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/Problem18_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:46:29,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:46:29,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:46:29,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:46:29,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:46:29,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:46:29,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:46:29,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:46:29,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:46:29,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:46:29,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:46:29,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:46:29,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:46:29,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:46:29,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:46:29,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:46:29,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:46:29,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:46:29,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:46:29,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:46:29,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:46:29,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:46:29,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:46:29,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:46:29,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:46:29,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:46:29,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:46:29,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:46:29,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:46:29,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:46:29,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:46:29,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:46:29,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:46:29,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:46:29,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:46:29,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:46:29,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:46:29,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:46:29,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:46:29,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:46:29,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:46:29,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 03:46:29,233 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:46:29,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:46:29,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:46:29,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:46:29,236 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:46:29,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:46:29,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:46:29,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:46:29,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:46:29,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:46:29,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:46:29,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:46:29,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:46:29,239 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:46:29,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:46:29,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:46:29,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:46:29,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:46:29,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:46:29,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:46:29,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:46:29,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:46:29,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:46:29,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:46:29,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:46:29,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:46:29,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:46:29,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:46:29,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 03:46:29,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:46:29,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:46:29,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:46:29,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:46:29,532 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:46:29,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-07 03:46:29,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9da8f5a/99e792ca9a72473fa819088ded3e30b6/FLAG7de051fb3 [2019-10-07 03:46:30,358 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:46:30,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-07 03:46:30,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9da8f5a/99e792ca9a72473fa819088ded3e30b6/FLAG7de051fb3 [2019-10-07 03:46:30,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9da8f5a/99e792ca9a72473fa819088ded3e30b6 [2019-10-07 03:46:30,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:46:30,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:46:30,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:46:30,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:46:30,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:46:30,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:46:30" (1/1) ... [2019-10-07 03:46:30,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2b4d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:30, skipping insertion in model container [2019-10-07 03:46:30,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:46:30" (1/1) ... [2019-10-07 03:46:30,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:46:30,593 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:46:32,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:46:32,088 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:46:32,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:46:32,622 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:46:32,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32 WrapperNode [2019-10-07 03:46:32,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:46:32,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:46:32,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:46:32,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:46:32,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... [2019-10-07 03:46:32,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:46:32,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:46:32,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:46:32,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:46:32,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:46:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:46:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:46:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:46:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:46:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:46:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:46:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:46:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:46:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:46:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:46:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:46:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:46:32,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:46:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:46:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:48:00,643 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:48:00,644 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:48:00,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:00 BoogieIcfgContainer [2019-10-07 03:48:00,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:48:00,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:48:00,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:48:00,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:48:00,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:46:30" (1/3) ... [2019-10-07 03:48:00,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2e47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:00, skipping insertion in model container [2019-10-07 03:48:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:46:32" (2/3) ... [2019-10-07 03:48:00,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2e47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:00, skipping insertion in model container [2019-10-07 03:48:00,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:00" (3/3) ... [2019-10-07 03:48:00,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2019-10-07 03:48:00,664 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:48:00,673 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:48:00,684 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:48:00,716 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:48:00,716 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:48:00,717 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:48:00,717 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:48:00,717 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:48:00,717 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:48:00,717 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:48:00,718 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:48:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:48:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:48:00,754 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:00,755 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:00,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1816949670, now seen corresponding path program 1 times [2019-10-07 03:48:00,775 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:00,775 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:00,776 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:00,776 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:01,044 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:01,045 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:48:01,046 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 03:48:01,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 03:48:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 03:48:01,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 03:48:01,067 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 4 states. [2019-10-07 03:48:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:06,106 INFO L93 Difference]: Finished difference Result 1853 states and 3640 transitions. [2019-10-07 03:48:06,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 03:48:06,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-07 03:48:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:06,137 INFO L225 Difference]: With dead ends: 1853 [2019-10-07 03:48:06,137 INFO L226 Difference]: Without dead ends: 1377 [2019-10-07 03:48:06,147 INFO L606 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 [2019-10-07 03:48:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2019-10-07 03:48:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1371. [2019-10-07 03:48:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2019-10-07 03:48:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2230 transitions. [2019-10-07 03:48:06,353 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2230 transitions. Word has length 11 [2019-10-07 03:48:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:06,355 INFO L462 AbstractCegarLoop]: Abstraction has 1371 states and 2230 transitions. [2019-10-07 03:48:06,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 03:48:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2230 transitions. [2019-10-07 03:48:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 03:48:06,358 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:06,358 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:06,359 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1594711793, now seen corresponding path program 1 times [2019-10-07 03:48:06,361 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:06,361 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:06,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:06,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:06,516 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:06,516 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:48:06,516 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 03:48:06,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:48:06,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:48:06,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 03:48:06,521 INFO L87 Difference]: Start difference. First operand 1371 states and 2230 transitions. Second operand 5 states. [2019-10-07 03:48:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:10,414 INFO L93 Difference]: Finished difference Result 4156 states and 6879 transitions. [2019-10-07 03:48:10,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:48:10,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-07 03:48:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:10,434 INFO L225 Difference]: With dead ends: 4156 [2019-10-07 03:48:10,435 INFO L226 Difference]: Without dead ends: 2790 [2019-10-07 03:48:10,440 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 03:48:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2019-10-07 03:48:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2725. [2019-10-07 03:48:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2725 states. [2019-10-07 03:48:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4200 transitions. [2019-10-07 03:48:10,528 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4200 transitions. Word has length 21 [2019-10-07 03:48:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:10,528 INFO L462 AbstractCegarLoop]: Abstraction has 2725 states and 4200 transitions. [2019-10-07 03:48:10,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:48:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4200 transitions. [2019-10-07 03:48:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-07 03:48:10,530 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:10,530 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:48:10,530 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1154462396, now seen corresponding path program 1 times [2019-10-07 03:48:10,531 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:10,531 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:10,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:10,532 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:48:10,702 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:10,702 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:48:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:10,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:48:10,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:48:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:48:10,861 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:48:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:48:10,952 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:48:10,953 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 03:48:10,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:48:10,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:48:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 03:48:10,954 INFO L87 Difference]: Start difference. First operand 2725 states and 4200 transitions. Second operand 5 states. [2019-10-07 03:48:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:48:15,467 INFO L93 Difference]: Finished difference Result 8336 states and 13248 transitions. [2019-10-07 03:48:15,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 03:48:15,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-10-07 03:48:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:48:15,503 INFO L225 Difference]: With dead ends: 8336 [2019-10-07 03:48:15,504 INFO L226 Difference]: Without dead ends: 5616 [2019-10-07 03:48:15,513 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-07 03:48:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5616 states. [2019-10-07 03:48:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5616 to 5445. [2019-10-07 03:48:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5445 states. [2019-10-07 03:48:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 7911 transitions. [2019-10-07 03:48:15,681 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 7911 transitions. Word has length 35 [2019-10-07 03:48:15,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:48:15,681 INFO L462 AbstractCegarLoop]: Abstraction has 5445 states and 7911 transitions. [2019-10-07 03:48:15,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:48:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 7911 transitions. [2019-10-07 03:48:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-07 03:48:15,685 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:48:15,685 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 03:48:15,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:15,890 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:48:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:48:15,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1472608734, now seen corresponding path program 1 times [2019-10-07 03:48:15,890 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:48:15,891 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:15,891 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:15,891 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:48:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:48:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:16,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:48:16,056 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:48:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:48:16,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:48:16,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:48:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:16,215 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:48:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:48:16,281 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:48:16,310 INFO L162 IcfgInterpreter]: Started Sifa with 54 locations of interest [2019-10-07 03:48:16,310 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:48:16,317 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:48:16,326 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:48:16,327 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:48:16,518 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2019-10-07 03:48:16,672 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-07 03:48:17,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 54 [2019-10-07 03:48:17,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-07 03:48:17,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-10-07 03:48:18,130 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:48:18,130 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:48:18,137 INFO L168 Benchmark]: Toolchain (without parser) took 107694.36 ms. Allocated memory was 146.3 MB in the beginning and 1.1 GB in the end (delta: 988.3 MB). Free memory was 92.6 MB in the beginning and 701.9 MB in the end (delta: -609.3 MB). Peak memory consumption was 379.0 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,138 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2177.34 ms. Allocated memory was 146.3 MB in the beginning and 228.1 MB in the end (delta: 81.8 MB). Free memory was 92.4 MB in the beginning and 97.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,141 INFO L168 Benchmark]: Boogie Preprocessor took 293.97 ms. Allocated memory was 228.1 MB in the beginning and 256.9 MB in the end (delta: 28.8 MB). Free memory was 97.9 MB in the beginning and 204.1 MB in the end (delta: -106.2 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,142 INFO L168 Benchmark]: RCFGBuilder took 87727.63 ms. Allocated memory was 256.9 MB in the beginning and 1.0 GB in the end (delta: 745.0 MB). Free memory was 204.1 MB in the beginning and 660.6 MB in the end (delta: -456.5 MB). Peak memory consumption was 813.6 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,143 INFO L168 Benchmark]: TraceAbstraction took 17487.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 132.6 MB). Free memory was 660.6 MB in the beginning and 701.9 MB in the end (delta: -41.3 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. [2019-10-07 03:48:18,150 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2177.34 ms. Allocated memory was 146.3 MB in the beginning and 228.1 MB in the end (delta: 81.8 MB). Free memory was 92.4 MB in the beginning and 97.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.97 ms. Allocated memory was 228.1 MB in the beginning and 256.9 MB in the end (delta: 28.8 MB). Free memory was 97.9 MB in the beginning and 204.1 MB in the end (delta: -106.2 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 87727.63 ms. Allocated memory was 256.9 MB in the beginning and 1.0 GB in the end (delta: 745.0 MB). Free memory was 204.1 MB in the beginning and 660.6 MB in the end (delta: -456.5 MB). Peak memory consumption was 813.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17487.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 132.6 MB). Free memory was 660.6 MB in the beginning and 701.9 MB in the end (delta: -41.3 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...