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/Problem16_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:54:08,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:54:08,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:54:08,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:54:08,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:54:08,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:54:08,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:54:08,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:54:08,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:54:08,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:54:08,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:54:08,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:54:08,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:54:08,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:54:08,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:54:08,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:54:08,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:54:08,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:54:08,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:54:08,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:54:08,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:54:08,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:54:08,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:54:08,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:54:08,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:54:08,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:54:08,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:54:08,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:54:08,373 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 21:54:08,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:54:08,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:54:08,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:54:08,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:54:08,405 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:54:08,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:54:08,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:54:08,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:54:08,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:54:08,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:54:08,407 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:54:08,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:54:08,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:54:08,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:54:08,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:54:08,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:54:08,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:54:08,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:54:08,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:54:08,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:54:08,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:54:08,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:54:08,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:54:08,410 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 21:54:08,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:54:08,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:54:08,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:54:08,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:54:08,707 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:54:08,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2019-10-13 21:54:08,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f76819c/75df1663aaa943c0b39b1fa4978fb202/FLAG3050d0536 [2019-10-13 21:54:09,487 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:54:09,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2019-10-13 21:54:09,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f76819c/75df1663aaa943c0b39b1fa4978fb202/FLAG3050d0536 [2019-10-13 21:54:09,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f76819c/75df1663aaa943c0b39b1fa4978fb202 [2019-10-13 21:54:09,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:54:09,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:54:09,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:09,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:54:09,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:54:09,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:09" (1/1) ... [2019-10-13 21:54:09,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78dea5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:09, skipping insertion in model container [2019-10-13 21:54:09,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:09" (1/1) ... [2019-10-13 21:54:09,679 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:54:09,758 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:54:10,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:10,562 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:54:10,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:10,925 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:54:10,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10 WrapperNode [2019-10-13 21:54:10,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:10,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:54:10,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:54:10,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:54:10,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:10,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (1/1) ... [2019-10-13 21:54:11,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:54:11,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:54:11,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:54:11,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:54:11,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (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 21:54:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:54:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:54:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:54:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:54:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:54:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:54:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:54:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:54:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:54:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:54:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:54:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:54:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:54:26,237 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:54:26,239 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:54:26,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:26 BoogieIcfgContainer [2019-10-13 21:54:26,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:54:26,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:54:26,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:54:26,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:54:26,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:09" (1/3) ... [2019-10-13 21:54:26,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb4ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:26, skipping insertion in model container [2019-10-13 21:54:26,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:10" (2/3) ... [2019-10-13 21:54:26,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65eb4ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:26, skipping insertion in model container [2019-10-13 21:54:26,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:26" (3/3) ... [2019-10-13 21:54:26,257 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label47.c [2019-10-13 21:54:26,270 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:54:26,280 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:54:26,292 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:54:26,330 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:54:26,330 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:54:26,330 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:54:26,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:54:26,332 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:54:26,332 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:54:26,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:54:26,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:54:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:54:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:54:26,378 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:26,380 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:26,381 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:26,386 INFO L82 PathProgramCache]: Analyzing trace with hash 863569471, now seen corresponding path program 1 times [2019-10-13 21:54:26,392 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:26,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205184277] [2019-10-13 21:54:26,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:26,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:26,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:26,651 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 21:54:26,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205184277] [2019-10-13 21:54:26,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:26,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:54:26,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657682769] [2019-10-13 21:54:26,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:54:26,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:26,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:54:26,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:54:26,674 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 3 states. [2019-10-13 21:54:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:28,512 INFO L93 Difference]: Finished difference Result 718 states and 1389 transitions. [2019-10-13 21:54:28,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:54:28,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-13 21:54:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:28,536 INFO L225 Difference]: With dead ends: 718 [2019-10-13 21:54:28,537 INFO L226 Difference]: Without dead ends: 471 [2019-10-13 21:54:28,549 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 21:54:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-13 21:54:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2019-10-13 21:54:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-10-13 21:54:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 873 transitions. [2019-10-13 21:54:28,661 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 873 transitions. Word has length 11 [2019-10-13 21:54:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:28,662 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 873 transitions. [2019-10-13 21:54:28,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:54:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 873 transitions. [2019-10-13 21:54:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:54:28,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:28,665 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:28,665 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash -197027157, now seen corresponding path program 1 times [2019-10-13 21:54:28,666 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:28,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009891799] [2019-10-13 21:54:28,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:28,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:28,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:28,798 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 21:54:28,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009891799] [2019-10-13 21:54:28,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:28,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:54:28,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524683434] [2019-10-13 21:54:28,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:54:28,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:28,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:54:28,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:28,802 INFO L87 Difference]: Start difference. First operand 461 states and 873 transitions. Second operand 5 states. [2019-10-13 21:54:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:30,880 INFO L93 Difference]: Finished difference Result 1387 states and 2652 transitions. [2019-10-13 21:54:30,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:54:30,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-13 21:54:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:30,889 INFO L225 Difference]: With dead ends: 1387 [2019-10-13 21:54:30,889 INFO L226 Difference]: Without dead ends: 931 [2019-10-13 21:54:30,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:54:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-10-13 21:54:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 923. [2019-10-13 21:54:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-13 21:54:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1537 transitions. [2019-10-13 21:54:30,944 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1537 transitions. Word has length 23 [2019-10-13 21:54:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:30,945 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1537 transitions. [2019-10-13 21:54:30,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:54:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1537 transitions. [2019-10-13 21:54:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 21:54:30,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:30,947 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:54:30,948 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1706167844, now seen corresponding path program 1 times [2019-10-13 21:54:30,948 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:30,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037148068] [2019-10-13 21:54:30,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:30,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:30,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:54:31,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037148068] [2019-10-13 21:54:31,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420370916] [2019-10-13 21:54:31,078 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 21:54:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:31,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:54:31,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:31,210 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 21:54:31,211 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:31,254 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 21:54:31,255 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:54:31,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-13 21:54:31,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274041812] [2019-10-13 21:54:31,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:54:31,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:31,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:54:31,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:31,257 INFO L87 Difference]: Start difference. First operand 923 states and 1537 transitions. Second operand 3 states. [2019-10-13 21:54:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:32,629 INFO L93 Difference]: Finished difference Result 1381 states and 2201 transitions. [2019-10-13 21:54:32,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:54:32,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 21:54:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:32,639 INFO L225 Difference]: With dead ends: 1381 [2019-10-13 21:54:32,640 INFO L226 Difference]: Without dead ends: 1379 [2019-10-13 21:54:32,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-13 21:54:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 933. [2019-10-13 21:54:32,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2019-10-13 21:54:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1554 transitions. [2019-10-13 21:54:32,683 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1554 transitions. Word has length 52 [2019-10-13 21:54:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:32,684 INFO L462 AbstractCegarLoop]: Abstraction has 933 states and 1554 transitions. [2019-10-13 21:54:32,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:54:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1554 transitions. [2019-10-13 21:54:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 21:54:32,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:32,687 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:54:32,894 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:32,895 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash 913820691, now seen corresponding path program 1 times [2019-10-13 21:54:32,896 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:32,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137117530] [2019-10-13 21:54:32,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:32,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:32,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:33,065 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 21:54:33,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137117530] [2019-10-13 21:54:33,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:33,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:54:33,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177262139] [2019-10-13 21:54:33,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:54:33,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:54:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:54:33,068 INFO L87 Difference]: Start difference. First operand 933 states and 1554 transitions. Second operand 6 states. [2019-10-13 21:54:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:37,805 INFO L93 Difference]: Finished difference Result 2572 states and 4312 transitions. [2019-10-13 21:54:37,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:54:37,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-13 21:54:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:37,820 INFO L225 Difference]: With dead ends: 2572 [2019-10-13 21:54:37,820 INFO L226 Difference]: Without dead ends: 1644 [2019-10-13 21:54:37,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:54:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2019-10-13 21:54:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1608. [2019-10-13 21:54:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2019-10-13 21:54:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2455 transitions. [2019-10-13 21:54:37,876 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2455 transitions. Word has length 67 [2019-10-13 21:54:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:37,877 INFO L462 AbstractCegarLoop]: Abstraction has 1608 states and 2455 transitions. [2019-10-13 21:54:37,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:54:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2455 transitions. [2019-10-13 21:54:37,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:54:37,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:37,881 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:37,882 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:37,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:37,882 INFO L82 PathProgramCache]: Analyzing trace with hash -160848853, now seen corresponding path program 1 times [2019-10-13 21:54:37,882 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:37,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391473093] [2019-10-13 21:54:37,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:37,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:37,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:38,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391473093] [2019-10-13 21:54:38,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348794172] [2019-10-13 21:54:38,037 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 21:54:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:38,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:54:38,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:38,189 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:38,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463831413] [2019-10-13 21:54:38,340 INFO L162 IcfgInterpreter]: Started Sifa with 77 locations of interest [2019-10-13 21:54:38,341 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:54:38,347 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:54:38,355 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:54:38,356 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:54:38,537 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-13 21:54:38,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-13 21:54:39,024 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 59 [2019-10-13 21:54:39,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:39,743 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 21:54:39,750 INFO L168 Benchmark]: Toolchain (without parser) took 30085.37 ms. Allocated memory was 139.5 MB in the beginning and 509.1 MB in the end (delta: 369.6 MB). Free memory was 99.3 MB in the beginning and 359.5 MB in the end (delta: -260.1 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,751 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1261.25 ms. Allocated memory was 139.5 MB in the beginning and 208.7 MB in the end (delta: 69.2 MB). Free memory was 99.1 MB in the beginning and 136.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,753 INFO L168 Benchmark]: Boogie Preprocessor took 231.00 ms. Allocated memory is still 208.7 MB. Free memory was 136.6 MB in the beginning and 126.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,754 INFO L168 Benchmark]: RCFGBuilder took 15082.26 ms. Allocated memory was 208.7 MB in the beginning and 336.6 MB in the end (delta: 127.9 MB). Free memory was 126.5 MB in the beginning and 274.2 MB in the end (delta: -147.7 MB). Peak memory consumption was 148.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,759 INFO L168 Benchmark]: TraceAbstraction took 13503.20 ms. Allocated memory was 336.6 MB in the beginning and 509.1 MB in the end (delta: 172.5 MB). Free memory was 274.1 MB in the beginning and 359.5 MB in the end (delta: -85.3 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:39,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1261.25 ms. Allocated memory was 139.5 MB in the beginning and 208.7 MB in the end (delta: 69.2 MB). Free memory was 99.1 MB in the beginning and 136.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.00 ms. Allocated memory is still 208.7 MB. Free memory was 136.6 MB in the beginning and 126.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15082.26 ms. Allocated memory was 208.7 MB in the beginning and 336.6 MB in the end (delta: 127.9 MB). Free memory was 126.5 MB in the beginning and 274.2 MB in the end (delta: -147.7 MB). Peak memory consumption was 148.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13503.20 ms. Allocated memory was 336.6 MB in the beginning and 509.1 MB in the end (delta: 172.5 MB). Free memory was 274.1 MB in the beginning and 359.5 MB in the end (delta: -85.3 MB). Peak memory consumption was 87.2 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...