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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:40:21,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:40:21,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:40:21,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:40:21,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:40:21,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:40:21,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:40:21,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:40:21,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:40:21,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:40:21,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:40:21,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:40:21,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:40:21,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:40:21,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:40:21,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:40:21,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:40:21,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:40:21,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:40:21,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:40:21,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:40:21,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:40:21,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:40:21,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:40:21,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:40:21,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:40:21,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:40:21,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:40:21,627 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 21:40:21,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:40:21,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:40:21,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:40:21,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:40:21,642 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:40:21,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:40:21,643 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:40:21,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:40:21,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:40:21,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:40:21,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:40:21,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:40:21,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:40:21,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:40:21,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:40:21,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:40:21,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:40:21,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:40:21,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:40:21,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:40:21,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:40:21,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:40:21,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:40:21,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:40:21,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:40:21,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:40:21,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:40:21,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:40:21,647 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 21:40:21,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:40:21,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:40:21,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:40:21,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:40:21,946 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:40:21,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2019-10-13 21:40:22,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f79661ed/485b00f705dc40eab839a6d6135a6062/FLAG9ab8d46d5 [2019-10-13 21:40:22,539 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:40:22,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2019-10-13 21:40:22,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f79661ed/485b00f705dc40eab839a6d6135a6062/FLAG9ab8d46d5 [2019-10-13 21:40:22,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f79661ed/485b00f705dc40eab839a6d6135a6062 [2019-10-13 21:40:22,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:40:22,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:40:22,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:22,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:40:22,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:40:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:22" (1/1) ... [2019-10-13 21:40:22,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aa9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:22, skipping insertion in model container [2019-10-13 21:40:22,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:22" (1/1) ... [2019-10-13 21:40:22,877 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:40:22,938 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:40:23,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:23,505 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:40:23,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:40:23,677 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:40:23,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23 WrapperNode [2019-10-13 21:40:23,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:40:23,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:40:23,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:40:23,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:40:23,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (1/1) ... [2019-10-13 21:40:23,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:40:23,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:40:23,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:40:23,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:40:23,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (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 21:40:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:40:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:40:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:40:23,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:40:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:40:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:40:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:40:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:40:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:40:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:40:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:40:25,738 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:40:25,738 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:40:25,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:25 BoogieIcfgContainer [2019-10-13 21:40:25,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:40:25,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:40:25,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:40:25,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:40:25,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:22" (1/3) ... [2019-10-13 21:40:25,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d106cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:25, skipping insertion in model container [2019-10-13 21:40:25,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:23" (2/3) ... [2019-10-13 21:40:25,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d106cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:25, skipping insertion in model container [2019-10-13 21:40:25,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:25" (3/3) ... [2019-10-13 21:40:25,763 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2019-10-13 21:40:25,779 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:40:25,790 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:40:25,802 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:40:25,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:40:25,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:40:25,835 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:40:25,835 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:40:25,835 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:40:25,836 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:40:25,836 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:40:25,836 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:40:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-10-13 21:40:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 21:40:25,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:25,883 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] [2019-10-13 21:40:25,885 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash 826819172, now seen corresponding path program 1 times [2019-10-13 21:40:25,900 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:25,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421570882] [2019-10-13 21:40:25,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:25,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:25,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:26,346 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 21:40:26,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421570882] [2019-10-13 21:40:26,349 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:26,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:40:26,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526285311] [2019-10-13 21:40:26,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:40:26,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:26,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:40:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:40:26,381 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-10-13 21:40:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:26,952 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2019-10-13 21:40:26,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:40:26,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-13 21:40:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:26,978 INFO L225 Difference]: With dead ends: 246 [2019-10-13 21:40:26,979 INFO L226 Difference]: Without dead ends: 157 [2019-10-13 21:40:26,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 21:40:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-10-13 21:40:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-10-13 21:40:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-13 21:40:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 273 transitions. [2019-10-13 21:40:27,087 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 273 transitions. Word has length 77 [2019-10-13 21:40:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:27,089 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 273 transitions. [2019-10-13 21:40:27,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:40:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 273 transitions. [2019-10-13 21:40:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:40:27,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:27,096 INFO L380 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] [2019-10-13 21:40:27,097 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1195667461, now seen corresponding path program 1 times [2019-10-13 21:40:27,098 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:27,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643495316] [2019-10-13 21:40:27,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:27,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:27,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:27,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643495316] [2019-10-13 21:40:27,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:40:27,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:40:27,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681555960] [2019-10-13 21:40:27,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:40:27,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:40:27,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:40:27,194 INFO L87 Difference]: Start difference. First operand 157 states and 273 transitions. Second operand 6 states. [2019-10-13 21:40:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:27,834 INFO L93 Difference]: Finished difference Result 479 states and 861 transitions. [2019-10-13 21:40:27,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:40:27,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2019-10-13 21:40:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:27,846 INFO L225 Difference]: With dead ends: 479 [2019-10-13 21:40:27,846 INFO L226 Difference]: Without dead ends: 327 [2019-10-13 21:40:27,849 INFO L600 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 [2019-10-13 21:40:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-13 21:40:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-10-13 21:40:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-13 21:40:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 544 transitions. [2019-10-13 21:40:27,895 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 544 transitions. Word has length 87 [2019-10-13 21:40:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:27,895 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 544 transitions. [2019-10-13 21:40:27,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:40:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 544 transitions. [2019-10-13 21:40:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 21:40:27,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:27,900 INFO L380 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] [2019-10-13 21:40:27,900 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2128689065, now seen corresponding path program 1 times [2019-10-13 21:40:27,901 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:27,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217335427] [2019-10-13 21:40:27,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:27,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:27,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:28,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217335427] [2019-10-13 21:40:28,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776976031] [2019-10-13 21:40:28,082 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 21:40:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:28,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:40:28,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:40:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:28,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:40:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:28,366 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:40:28,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2019-10-13 21:40:28,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120914359] [2019-10-13 21:40:28,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:40:28,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:40:28,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:40:28,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:40:28,368 INFO L87 Difference]: Start difference. First operand 315 states and 544 transitions. Second operand 4 states. [2019-10-13 21:40:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:40:29,020 INFO L93 Difference]: Finished difference Result 1002 states and 1772 transitions. [2019-10-13 21:40:29,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:40:29,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-13 21:40:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:40:29,027 INFO L225 Difference]: With dead ends: 1002 [2019-10-13 21:40:29,027 INFO L226 Difference]: Without dead ends: 692 [2019-10-13 21:40:29,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:40:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2019-10-13 21:40:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 540. [2019-10-13 21:40:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2019-10-13 21:40:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 774 transitions. [2019-10-13 21:40:29,071 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 774 transitions. Word has length 88 [2019-10-13 21:40:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:40:29,072 INFO L462 AbstractCegarLoop]: Abstraction has 540 states and 774 transitions. [2019-10-13 21:40:29,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:40:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 774 transitions. [2019-10-13 21:40:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 21:40:29,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:40:29,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:40:29,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:29,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:40:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:40:29,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1484520614, now seen corresponding path program 1 times [2019-10-13 21:40:29,283 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:40:29,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248398562] [2019-10-13 21:40:29,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:29,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:40:29,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:40:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:29,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248398562] [2019-10-13 21:40:29,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150139015] [2019-10-13 21:40:29,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:40:29,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:40:29,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:40:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:29,626 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:40:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:40:29,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492254995] [2019-10-13 21:40:29,777 INFO L162 IcfgInterpreter]: Started Sifa with 81 locations of interest [2019-10-13 21:40:29,777 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:40:29,784 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:40:29,793 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:40:29,794 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:40:30,151 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 100 for LOIs [2019-10-13 21:40:30,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:40:30,668 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 21:40:30,675 INFO L168 Benchmark]: Toolchain (without parser) took 7813.91 ms. Allocated memory was 138.4 MB in the beginning and 340.3 MB in the end (delta: 201.9 MB). Free memory was 100.6 MB in the beginning and 298.7 MB in the end (delta: -198.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,676 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.67 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 100.3 MB in the beginning and 169.8 MB in the end (delta: -69.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,678 INFO L168 Benchmark]: Boogie Preprocessor took 131.20 ms. Allocated memory is still 204.5 MB. Free memory was 169.8 MB in the beginning and 164.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,679 INFO L168 Benchmark]: RCFGBuilder took 1933.84 ms. Allocated memory was 204.5 MB in the beginning and 250.6 MB in the end (delta: 46.1 MB). Free memory was 164.1 MB in the beginning and 215.2 MB in the end (delta: -51.1 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,680 INFO L168 Benchmark]: TraceAbstraction took 4926.25 ms. Allocated memory was 250.6 MB in the beginning and 340.3 MB in the end (delta: 89.7 MB). Free memory was 213.4 MB in the beginning and 298.7 MB in the end (delta: -85.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:40:30,684 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 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.67 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 100.3 MB in the beginning and 169.8 MB in the end (delta: -69.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.20 ms. Allocated memory is still 204.5 MB. Free memory was 169.8 MB in the beginning and 164.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1933.84 ms. Allocated memory was 204.5 MB in the beginning and 250.6 MB in the end (delta: 46.1 MB). Free memory was 164.1 MB in the beginning and 215.2 MB in the end (delta: -51.1 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4926.25 ms. Allocated memory was 250.6 MB in the beginning and 340.3 MB in the end (delta: 89.7 MB). Free memory was 213.4 MB in the beginning and 298.7 MB in the end (delta: -85.3 MB). Peak memory consumption was 4.4 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...