java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:40:54,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:40:54,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:40:54,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:40:54,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:40:54,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:40:54,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:40:54,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:40:54,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:40:54,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:40:54,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:40:54,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:40:54,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:40:54,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:40:54,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:40:54,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:40:54,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:40:54,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:40:54,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:40:54,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:40:54,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:40:54,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:40:54,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:40:54,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:40:54,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:40:54,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:40:54,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:40:54,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:40:54,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:40:54,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:40:54,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:40:54,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:40:54,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:40:54,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:40:54,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:40:54,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:40:54,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:40:54,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:40:54,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:40:54,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:40:54,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:40:54,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:40:54,590 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:40:54,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:40:54,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:40:54,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:40:54,593 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:40:54,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:40:54,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:40:54,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:40:54,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:40:54,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:40:54,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:40:54,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:40:54,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:40:54,597 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:40:54,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:40:54,597 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:40:54,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:40:54,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:40:54,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:40:54,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:40:54,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:40:54,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:54,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:40:54,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:40:54,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:40:54,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:40:54,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:40:54,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:40:54,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:40:54,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:40:54,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:40:54,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:40:54,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:40:54,946 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:40:54,946 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2019-10-13 21:40:55,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d18e6565/ec590f83479444d98cf21a86babf0e4d/FLAGfd52c8d1d [2019-10-13 21:40:55,629 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:40:55,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2019-10-13 21:40:55,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d18e6565/ec590f83479444d98cf21a86babf0e4d/FLAGfd52c8d1d [2019-10-13 21:40:55,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d18e6565/ec590f83479444d98cf21a86babf0e4d [2019-10-13 21:40:55,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:40:55,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:40:55,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:55,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:40:55,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:40:55,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:55" (1/1) ... [2019-10-13 21:40:55,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c786d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:55, skipping insertion in model container [2019-10-13 21:40:55,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:55" (1/1) ... [2019-10-13 21:40:55,917 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:40:55,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:40:56,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:56,499 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:40:56,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:56,647 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:40:56,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56 WrapperNode [2019-10-13 21:40:56,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:56,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:40:56,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:40:56,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:40:56,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... [2019-10-13 21:40:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:40:56,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:40:56,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:40:56,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:40:56,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:40:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:40:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:40:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:40:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:40:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:40:56,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:40:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:40:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:40:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:40:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:40:58,857 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:40:58,858 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:40:58,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:58 BoogieIcfgContainer [2019-10-13 21:40:58,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:40:58,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:40:58,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:40:58,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:40:58,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:55" (1/3) ... [2019-10-13 21:40:58,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae1106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:58, skipping insertion in model container [2019-10-13 21:40:58,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:56" (2/3) ... [2019-10-13 21:40:58,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae1106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:58, skipping insertion in model container [2019-10-13 21:40:58,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:58" (3/3) ... [2019-10-13 21:40:58,868 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2019-10-13 21:40:58,879 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:40:58,887 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:40:58,899 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:40:58,930 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:40:58,930 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:40:58,932 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:40:58,932 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:40:58,932 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:40:58,932 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:40:58,932 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:40:58,933 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:40:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-13 21:40:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 21:40:58,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:58,976 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:40:58,978 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -219364041, now seen corresponding path program 1 times [2019-10-13 21:40:58,995 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:58,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141426565] [2019-10-13 21:40:58,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:58,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:58,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:59,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141426565] [2019-10-13 21:40:59,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:59,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:59,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414932107] [2019-10-13 21:40:59,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:59,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:59,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:59,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:59,447 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2019-10-13 21:41:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:00,036 INFO L93 Difference]: Finished difference Result 273 states and 508 transitions. [2019-10-13 21:41:00,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:41:00,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-10-13 21:41:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:00,067 INFO L225 Difference]: With dead ends: 273 [2019-10-13 21:41:00,067 INFO L226 Difference]: Without dead ends: 175 [2019-10-13 21:41:00,074 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:41:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-13 21:41:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-13 21:41:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-13 21:41:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 327 transitions. [2019-10-13 21:41:00,203 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 327 transitions. Word has length 86 [2019-10-13 21:41:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:00,205 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 327 transitions. [2019-10-13 21:41:00,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:41:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 327 transitions. [2019-10-13 21:41:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:41:00,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:00,219 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:00,219 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1874059378, now seen corresponding path program 1 times [2019-10-13 21:41:00,220 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:00,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993007338] [2019-10-13 21:41:00,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:00,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:00,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:00,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993007338] [2019-10-13 21:41:00,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:00,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:41:00,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652819776] [2019-10-13 21:41:00,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:41:00,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:00,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:41:00,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:41:00,388 INFO L87 Difference]: Start difference. First operand 175 states and 327 transitions. Second operand 6 states. [2019-10-13 21:41:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:01,055 INFO L93 Difference]: Finished difference Result 547 states and 1064 transitions. [2019-10-13 21:41:01,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:41:01,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-13 21:41:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:01,062 INFO L225 Difference]: With dead ends: 547 [2019-10-13 21:41:01,062 INFO L226 Difference]: Without dead ends: 377 [2019-10-13 21:41:01,065 INFO L600 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 [2019-10-13 21:41:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-10-13 21:41:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 355. [2019-10-13 21:41:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-10-13 21:41:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 641 transitions. [2019-10-13 21:41:01,102 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 641 transitions. Word has length 101 [2019-10-13 21:41:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:01,103 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 641 transitions. [2019-10-13 21:41:01,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:41:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 641 transitions. [2019-10-13 21:41:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 21:41:01,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:01,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:41:01,106 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash -852391129, now seen corresponding path program 1 times [2019-10-13 21:41:01,107 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:01,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343665357] [2019-10-13 21:41:01,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:01,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:01,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:41:01,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343665357] [2019-10-13 21:41:01,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:41:01,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:41:01,289 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020732699] [2019-10-13 21:41:01,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:41:01,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:41:01,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:41:01,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:01,296 INFO L87 Difference]: Start difference. First operand 355 states and 641 transitions. Second operand 4 states. [2019-10-13 21:41:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:41:02,066 INFO L93 Difference]: Finished difference Result 1307 states and 2498 transitions. [2019-10-13 21:41:02,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:41:02,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-10-13 21:41:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:41:02,076 INFO L225 Difference]: With dead ends: 1307 [2019-10-13 21:41:02,076 INFO L226 Difference]: Without dead ends: 957 [2019-10-13 21:41:02,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:41:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-10-13 21:41:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2019-10-13 21:41:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2019-10-13 21:41:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1604 transitions. [2019-10-13 21:41:02,148 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1604 transitions. Word has length 112 [2019-10-13 21:41:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:41:02,149 INFO L462 AbstractCegarLoop]: Abstraction has 957 states and 1604 transitions. [2019-10-13 21:41:02,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:41:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1604 transitions. [2019-10-13 21:41:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:41:02,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:41:02,155 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:41:02,155 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:41:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:41:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash -398110547, now seen corresponding path program 1 times [2019-10-13 21:41:02,156 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:41:02,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458111782] [2019-10-13 21:41:02,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:02,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:41:02,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:41:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:41:02,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458111782] [2019-10-13 21:41:02,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928390322] [2019-10-13 21:41:02,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:41:02,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:41:02,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:41:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:41:02,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:41:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:41:02,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874190667] [2019-10-13 21:41:02,738 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-13 21:41:02,739 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:41:02,746 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:41:02,756 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:41:02,757 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:41:03,029 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 89 for LOIs [2019-10-13 21:41:03,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:41:03,605 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:41:03,610 INFO L168 Benchmark]: Toolchain (without parser) took 7706.25 ms. Allocated memory was 137.9 MB in the beginning and 342.9 MB in the end (delta: 205.0 MB). Free memory was 100.3 MB in the beginning and 224.3 MB in the end (delta: -123.9 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,611 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.58 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 169.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,613 INFO L168 Benchmark]: Boogie Preprocessor took 117.71 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 163.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,614 INFO L168 Benchmark]: RCFGBuilder took 2092.95 ms. Allocated memory was 202.4 MB in the beginning and 253.8 MB in the end (delta: 51.4 MB). Free memory was 163.9 MB in the beginning and 209.4 MB in the end (delta: -45.6 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,615 INFO L168 Benchmark]: TraceAbstraction took 4746.68 ms. Allocated memory was 253.8 MB in the beginning and 342.9 MB in the end (delta: 89.1 MB). Free memory was 209.2 MB in the beginning and 224.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:41:03,620 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.58 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 169.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.71 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 163.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2092.95 ms. Allocated memory was 202.4 MB in the beginning and 253.8 MB in the end (delta: 51.4 MB). Free memory was 163.9 MB in the beginning and 209.4 MB in the end (delta: -45.6 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4746.68 ms. Allocated memory was 253.8 MB in the beginning and 342.9 MB in the end (delta: 89.1 MB). Free memory was 209.2 MB in the beginning and 224.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...