java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:52:10,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:52:10,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:52:10,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:52:10,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:52:10,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:52:10,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:52:10,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:52:10,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:52:10,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:52:10,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:52:10,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:52:10,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:52:10,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:52:10,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:52:10,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:52:10,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:52:10,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:52:10,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:52:10,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:52:10,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:52:10,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:52:10,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:52:10,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:52:10,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:52:10,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:52:10,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:52:10,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:52:10,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:52:10,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:52:10,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:52:10,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:52:10,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:52:10,832 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:52:10,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:52:10,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:52:10,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:52:10,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:52:10,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:52:10,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:52:10,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:52:10,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:52:10,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:52:10,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:52:10,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:52:10,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:52:10,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:52:10,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:52:10,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:52:10,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:52:10,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:10,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:52:10,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:52:10,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:52:10,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:52:10,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:52:10,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:52:10,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:52:11,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:52:11,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:52:11,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:52:11,171 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:52:11,172 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:52:11,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2019-10-13 21:52:11,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a29d68d1/035223c693864f47b41bcc47d49ae11b/FLAG011ce7719 [2019-10-13 21:52:11,964 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:52:11,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2019-10-13 21:52:11,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a29d68d1/035223c693864f47b41bcc47d49ae11b/FLAG011ce7719 [2019-10-13 21:52:12,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a29d68d1/035223c693864f47b41bcc47d49ae11b [2019-10-13 21:52:12,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:52:12,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:52:12,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:12,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:52:12,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:52:12,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:12" (1/1) ... [2019-10-13 21:52:12,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b840ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:12, skipping insertion in model container [2019-10-13 21:52:12,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:52:12" (1/1) ... [2019-10-13 21:52:12,173 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:52:12,247 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:52:13,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:13,168 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:52:13,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:52:13,551 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:52:13,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13 WrapperNode [2019-10-13 21:52:13,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:52:13,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:52:13,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:52:13,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:52:13,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... [2019-10-13 21:52:13,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:52:13,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:52:13,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:52:13,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:52:13,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:52:13,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:52:13,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:52:13,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:52:13,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:52:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:52:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:52:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:52:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:52:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:52:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:52:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:52:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:52:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:52:27,792 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:52:27,792 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:52:27,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:27 BoogieIcfgContainer [2019-10-13 21:52:27,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:52:27,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:52:27,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:52:27,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:52:27,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:52:12" (1/3) ... [2019-10-13 21:52:27,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d63aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:27, skipping insertion in model container [2019-10-13 21:52:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:52:13" (2/3) ... [2019-10-13 21:52:27,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d63aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:52:27, skipping insertion in model container [2019-10-13 21:52:27,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:52:27" (3/3) ... [2019-10-13 21:52:27,802 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2019-10-13 21:52:27,812 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:52:27,821 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:52:27,833 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:52:27,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:52:27,861 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:52:27,861 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:52:27,861 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:52:27,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:52:27,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:52:27,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:52:27,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:52:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:52:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:52:27,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:27,891 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:27,893 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash 648055405, now seen corresponding path program 1 times [2019-10-13 21:52:27,907 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:27,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571385797] [2019-10-13 21:52:27,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:27,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:27,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:28,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571385797] [2019-10-13 21:52:28,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:28,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:28,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141183173] [2019-10-13 21:52:28,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:28,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:28,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:28,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:28,174 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2019-10-13 21:52:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:33,317 INFO L93 Difference]: Finished difference Result 953 states and 1852 transitions. [2019-10-13 21:52:33,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:33,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-13 21:52:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:33,353 INFO L225 Difference]: With dead ends: 953 [2019-10-13 21:52:33,353 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:52:33,369 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:52:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 691. [2019-10-13 21:52:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2019-10-13 21:52:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1133 transitions. [2019-10-13 21:52:33,486 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1133 transitions. Word has length 11 [2019-10-13 21:52:33,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:33,486 INFO L462 AbstractCegarLoop]: Abstraction has 691 states and 1133 transitions. [2019-10-13 21:52:33,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1133 transitions. [2019-10-13 21:52:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 21:52:33,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:33,490 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:33,490 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:33,491 INFO L82 PathProgramCache]: Analyzing trace with hash 975475452, now seen corresponding path program 1 times [2019-10-13 21:52:33,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:33,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553288102] [2019-10-13 21:52:33,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:33,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:33,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:52:33,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553288102] [2019-10-13 21:52:33,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:52:33,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:52:33,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957206325] [2019-10-13 21:52:33,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:52:33,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:52:33,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:52:33,679 INFO L87 Difference]: Start difference. First operand 691 states and 1133 transitions. Second operand 4 states. [2019-10-13 21:52:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:39,466 INFO L93 Difference]: Finished difference Result 2743 states and 4570 transitions. [2019-10-13 21:52:39,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:52:39,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-10-13 21:52:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:39,480 INFO L225 Difference]: With dead ends: 2743 [2019-10-13 21:52:39,481 INFO L226 Difference]: Without dead ends: 2057 [2019-10-13 21:52:39,484 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 21:52:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2019-10-13 21:52:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2050. [2019-10-13 21:52:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2019-10-13 21:52:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2991 transitions. [2019-10-13 21:52:39,553 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2991 transitions. Word has length 21 [2019-10-13 21:52:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:39,554 INFO L462 AbstractCegarLoop]: Abstraction has 2050 states and 2991 transitions. [2019-10-13 21:52:39,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:52:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2991 transitions. [2019-10-13 21:52:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 21:52:39,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:39,558 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:39,558 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:39,558 INFO L82 PathProgramCache]: Analyzing trace with hash 245259110, now seen corresponding path program 1 times [2019-10-13 21:52:39,559 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:39,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937012428] [2019-10-13 21:52:39,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:39,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:39,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:52:39,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937012428] [2019-10-13 21:52:39,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204170913] [2019-10-13 21:52:39,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:39,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:52:39,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:52:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:52:39,937 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:52:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:52:40,047 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:52:40,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2019-10-13 21:52:40,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171737166] [2019-10-13 21:52:40,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:52:40,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:52:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:52:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:52:40,049 INFO L87 Difference]: Start difference. First operand 2050 states and 2991 transitions. Second operand 5 states. [2019-10-13 21:52:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:52:44,740 INFO L93 Difference]: Finished difference Result 5484 states and 8290 transitions. [2019-10-13 21:52:44,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:52:44,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-13 21:52:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:52:44,767 INFO L225 Difference]: With dead ends: 5484 [2019-10-13 21:52:44,768 INFO L226 Difference]: Without dead ends: 3439 [2019-10-13 21:52:44,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:52:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2019-10-13 21:52:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2779. [2019-10-13 21:52:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2019-10-13 21:52:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3901 transitions. [2019-10-13 21:52:44,933 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3901 transitions. Word has length 71 [2019-10-13 21:52:44,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:52:44,933 INFO L462 AbstractCegarLoop]: Abstraction has 2779 states and 3901 transitions. [2019-10-13 21:52:44,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:52:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3901 transitions. [2019-10-13 21:52:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:52:44,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:52:44,943 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:52:45,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:45,153 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:52:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:52:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1444759826, now seen corresponding path program 1 times [2019-10-13 21:52:45,154 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:52:45,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777751663] [2019-10-13 21:52:45,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:52:45,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:52:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:45,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777751663] [2019-10-13 21:52:45,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307438634] [2019-10-13 21:52:45,428 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 21:52:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:52:45,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:52:45,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:52:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:45,619 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:52:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:52:45,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654930406] [2019-10-13 21:52:45,773 INFO L162 IcfgInterpreter]: Started Sifa with 148 locations of interest [2019-10-13 21:52:45,773 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:52:45,781 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:52:45,791 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:52:45,792 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:52:45,980 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2019-10-13 21:52:46,278 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2019-10-13 21:52:46,635 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6859 conjuctions. This might take some time... [2019-10-13 21:52:46,721 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2019-10-13 21:52:47,042 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6859 conjuctions. This might take some time... [2019-10-13 21:52:47,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:52:47,540 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:52:47,547 INFO L168 Benchmark]: Toolchain (without parser) took 35388.14 ms. Allocated memory was 137.9 MB in the beginning and 534.2 MB in the end (delta: 396.4 MB). Free memory was 97.5 MB in the beginning and 252.6 MB in the end (delta: -155.1 MB). Peak memory consumption was 241.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,556 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1393.42 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 97.3 MB in the beginning and 105.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,559 INFO L168 Benchmark]: Boogie Preprocessor took 246.74 ms. Allocated memory is still 203.4 MB. Free memory was 105.1 MB in the beginning and 92.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,560 INFO L168 Benchmark]: RCFGBuilder took 13993.76 ms. Allocated memory was 203.4 MB in the beginning and 309.9 MB in the end (delta: 106.4 MB). Free memory was 92.7 MB in the beginning and 247.2 MB in the end (delta: -154.5 MB). Peak memory consumption was 127.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,563 INFO L168 Benchmark]: TraceAbstraction took 19749.29 ms. Allocated memory was 309.9 MB in the beginning and 534.2 MB in the end (delta: 224.4 MB). Free memory was 247.2 MB in the beginning and 252.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 219.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:52:47,571 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.2 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1393.42 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 97.3 MB in the beginning and 105.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.74 ms. Allocated memory is still 203.4 MB. Free memory was 105.1 MB in the beginning and 92.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13993.76 ms. Allocated memory was 203.4 MB in the beginning and 309.9 MB in the end (delta: 106.4 MB). Free memory was 92.7 MB in the beginning and 247.2 MB in the end (delta: -154.5 MB). Peak memory consumption was 127.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19749.29 ms. Allocated memory was 309.9 MB in the beginning and 534.2 MB in the end (delta: 224.4 MB). Free memory was 247.2 MB in the beginning and 252.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 219.0 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...