,773 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:41:34,774 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2019-10-13 21:41:34,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad6be3f3/7941b2ae98fc4d2387bedcc510149242/FLAG21149bdbf [2019-10-13 21:41:35,415 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:41:35,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2019-10-13 21:41:35,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad6be3f3/7941b2ae98fc4d2387bedcc510149242/FLAG21149bdbf [2019-10-13 21:41:35,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad6be3f3/7941b2ae98fc4d2387bedcc510149242 [2019-10-13 21:41:35,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:41:35,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:41:35,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:35,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:41:35,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:41:35,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:35" (1/1) ... [2019-10-13 21:41:35,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e88111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:35, skipping insertion in model container [2019-10-13 21:41:35,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:41:35" (1/1) ... [2019-10-13 21:41:35,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:41:35,786 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:41:36,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:36,337 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:41:36,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:41:36,461 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:41:36,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36 WrapperNode [2019-10-13 21:41:36,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:41:36,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:41:36,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:41:36,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:41:36,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (1/1) ... [2019-10-13 21:41:36,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:41:36,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:41:36,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:41:36,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:41:36,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (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 21:41:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:41:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:41:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:41:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:41:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:41:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:41:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:41:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:41:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:41:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:41:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:41:38,685 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:41:38,686 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:41:38,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:38 BoogieIcfgContainer [2019-10-13 21:41:38,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:41:38,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:41:38,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:41:38,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:41:38,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:41:35" (1/3) ... [2019-10-13 21:41:38,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23030b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:38, skipping insertion in model container [2019-10-13 21:41:38,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:41:36" (2/3) ... [2019-10-13 21:41:38,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23030b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:41:38, skipping insertion in model container [2019-10-13 21:41:38,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:41:38" (3/3) ... [2019-10-13 21:41:38,696 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2019-10-13 21:41:38,707 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:41:38,715 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:41:38,728 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:41:38,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:41:38,763 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:41:38,763 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:41:38,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:41:38,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:41:38,764 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:41:38,764 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:41:38,764 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:41:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-13 21:41:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 21:41:38,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:38,815 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:38,818 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash 989882550, now seen corresponding path program 1 times [2019-10-13 21:41:38,830 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:38,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551605229] [2019-10-13 21:41:38,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:38,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:38,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:39,286 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 21:41:39,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551605229] [2019-10-13 21:41:39,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:39,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:39,289 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459731806] [2019-10-13 21:41:39,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:39,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:39,314 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-13 21:41:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:39,893 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-13 21:41:39,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:39,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-13 21:41:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:39,918 INFO L225 Difference]: With dead ends: 273 [2019-10-13 21:41:39,918 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 21:41:39,924 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:39,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 21:41:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-13 21:41:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-13 21:41:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 312 transitions. [2019-10-13 21:41:40,031 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 312 transitions. Word has length 86 [2019-10-13 21:41:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:40,033 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 312 transitions. [2019-10-13 21:41:40,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 312 transitions. [2019-10-13 21:41:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:41:40,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:40,048 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:40,049 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash -260139973, now seen corresponding path program 1 times [2019-10-13 21:41:40,051 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:40,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877441775] [2019-10-13 21:41:40,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:40,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:40,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:40,222 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 21:41:40,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877441775] [2019-10-13 21:41:40,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:40,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:41:40,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770161256] [2019-10-13 21:41:40,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:41:40,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:41:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:40,227 INFO L87 Difference]: Start difference. First operand 175 states and 312 transitions. Second operand 3 states. [2019-10-13 21:41:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:40,606 INFO L93 Difference]: Finished difference Result 513 states and 937 transitions. [2019-10-13 21:41:40,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:40,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-13 21:41:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:40,611 INFO L225 Difference]: With dead ends: 513 [2019-10-13 21:41:40,611 INFO L226 Difference]: Without dead ends: 343 [2019-10-13 21:41:40,613 INFO L600 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 [2019-10-13 21:41:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-10-13 21:41:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2019-10-13 21:41:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 21:41:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 580 transitions. [2019-10-13 21:41:40,635 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 580 transitions. Word has length 94 [2019-10-13 21:41:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:40,636 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 580 transitions. [2019-10-13 21:41:40,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 580 transitions. [2019-10-13 21:41:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:41:40,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:40,638 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:40,638 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:40,639 INFO L82 PathProgramCache]: Analyzing trace with hash 731901255, now seen corresponding path program 1 times [2019-10-13 21:41:40,639 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:40,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227883437] [2019-10-13 21:41:40,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:40,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:40,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:40,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227883437] [2019-10-13 21:41:40,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:40,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:41:40,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332816120] [2019-10-13 21:41:40,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:41:40,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:40,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:41:40,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:40,818 INFO L87 Difference]: Start difference. First operand 343 states and 580 transitions. Second operand 4 states. [2019-10-13 21:41:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:41,623 INFO L93 Difference]: Finished difference Result 1353 states and 2401 transitions. [2019-10-13 21:41:41,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:41:41,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2019-10-13 21:41:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:41,633 INFO L225 Difference]: With dead ends: 1353 [2019-10-13 21:41:41,633 INFO L226 Difference]: Without dead ends: 1015 [2019-10-13 21:41:41,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-10-13 21:41:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1015. [2019-10-13 21:41:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2019-10-13 21:41:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1575 transitions. [2019-10-13 21:41:41,719 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1575 transitions. Word has length 100 [2019-10-13 21:41:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:41,720 INFO L462 AbstractCegarLoop]: Abstraction has 1015 states and 1575 transitions. [2019-10-13 21:41:41,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:41:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1575 transitions. [2019-10-13 21:41:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 21:41:41,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:41,725 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:41,725 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:41,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1551389941, now seen corresponding path program 1 times [2019-10-13 21:41:41,726 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:41,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574113227] [2019-10-13 21:41:41,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:41,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:41,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:41,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574113227] [2019-10-13 21:41:41,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887461850] [2019-10-13 21:41:41,843 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 21:41:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:41,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:41,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:42,098 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:42,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69321061] [2019-10-13 21:41:42,227 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-13 21:41:42,228 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:42,234 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:42,243 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:42,244 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:42,544 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 87 for LOIs [2019-10-13 21:41:43,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:43,072 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 21:41:43,079 INFO L168 Benchmark]: Toolchain (without parser) took 7368.33 ms. Allocated memory was 137.9 MB in the beginning and 301.5 MB in the end (delta: 163.6 MB). Free memory was 99.6 MB in the beginning and 94.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 168.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:43,080 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:41:43,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.29 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 163.8 MB in the end (delta: -64.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:43,082 INFO L168 Benchmark]: Boogie Preprocessor took 122.42 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 158.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:43,083 INFO L168 Benchmark]: RCFGBuilder took 2102.80 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 158.8 MB in the beginning and 201.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:43,084 INFO L168 Benchmark]: TraceAbstraction took 4387.21 ms. Allocated memory was 251.7 MB in the beginning and 301.5 MB in the end (delta: 49.8 MB). Free memory was 201.0 MB in the beginning and 94.6 MB in the end (delta: 106.5 MB). Peak memory consumption was 156.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:43,088 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.29 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 163.8 MB in the end (delta: -64.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.42 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 158.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2102.80 ms. Allocated memory was 201.9 MB in the beginning and 251.7 MB in the end (delta: 49.8 MB). Free memory was 158.8 MB in the beginning and 201.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4387.21 ms. Allocated memory was 251.7 MB in the beginning and 301.5 MB in the end (delta: 49.8 MB). Free memory was 201.0 MB in the beginning and 94.6 MB in the end (delta: 106.5 MB). Peak memory consumption was 156.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...