java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:55:00,940 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-07 00:55:00,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:55:00,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:55:00,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:55:00,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:55:01,010 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:55:01,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:55:01,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:55:01,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:55:01,012 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:55:01,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:55:01,013 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:55:01,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:55:01,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:55:01,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:55:01,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:55:01,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:55:01,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:55:01,014 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:55:01,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:55:01,015 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:55:01,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:55:01,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:55:01,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:55:01,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:55:01,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:55:01,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:55:01,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:55:01,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:55:01,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:55:01,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:55:01,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:55:01,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:55:01,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:55:01,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:55:01,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:55:01,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:55:01,336 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:55:01,336 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:55:01,337 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-07 00:55:01,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee4be65/31f7535c86c54089b963b8e91c418aed/FLAG2bef097c8 [2019-10-07 00:55:01,978 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:55:01,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2019-10-07 00:55:01,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee4be65/31f7535c86c54089b963b8e91c418aed/FLAG2bef097c8 [2019-10-07 00:55:02,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee4be65/31f7535c86c54089b963b8e91c418aed [2019-10-07 00:55:02,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:55:02,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:55:02,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:02,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:55:02,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:55:02,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:02" (1/1) ... [2019-10-07 00:55:02,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5000c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:02, skipping insertion in model container [2019-10-07 00:55:02,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:55:02" (1/1) ... [2019-10-07 00:55:02,243 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:55:02,308 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:55:02,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:02,926 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:55:03,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:55:03,043 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:55:03,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03 WrapperNode [2019-10-07 00:55:03,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:55:03,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:55:03,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:55:03,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:55:03,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... [2019-10-07 00:55:03,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:55:03,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:55:03,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:55:03,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:55:03,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:55:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:55:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:55:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:55:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:55:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:55:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:55:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:55:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:55:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:55:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:55:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:55:05,131 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:55:05,132 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:55:05,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:05 BoogieIcfgContainer [2019-10-07 00:55:05,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:55:05,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:55:05,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:55:05,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:55:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:55:02" (1/3) ... [2019-10-07 00:55:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0e90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:05, skipping insertion in model container [2019-10-07 00:55:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:55:03" (2/3) ... [2019-10-07 00:55:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0e90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:55:05, skipping insertion in model container [2019-10-07 00:55:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:55:05" (3/3) ... [2019-10-07 00:55:05,176 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2019-10-07 00:55:05,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:55:05,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:55:05,215 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:55:05,248 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:55:05,248 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:55:05,248 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:55:05,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:55:05,252 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:55:05,252 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:55:05,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:55:05,253 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:55:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-07 00:55:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 00:55:05,284 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:05,285 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:55:05,288 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:05,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:05,294 INFO L82 PathProgramCache]: Analyzing trace with hash 826816868, now seen corresponding path program 1 times [2019-10-07 00:55:05,304 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:05,304 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:05,305 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:05,305 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:05,785 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:05,785 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:05,786 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:55:05,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:05,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:05,810 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-07 00:55:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:06,270 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-07 00:55:06,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:06,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 00:55:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:06,288 INFO L225 Difference]: With dead ends: 246 [2019-10-07 00:55:06,289 INFO L226 Difference]: Without dead ends: 157 [2019-10-07 00:55:06,294 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-07 00:55:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-07 00:55:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-07 00:55:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2019-10-07 00:55:06,392 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 77 [2019-10-07 00:55:06,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:06,394 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2019-10-07 00:55:06,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2019-10-07 00:55:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-07 00:55:06,403 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:06,403 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:06,403 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1195669765, now seen corresponding path program 1 times [2019-10-07 00:55:06,405 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:06,406 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:06,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:06,406 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:06,573 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:06,573 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:06,574 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:06,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:06,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:06,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:06,578 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 6 states. [2019-10-07 00:55:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:07,186 INFO L93 Difference]: Finished difference Result 402 states and 725 transitions. [2019-10-07 00:55:07,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:55:07,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-07 00:55:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:07,196 INFO L225 Difference]: With dead ends: 402 [2019-10-07 00:55:07,197 INFO L226 Difference]: Without dead ends: 250 [2019-10-07 00:55:07,201 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:55:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-10-07 00:55:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 238. [2019-10-07 00:55:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-10-07 00:55:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 407 transitions. [2019-10-07 00:55:07,224 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 407 transitions. Word has length 87 [2019-10-07 00:55:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:07,224 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 407 transitions. [2019-10-07 00:55:07,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 407 transitions. [2019-10-07 00:55:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-07 00:55:07,227 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:07,227 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:07,228 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:07,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2128691369, now seen corresponding path program 1 times [2019-10-07 00:55:07,228 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:07,228 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:07,229 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:07,229 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:07,317 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:07,317 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:07,317 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:55:07,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:55:07,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:55:07,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:07,318 INFO L87 Difference]: Start difference. First operand 238 states and 407 transitions. Second operand 3 states. [2019-10-07 00:55:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:07,717 INFO L93 Difference]: Finished difference Result 700 states and 1240 transitions. [2019-10-07 00:55:07,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:55:07,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-07 00:55:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:07,723 INFO L225 Difference]: With dead ends: 700 [2019-10-07 00:55:07,723 INFO L226 Difference]: Without dead ends: 467 [2019-10-07 00:55:07,725 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:55:07,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-10-07 00:55:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2019-10-07 00:55:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-07 00:55:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 779 transitions. [2019-10-07 00:55:07,764 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 779 transitions. Word has length 88 [2019-10-07 00:55:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:07,765 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 779 transitions. [2019-10-07 00:55:07,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:55:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 779 transitions. [2019-10-07 00:55:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-07 00:55:07,771 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:07,771 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 00:55:07,772 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:07,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1130434117, now seen corresponding path program 1 times [2019-10-07 00:55:07,772 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:07,773 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:07,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:07,773 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:07,929 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:07,929 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:55:07,930 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:55:07,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:55:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:55:07,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:55:07,931 INFO L87 Difference]: Start difference. First operand 467 states and 779 transitions. Second operand 6 states. [2019-10-07 00:55:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:55:08,542 INFO L93 Difference]: Finished difference Result 1289 states and 2330 transitions. [2019-10-07 00:55:08,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 00:55:08,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-10-07 00:55:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:55:08,558 INFO L225 Difference]: With dead ends: 1289 [2019-10-07 00:55:08,558 INFO L226 Difference]: Without dead ends: 827 [2019-10-07 00:55:08,563 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:55:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-07 00:55:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 799. [2019-10-07 00:55:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-10-07 00:55:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1251 transitions. [2019-10-07 00:55:08,637 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1251 transitions. Word has length 102 [2019-10-07 00:55:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:55:08,637 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1251 transitions. [2019-10-07 00:55:08,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:55:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1251 transitions. [2019-10-07 00:55:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 00:55:08,652 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:55:08,653 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:55:08,653 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:55:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:55:08,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1060653532, now seen corresponding path program 1 times [2019-10-07 00:55:08,654 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:55:08,654 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:08,657 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:08,657 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:55:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:55:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:08,773 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:55:08,773 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:55:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:55:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:55:08,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 00:55:08,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:55:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:08,989 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:55:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:55:09,087 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:55:09,139 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-07 00:55:09,140 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:55:09,146 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:55:09,162 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:55:09,163 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:55:09,516 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 98 for LOIs [2019-10-07 00:55:09,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:55:09,972 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:55:09,982 INFO L168 Benchmark]: Toolchain (without parser) took 7752.96 ms. Allocated memory was 136.3 MB in the beginning and 312.0 MB in the end (delta: 175.6 MB). Free memory was 98.6 MB in the beginning and 99.2 MB in the end (delta: -559.4 kB). Peak memory consumption was 175.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:09,984 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:55:09,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.57 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 98.4 MB in the beginning and 168.3 MB in the end (delta: -69.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:09,987 INFO L168 Benchmark]: Boogie Preprocessor took 160.11 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 163.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:09,989 INFO L168 Benchmark]: RCFGBuilder took 1930.59 ms. Allocated memory was 202.4 MB in the beginning and 231.7 MB in the end (delta: 29.4 MB). Free memory was 163.2 MB in the beginning and 77.3 MB in the end (delta: 85.8 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:09,991 INFO L168 Benchmark]: TraceAbstraction took 4817.17 ms. Allocated memory was 257.4 MB in the beginning and 312.0 MB in the end (delta: 54.5 MB). Free memory was 224.1 MB in the beginning and 99.2 MB in the end (delta: 124.9 MB). Peak memory consumption was 179.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:55:10,007 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 816.57 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 98.4 MB in the beginning and 168.3 MB in the end (delta: -69.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.11 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 163.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1930.59 ms. Allocated memory was 202.4 MB in the beginning and 231.7 MB in the end (delta: 29.4 MB). Free memory was 163.2 MB in the beginning and 77.3 MB in the end (delta: 85.8 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4817.17 ms. Allocated memory was 257.4 MB in the beginning and 312.0 MB in the end (delta: 54.5 MB). Free memory was 224.1 MB in the beginning and 99.2 MB in the end (delta: 124.9 MB). Peak memory consumption was 179.5 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...