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/Problem15_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:11,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:11,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:11,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:11,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:11,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:11,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:11,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:11,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:11,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:11,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:11,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:11,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:11,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:11,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:11,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:11,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:11,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:11,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:11,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:11,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:11,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:11,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:11,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:11,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:52:11,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:11,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:11,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:11,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:52:11,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:11,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:11,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:11,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:11,415 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:11,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:11,415 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:11,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:11,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:11,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:11,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:11,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:11,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:11,416 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:11,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:11,417 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:11,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:11,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:11,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:11,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:11,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:11,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:11,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:11,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:11,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:11,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:11,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:11,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:11,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:52:11,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:11,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:11,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:11,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:11,717 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:11,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label23.c [2019-10-13 21:52:11,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de8a933b/90372072742c46ebb3496c7b07cde7d9/FLAG83de35103 [2019-10-13 21:52:12,483 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:12,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label23.c [2019-10-13 21:52:12,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de8a933b/90372072742c46ebb3496c7b07cde7d9/FLAG83de35103 [2019-10-13 21:52:12,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de8a933b/90372072742c46ebb3496c7b07cde7d9 [2019-10-13 21:52:12,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:12,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:12,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:12,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:12,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:12,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:12" (1/1) ... [2019-10-13 21:52:12,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3bf562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:12, skipping insertion in model container [2019-10-13 21:52:12,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:12" (1/1) ... [2019-10-13 21:52:12,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:12,734 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:13,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:13,690 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:52:14,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:14,037 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:52:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14 WrapperNode [2019-10-13 21:52:14,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:14,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:52:14,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:52:14,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:52:14,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (1/1) ... [2019-10-13 21:52:14,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:52:14,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:52:14,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:52:14,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:52:14,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (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 21:52:14,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:52:14,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:52:14,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:52:14,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:52:14,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:52:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:52:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:52:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:52:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:52:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:52:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:52:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:52:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:52:24,492 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:52:24,492 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:52:24,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:24 BoogieIcfgContainer [2019-10-13 21:52:24,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:52:24,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:52:24,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:52:24,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:52:24,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:12" (1/3) ... [2019-10-13 21:52:24,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616a01af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:24, skipping insertion in model container [2019-10-13 21:52:24,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:14" (2/3) ... [2019-10-13 21:52:24,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616a01af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:24, skipping insertion in model container [2019-10-13 21:52:24,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:24" (3/3) ... [2019-10-13 21:52:24,502 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label23.c [2019-10-13 21:52:24,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:52:24,522 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:52:24,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:52:24,566 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:52:24,567 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:52:24,567 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:52:24,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:52:24,568 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:52:24,568 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:52:24,568 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:52:24,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:52:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:52:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:52:24,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:24,600 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:24,601 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash 648043629, now seen corresponding path program 1 times [2019-10-13 21:52:24,614 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:24,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160706880] [2019-10-13 21:52:24,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:24,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:24,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:24,819 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 21:52:24,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160706880] [2019-10-13 21:52:24,822 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:24,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:24,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055864320] [2019-10-13 21:52:24,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:24,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:24,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:24,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:24,844 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:52:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:32,055 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:52:32,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:32,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:52:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:32,079 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:52:32,080 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:52:32,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:52:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 430. [2019-10-13 21:52:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2019-10-13 21:52:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 821 transitions. [2019-10-13 21:52:32,170 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 821 transitions. Word has length 11 [2019-10-13 21:52:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:32,171 INFO L462 AbstractCegarLoop]: Abstraction has 430 states and 821 transitions. [2019-10-13 21:52:32,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 821 transitions. [2019-10-13 21:52:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:52:32,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:32,173 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:32,173 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:32,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1393104440, now seen corresponding path program 1 times [2019-10-13 21:52:32,174 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:32,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024540889] [2019-10-13 21:52:32,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:32,175 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:32,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:32,324 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 21:52:32,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024540889] [2019-10-13 21:52:32,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:32,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:52:32,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132115236] [2019-10-13 21:52:32,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:52:32,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:32,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:52:32,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:52:32,330 INFO L87 Difference]: Start difference. First operand 430 states and 821 transitions. Second operand 3 states. [2019-10-13 21:52:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:34,658 INFO L93 Difference]: Finished difference Result 1278 states and 2464 transitions. [2019-10-13 21:52:34,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:52:34,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-13 21:52:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:34,666 INFO L225 Difference]: With dead ends: 1278 [2019-10-13 21:52:34,666 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 21:52:34,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:52:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 21:52:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 830. [2019-10-13 21:52:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2019-10-13 21:52:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1325 transitions. [2019-10-13 21:52:34,742 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1325 transitions. Word has length 21 [2019-10-13 21:52:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:34,743 INFO L462 AbstractCegarLoop]: Abstraction has 830 states and 1325 transitions. [2019-10-13 21:52:34,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:52:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1325 transitions. [2019-10-13 21:52:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 21:52:34,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:34,746 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] [2019-10-13 21:52:34,746 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1300577478, now seen corresponding path program 1 times [2019-10-13 21:52:34,748 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:34,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206465554] [2019-10-13 21:52:34,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:34,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:34,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:34,878 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 21:52:34,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206465554] [2019-10-13 21:52:34,879 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:34,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:52:34,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248930597] [2019-10-13 21:52:34,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:52:34,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:34,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:52:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:52:34,883 INFO L87 Difference]: Start difference. First operand 830 states and 1325 transitions. Second operand 5 states. [2019-10-13 21:52:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:38,208 INFO L93 Difference]: Finished difference Result 2524 states and 4093 transitions. [2019-10-13 21:52:38,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:52:38,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 21:52:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:38,228 INFO L225 Difference]: With dead ends: 2524 [2019-10-13 21:52:38,236 INFO L226 Difference]: Without dead ends: 1699 [2019-10-13 21:52:38,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:52:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2019-10-13 21:52:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1368. [2019-10-13 21:52:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1368 states. [2019-10-13 21:52:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1973 transitions. [2019-10-13 21:52:38,304 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1973 transitions. Word has length 38 [2019-10-13 21:52:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:38,305 INFO L462 AbstractCegarLoop]: Abstraction has 1368 states and 1973 transitions. [2019-10-13 21:52:38,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:52:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1973 transitions. [2019-10-13 21:52:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:52:38,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:38,321 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:38,321 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1820237919, now seen corresponding path program 1 times [2019-10-13 21:52:38,322 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:38,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653436656] [2019-10-13 21:52:38,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:38,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:38,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:38,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653436656] [2019-10-13 21:52:38,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691023239] [2019-10-13 21:52:38,619 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 21:52:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:38,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:52:38,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:52:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:38,882 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:52:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:38,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934452894] [2019-10-13 21:52:39,011 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-13 21:52:39,012 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:52:39,017 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:52:39,023 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:52:39,024 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:52:39,184 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-13 21:52:39,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2019-10-13 21:52:39,427 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2019-10-13 21:52:39,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 50 [2019-10-13 21:52:39,929 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8891 conjuctions. This might take some time... [2019-10-13 21:52:40,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 50 [2019-10-13 21:52:40,333 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 8891 conjuctions. This might take some time... [2019-10-13 21:52:40,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:40,726 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 21:52:40,734 INFO L168 Benchmark]: Toolchain (without parser) took 28106.94 ms. Allocated memory was 146.8 MB in the beginning and 461.4 MB in the end (delta: 314.6 MB). Free memory was 98.2 MB in the beginning and 171.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 241.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,736 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1408.67 ms. Allocated memory was 146.8 MB in the beginning and 209.7 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 121.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,742 INFO L168 Benchmark]: Boogie Preprocessor took 208.84 ms. Allocated memory is still 209.7 MB. Free memory was 121.1 MB in the beginning and 108.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,744 INFO L168 Benchmark]: RCFGBuilder took 10246.29 ms. Allocated memory was 209.7 MB in the beginning and 297.8 MB in the end (delta: 88.1 MB). Free memory was 108.0 MB in the beginning and 203.2 MB in the end (delta: -95.1 MB). Peak memory consumption was 114.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,750 INFO L168 Benchmark]: TraceAbstraction took 16234.41 ms. Allocated memory was 297.8 MB in the beginning and 461.4 MB in the end (delta: 163.6 MB). Free memory was 203.2 MB in the beginning and 171.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 195.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:40,761 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1408.67 ms. Allocated memory was 146.8 MB in the beginning and 209.7 MB in the end (delta: 62.9 MB). Free memory was 98.0 MB in the beginning and 121.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 208.84 ms. Allocated memory is still 209.7 MB. Free memory was 121.1 MB in the beginning and 108.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10246.29 ms. Allocated memory was 209.7 MB in the beginning and 297.8 MB in the end (delta: 88.1 MB). Free memory was 108.0 MB in the beginning and 203.2 MB in the end (delta: -95.1 MB). Peak memory consumption was 114.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16234.41 ms. Allocated memory was 297.8 MB in the beginning and 461.4 MB in the end (delta: 163.6 MB). Free memory was 203.2 MB in the beginning and 171.7 MB in the end (delta: 31.5 MB). Peak memory consumption was 195.1 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...