/usr/bin/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/ldv-regression/test27-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:50:29,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:50:29,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:50:29,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:50:29,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:50:29,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:50:29,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:50:29,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:50:29,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:50:29,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:50:29,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:50:29,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:50:29,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:50:29,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:50:29,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:50:29,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:50:29,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:50:29,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:50:29,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:50:29,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:50:29,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:50:29,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:50:29,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:50:29,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:50:29,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:50:29,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:50:29,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:50:29,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:50:29,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:50:29,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:50:29,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:50:29,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:50:29,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:50:29,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:50:29,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:50:29,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:50:29,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:50:29,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:50:29,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:50:29,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:50:29,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:50:29,645 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 [2019-11-07 03:50:29,664 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:50:29,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:50:29,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:50:29,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:50:29,667 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:50:29,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:50:29,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:50:29,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:50:29,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:50:29,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:50:29,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:50:29,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:50:29,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:50:29,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:50:29,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:50:29,670 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:50:29,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:50:29,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:50:29,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:50:29,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:50:29,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:50:29,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:50:29,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:50:29,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:50:29,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:50:29,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:50:29,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:50:29,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:50:29,673 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 [2019-11-07 03:50:30,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:50:30,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:50:30,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:50:30,035 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:50:30,035 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:50:30,036 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test27-1.c [2019-11-07 03:50:30,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2f3ed38/335449a2cd3d427fbe7ae54c90e2cf37/FLAG3ed95530e [2019-11-07 03:50:30,603 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:50:30,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-1.c [2019-11-07 03:50:30,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2f3ed38/335449a2cd3d427fbe7ae54c90e2cf37/FLAG3ed95530e [2019-11-07 03:50:31,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2f3ed38/335449a2cd3d427fbe7ae54c90e2cf37 [2019-11-07 03:50:31,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:50:31,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:50:31,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:31,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:50:31,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:50:31,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d840d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31, skipping insertion in model container [2019-11-07 03:50:31,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,053 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:50:31,088 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:50:31,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:31,417 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:50:31,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:31,543 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:50:31,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31 WrapperNode [2019-11-07 03:50:31,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:31,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:50:31,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:50:31,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:50:31,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (1/1) ... [2019-11-07 03:50:31,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:50:31,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:50:31,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:50:31,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:50:31,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (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 [2019-11-07 03:50:31,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:50:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:50:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-11-07 03:50:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:50:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:50:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:50:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:50:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-07 03:50:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:50:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:50:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:50:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:50:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:50:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:50:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:50:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:50:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:50:32,137 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:50:32,137 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 03:50:32,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:32 BoogieIcfgContainer [2019-11-07 03:50:32,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:50:32,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:50:32,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:50:32,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:50:32,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:31" (1/3) ... [2019-11-07 03:50:32,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442851d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:32, skipping insertion in model container [2019-11-07 03:50:32,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:31" (2/3) ... [2019-11-07 03:50:32,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442851d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:32, skipping insertion in model container [2019-11-07 03:50:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:32" (3/3) ... [2019-11-07 03:50:32,147 INFO L109 eAbstractionObserver]: Analyzing ICFG test27-1.c [2019-11-07 03:50:32,154 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:50:32,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:50:32,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:50:32,190 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:50:32,190 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:50:32,190 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:50:32,190 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:50:32,191 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:50:32,191 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:50:32,191 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:50:32,191 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:50:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-07 03:50:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 03:50:32,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:32,212 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:32,214 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1941687829, now seen corresponding path program 1 times [2019-11-07 03:50:32,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:32,229 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11394782] [2019-11-07 03:50:32,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:32,432 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11394782] [2019-11-07 03:50:32,433 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:32,433 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 03:50:32,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988040280] [2019-11-07 03:50:32,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 03:50:32,441 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:32,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 03:50:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 03:50:32,462 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-07 03:50:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:32,493 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-07 03:50:32,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 03:50:32,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-07 03:50:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:32,510 INFO L225 Difference]: With dead ends: 34 [2019-11-07 03:50:32,511 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 03:50:32,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 03:50:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 03:50:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 03:50:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 03:50:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-07 03:50:32,577 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2019-11-07 03:50:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:32,578 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-07 03:50:32,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 03:50:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-07 03:50:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 03:50:32,581 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:32,582 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:32,582 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:32,583 INFO L82 PathProgramCache]: Analyzing trace with hash -399303129, now seen corresponding path program 1 times [2019-11-07 03:50:32,583 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:32,584 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666230236] [2019-11-07 03:50:32,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:32,738 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666230236] [2019-11-07 03:50:32,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:32,739 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:50:32,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214830093] [2019-11-07 03:50:32,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:50:32,746 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:32,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:50:32,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:50:32,747 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2019-11-07 03:50:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:32,768 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-07 03:50:32,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:50:32,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-07 03:50:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:32,774 INFO L225 Difference]: With dead ends: 29 [2019-11-07 03:50:32,775 INFO L226 Difference]: Without dead ends: 18 [2019-11-07 03:50:32,776 INFO L630 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 [2019-11-07 03:50:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-07 03:50:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-07 03:50:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-07 03:50:32,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-07 03:50:32,786 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2019-11-07 03:50:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:32,786 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-07 03:50:32,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:50:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-07 03:50:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 03:50:32,787 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:32,787 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:32,788 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:32,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:32,788 INFO L82 PathProgramCache]: Analyzing trace with hash -194170152, now seen corresponding path program 1 times [2019-11-07 03:50:32,789 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:32,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219519080] [2019-11-07 03:50:32,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:32,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219519080] [2019-11-07 03:50:32,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455254557] [2019-11-07 03:50:32,895 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 [2019-11-07 03:50:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:32,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 03:50:32,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:50:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:33,020 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:50:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:33,061 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353705607] [2019-11-07 03:50:33,100 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-11-07 03:50:33,100 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:50:33,106 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:50:33,112 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:50:33,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:50:33,262 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:50:34,434 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-07 03:50:34,641 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-07 03:50:34,667 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 03:50:34,820 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 03:50:35,094 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-11-07 03:50:35,174 INFO L197 IcfgInterpreter]: Interpreting procedure check with input of size 35 for LOIs [2019-11-07 03:50:35,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:50:35,180 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:50:35,719 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:50:35,719 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 14] total 20 [2019-11-07 03:50:35,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808661813] [2019-11-07 03:50:35,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 03:50:35,722 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:35,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 03:50:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2019-11-07 03:50:35,725 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 20 states. [2019-11-07 03:50:36,527 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-11-07 03:50:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:36,773 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-11-07 03:50:36,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 03:50:36,773 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2019-11-07 03:50:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:36,774 INFO L225 Difference]: With dead ends: 41 [2019-11-07 03:50:36,774 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 03:50:36,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 03:50:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 03:50:36,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2019-11-07 03:50:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 03:50:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-07 03:50:36,782 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2019-11-07 03:50:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:36,782 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-07 03:50:36,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 03:50:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-07 03:50:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-07 03:50:36,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:36,784 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:36,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:50:36,987 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash 812335719, now seen corresponding path program 2 times [2019-11-07 03:50:36,998 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:36,999 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851096942] [2019-11-07 03:50:36,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:37,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851096942] [2019-11-07 03:50:37,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307856283] [2019-11-07 03:50:37,260 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-11-07 03:50:37,324 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 03:50:37,324 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 03:50:37,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-07 03:50:37,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:50:37,517 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-11-07 03:50:37,716 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-11-07 03:50:37,852 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-07 03:50:38,039 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-11-07 03:50:38,585 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 32 [2019-11-07 03:50:38,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:50:38,909 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) ... 21 more [2019-11-07 03:50:38,915 INFO L168 Benchmark]: Toolchain (without parser) took 7892.41 ms. Allocated memory was 142.6 MB in the beginning and 269.0 MB in the end (delta: 126.4 MB). Free memory was 107.3 MB in the beginning and 131.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 102.3 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,916 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.48 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 106.9 MB in the beginning and 181.4 MB in the end (delta: -74.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,917 INFO L168 Benchmark]: Boogie Preprocessor took 44.78 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,917 INFO L168 Benchmark]: RCFGBuilder took 545.31 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 157.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,918 INFO L168 Benchmark]: TraceAbstraction took 6774.11 ms. Allocated memory was 203.4 MB in the beginning and 269.0 MB in the end (delta: 65.5 MB). Free memory was 156.6 MB in the beginning and 131.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:38,921 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 142.6 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 522.48 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 106.9 MB in the beginning and 181.4 MB in the end (delta: -74.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.78 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 545.31 ms. Allocated memory is still 203.4 MB. Free memory was 179.0 MB in the beginning and 157.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6774.11 ms. Allocated memory was 203.4 MB in the beginning and 269.0 MB in the end (delta: 65.5 MB). Free memory was 156.6 MB in the beginning and 131.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...