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/array-examples/standard_strcmp_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:24:20,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:24:20,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:24:20,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 00:24:20,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:24:20,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:24:20,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:24:20,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:24:20,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:24:20,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:24:20,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:24:20,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:24:20,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:24:20,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:24:20,771 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:24:20,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:24:20,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:24:20,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:24:20,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:24:20,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:24:20,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:24:20,772 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:24:20,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:24:20,773 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:24:20,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:24:20,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:24:20,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:24:20,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:24:20,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:24:20,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:24:20,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:24:20,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:24:20,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:24:20,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:24:20,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:24:20,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:24:20,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:24:21,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:24:21,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:24:21,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:24:21,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:24:21,075 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:24:21,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcmp_ground.i [2019-10-07 00:24:21,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5ea19be/b1f310b747854188a5d74dfe9576bc78/FLAG483ff15d6 [2019-10-07 00:24:21,632 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:24:21,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_strcmp_ground.i [2019-10-07 00:24:21,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5ea19be/b1f310b747854188a5d74dfe9576bc78/FLAG483ff15d6 [2019-10-07 00:24:22,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5ea19be/b1f310b747854188a5d74dfe9576bc78 [2019-10-07 00:24:22,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:24:22,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:24:22,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:24:22,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:24:22,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:24:22,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9690e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22, skipping insertion in model container [2019-10-07 00:24:22,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,043 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:24:22,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:24:22,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:24:22,328 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:24:22,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:24:22,486 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:24:22,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22 WrapperNode [2019-10-07 00:24:22,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:24:22,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:24:22,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:24:22,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:24:22,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... [2019-10-07 00:24:22,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:24:22,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:24:22,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:24:22,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:24:22,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:24:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:24:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:24:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:24:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _strcmp [2019-10-07 00:24:22,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:24:22,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure _strcmp [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:24:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:24:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:24:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:24:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:24:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:24:23,014 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:24:23,015 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 00:24:23,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:24:23 BoogieIcfgContainer [2019-10-07 00:24:23,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:24:23,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:24:23,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:24:23,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:24:23,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:24:22" (1/3) ... [2019-10-07 00:24:23,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53559563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:24:23, skipping insertion in model container [2019-10-07 00:24:23,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:24:22" (2/3) ... [2019-10-07 00:24:23,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53559563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:24:23, skipping insertion in model container [2019-10-07 00:24:23,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:24:23" (3/3) ... [2019-10-07 00:24:23,025 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_strcmp_ground.i [2019-10-07 00:24:23,034 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:24:23,042 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:24:23,053 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:24:23,079 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:24:23,080 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:24:23,080 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:24:23,080 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:24:23,080 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:24:23,080 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:24:23,080 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:24:23,080 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:24:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-07 00:24:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 00:24:23,102 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:24:23,103 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:24:23,105 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:24:23,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:24:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2088925591, now seen corresponding path program 1 times [2019-10-07 00:24:23,119 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:24:23,119 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,119 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,119 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:24:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:24:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:24:23,328 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,329 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:24:23,329 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:24:23,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:24:23,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:24:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:24:23,358 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-10-07 00:24:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:24:23,426 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-10-07 00:24:23,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:24:23,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-07 00:24:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:24:23,439 INFO L225 Difference]: With dead ends: 49 [2019-10-07 00:24:23,439 INFO L226 Difference]: Without dead ends: 24 [2019-10-07 00:24:23,446 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:24:23,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-07 00:24:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-07 00:24:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-07 00:24:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-07 00:24:23,506 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2019-10-07 00:24:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:24:23,508 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-07 00:24:23,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:24:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-07 00:24:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-07 00:24:23,511 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:24:23,511 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:24:23,512 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:24:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:24:23,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1937280848, now seen corresponding path program 1 times [2019-10-07 00:24:23,514 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:24:23,514 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,515 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,515 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:24:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:24:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:24:23,626 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,627 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:24:23,627 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:24:23,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:24:23,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:24:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:24:23,631 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2019-10-07 00:24:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:24:23,663 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-10-07 00:24:23,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:24:23,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-07 00:24:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:24:23,668 INFO L225 Difference]: With dead ends: 41 [2019-10-07 00:24:23,668 INFO L226 Difference]: Without dead ends: 28 [2019-10-07 00:24:23,669 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:24:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-07 00:24:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-10-07 00:24:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-07 00:24:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-07 00:24:23,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2019-10-07 00:24:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:24:23,678 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-07 00:24:23,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:24:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-07 00:24:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-07 00:24:23,679 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:24:23,679 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:24:23,679 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:24:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:24:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 488260604, now seen corresponding path program 1 times [2019-10-07 00:24:23,680 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:24:23,680 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,681 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:24:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:24:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:24:23,774 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,775 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:24:23,775 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 00:24:23,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 00:24:23,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 00:24:23,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 00:24:23,777 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2019-10-07 00:24:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:24:23,798 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-10-07 00:24:23,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 00:24:23,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-07 00:24:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:24:23,799 INFO L225 Difference]: With dead ends: 38 [2019-10-07 00:24:23,800 INFO L226 Difference]: Without dead ends: 25 [2019-10-07 00:24:23,800 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 00:24:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-07 00:24:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-07 00:24:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-07 00:24:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-07 00:24:23,807 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2019-10-07 00:24:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:24:23,807 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-07 00:24:23,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 00:24:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-07 00:24:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-07 00:24:23,809 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:24:23,809 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:24:23,810 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:24:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:24:23,810 INFO L82 PathProgramCache]: Analyzing trace with hash 734425716, now seen corresponding path program 1 times [2019-10-07 00:24:23,810 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:24:23,811 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,811 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,811 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:24:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:24:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:24:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:24:23,898 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:24:23,898 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:24:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:24:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:24:23,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 00:24:23,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:24:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:24:24,008 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:24:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:24:24,069 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:24:24,131 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-07 00:24:24,131 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:24:24,141 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:24:24,150 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:24:24,151 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:24:24,334 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-07 00:24:24,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:24:24,848 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: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε 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.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:24:24,855 INFO L168 Benchmark]: Toolchain (without parser) took 2829.74 ms. Allocated memory was 137.9 MB in the beginning and 234.9 MB in the end (delta: 97.0 MB). Free memory was 101.5 MB in the beginning and 188.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,856 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.35 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 181.6 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,858 INFO L168 Benchmark]: Boogie Preprocessor took 61.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,859 INFO L168 Benchmark]: RCFGBuilder took 466.24 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 160.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,860 INFO L168 Benchmark]: TraceAbstraction took 1835.65 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 160.4 MB in the beginning and 188.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:24:24,864 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.35 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 181.6 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.24 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 160.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1835.65 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 160.4 MB in the beginning and 188.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...