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/Problem03_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:58:34,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:58:34,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:58:34,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:58:34,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:58:34,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:58:34,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:58:34,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:58:34,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:58:34,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:58:34,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:58:34,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:58:34,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:58:34,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:58:34,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:58:34,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:58:34,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:58:34,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:58:34,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:58:34,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:58:34,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:58:34,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:58:34,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:58:34,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:58:34,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 00:58:34,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 00:58:34,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 00:58:34,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 00:58:34,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 00:58:34,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 00:58:34,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 00:58:34,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 00:58:34,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 00:58:34,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 00:58:34,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 00:58:34,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 00:58:34,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 00:58:34,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 00:58:34,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:58:34,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:58:34,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:58:34,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 00:58:34,375 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:58:34,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:58:34,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:58:34,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:58:34,380 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:58:34,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:58:34,381 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:58:34,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:58:34,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:58:34,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:58:34,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:58:34,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:58:34,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:58:34,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:58:34,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:58:34,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:58:34,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:58:34,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:58:34,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:58:34,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:58:34,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:58:34,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:34,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:58:34,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:58:34,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:58:34,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:58:34,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:58:34,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:58:34,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 00:58:34,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:58:34,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:58:34,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:58:34,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:58:34,686 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:58:34,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2019-10-07 00:58:34,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96abccd2f/7915c8cbd2e74e5f830ac8e223af8ae8/FLAGcc6c9f4eb [2019-10-07 00:58:35,406 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:58:35,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2019-10-07 00:58:35,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96abccd2f/7915c8cbd2e74e5f830ac8e223af8ae8/FLAGcc6c9f4eb [2019-10-07 00:58:35,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96abccd2f/7915c8cbd2e74e5f830ac8e223af8ae8 [2019-10-07 00:58:35,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:58:35,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:58:35,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:35,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:58:35,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:58:35,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:35" (1/1) ... [2019-10-07 00:58:35,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663c421b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:35, skipping insertion in model container [2019-10-07 00:58:35,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:58:35" (1/1) ... [2019-10-07 00:58:35,642 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:58:35,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:58:36,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:36,493 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:58:36,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:58:36,803 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:58:36,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36 WrapperNode [2019-10-07 00:58:36,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:58:36,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:58:36,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:58:36,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:58:36,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:36,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... [2019-10-07 00:58:37,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:58:37,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:58:37,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:58:37,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:58:37,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:58:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:58:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:58:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 00:58:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:58:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 00:58:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:58:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:58:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 00:58:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:58:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:58:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:58:40,022 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:58:40,023 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 00:58:40,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:40 BoogieIcfgContainer [2019-10-07 00:58:40,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:58:40,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:58:40,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:58:40,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:58:40,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:58:35" (1/3) ... [2019-10-07 00:58:40,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520bba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:40, skipping insertion in model container [2019-10-07 00:58:40,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:58:36" (2/3) ... [2019-10-07 00:58:40,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520bba94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:58:40, skipping insertion in model container [2019-10-07 00:58:40,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:58:40" (3/3) ... [2019-10-07 00:58:40,034 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label10.c [2019-10-07 00:58:40,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:58:40,056 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:58:40,070 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:58:40,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:58:40,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:58:40,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:58:40,145 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:58:40,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:58:40,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:58:40,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:58:40,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:58:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-07 00:58:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-07 00:58:40,183 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:40,184 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:40,186 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash 136473382, now seen corresponding path program 1 times [2019-10-07 00:58:40,201 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:40,201 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:40,202 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:40,202 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:40,917 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:40,917 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:40,917 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:40,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:40,939 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2019-10-07 00:58:42,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:42,050 INFO L93 Difference]: Finished difference Result 462 states and 886 transitions. [2019-10-07 00:58:42,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:42,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-07 00:58:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:42,073 INFO L225 Difference]: With dead ends: 462 [2019-10-07 00:58:42,073 INFO L226 Difference]: Without dead ends: 301 [2019-10-07 00:58:42,078 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-07 00:58:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2019-10-07 00:58:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-07 00:58:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 564 transitions. [2019-10-07 00:58:42,154 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 564 transitions. Word has length 149 [2019-10-07 00:58:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:42,155 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 564 transitions. [2019-10-07 00:58:42,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 564 transitions. [2019-10-07 00:58:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-07 00:58:42,161 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:42,161 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:42,162 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:42,162 INFO L82 PathProgramCache]: Analyzing trace with hash 558843325, now seen corresponding path program 1 times [2019-10-07 00:58:42,163 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:42,163 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:42,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:42,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:42,325 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:42,325 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:42,325 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:58:42,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:58:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:58:42,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:58:42,328 INFO L87 Difference]: Start difference. First operand 301 states and 564 transitions. Second operand 6 states. [2019-10-07 00:58:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:43,658 INFO L93 Difference]: Finished difference Result 929 states and 1794 transitions. [2019-10-07 00:58:43,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 00:58:43,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-07 00:58:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:43,668 INFO L225 Difference]: With dead ends: 929 [2019-10-07 00:58:43,668 INFO L226 Difference]: Without dead ends: 633 [2019-10-07 00:58:43,674 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 00:58:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-07 00:58:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 603. [2019-10-07 00:58:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-07 00:58:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1113 transitions. [2019-10-07 00:58:43,775 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1113 transitions. Word has length 158 [2019-10-07 00:58:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:43,776 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1113 transitions. [2019-10-07 00:58:43,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:58:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1113 transitions. [2019-10-07 00:58:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 00:58:43,784 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:43,784 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:43,784 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:43,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1532428526, now seen corresponding path program 1 times [2019-10-07 00:58:43,785 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:43,788 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:43,788 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:43,789 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:44,140 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:44,141 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:58:44,142 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:58:44,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:58:44,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:58:44,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:44,145 INFO L87 Difference]: Start difference. First operand 603 states and 1113 transitions. Second operand 3 states. [2019-10-07 00:58:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:45,156 INFO L93 Difference]: Finished difference Result 1793 states and 3387 transitions. [2019-10-07 00:58:45,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:58:45,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-07 00:58:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:45,168 INFO L225 Difference]: With dead ends: 1793 [2019-10-07 00:58:45,168 INFO L226 Difference]: Without dead ends: 1195 [2019-10-07 00:58:45,171 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:58:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2019-10-07 00:58:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2019-10-07 00:58:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2019-10-07 00:58:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2172 transitions. [2019-10-07 00:58:45,221 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2172 transitions. Word has length 161 [2019-10-07 00:58:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:45,222 INFO L462 AbstractCegarLoop]: Abstraction has 1195 states and 2172 transitions. [2019-10-07 00:58:45,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:58:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2172 transitions. [2019-10-07 00:58:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-07 00:58:45,232 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:45,232 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:45,233 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1729521215, now seen corresponding path program 1 times [2019-10-07 00:58:45,234 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:45,234 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:45,234 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:45,235 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:45,411 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:45,412 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:45,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 00:58:45,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 00:58:45,749 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:58:45,924 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 00:58:45,924 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-07 00:58:45,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 00:58:45,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 00:58:45,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 00:58:45,926 INFO L87 Difference]: Start difference. First operand 1195 states and 2172 transitions. Second operand 5 states. [2019-10-07 00:58:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:47,271 INFO L93 Difference]: Finished difference Result 3669 states and 7031 transitions. [2019-10-07 00:58:47,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 00:58:47,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2019-10-07 00:58:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:47,302 INFO L225 Difference]: With dead ends: 3669 [2019-10-07 00:58:47,302 INFO L226 Difference]: Without dead ends: 2479 [2019-10-07 00:58:47,309 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-07 00:58:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2019-10-07 00:58:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2441. [2019-10-07 00:58:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2019-10-07 00:58:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 4497 transitions. [2019-10-07 00:58:47,442 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 4497 transitions. Word has length 178 [2019-10-07 00:58:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:47,443 INFO L462 AbstractCegarLoop]: Abstraction has 2441 states and 4497 transitions. [2019-10-07 00:58:47,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 00:58:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 4497 transitions. [2019-10-07 00:58:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-07 00:58:47,458 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:47,458 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:47,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:47,663 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1305476158, now seen corresponding path program 1 times [2019-10-07 00:58:47,664 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:47,664 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:47,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:47,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:58:47,844 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:47,844 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:47,844 INFO L95 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 [2019-10-07 00:58:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:48,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 00:58:48,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 00:58:48,217 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 00:58:48,356 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 00:58:48,356 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-07 00:58:48,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 00:58:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 00:58:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-07 00:58:48,359 INFO L87 Difference]: Start difference. First operand 2441 states and 4497 transitions. Second operand 5 states. [2019-10-07 00:58:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:58:49,667 INFO L93 Difference]: Finished difference Result 7465 states and 15186 transitions. [2019-10-07 00:58:49,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 00:58:49,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-07 00:58:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:58:49,714 INFO L225 Difference]: With dead ends: 7465 [2019-10-07 00:58:49,714 INFO L226 Difference]: Without dead ends: 5029 [2019-10-07 00:58:49,723 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-07 00:58:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2019-10-07 00:58:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4943. [2019-10-07 00:58:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2019-10-07 00:58:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 8925 transitions. [2019-10-07 00:58:49,936 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 8925 transitions. Word has length 179 [2019-10-07 00:58:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:58:49,936 INFO L462 AbstractCegarLoop]: Abstraction has 4943 states and 8925 transitions. [2019-10-07 00:58:49,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 00:58:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 8925 transitions. [2019-10-07 00:58:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-07 00:58:49,955 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:58:49,955 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:58:50,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:50,161 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:58:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:58:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2106578894, now seen corresponding path program 1 times [2019-10-07 00:58:50,163 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:58:50,163 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:50,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:50,164 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:58:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:58:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:50,310 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:58:50,310 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:58:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:58:50,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-07 00:58:50,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:58:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:50,595 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:58:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:58:50,692 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:58:50,772 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-07 00:58:50,772 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:58:50,782 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:58:50,797 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:58:50,798 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:58:51,134 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-07 00:58:51,324 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-07 00:58:51,840 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 208 for LOIs [2019-10-07 00:58:52,129 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-07 00:58:52,332 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-10-07 00:58:52,452 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-07 00:58:52,722 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-07 00:58:53,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:58:53,535 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: 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.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:58:53,541 INFO L168 Benchmark]: Toolchain (without parser) took 17914.42 ms. Allocated memory was 137.4 MB in the beginning and 630.7 MB in the end (delta: 493.4 MB). Free memory was 95.5 MB in the beginning and 183.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 405.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,542 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1177.83 ms. Allocated memory was 137.4 MB in the beginning and 207.6 MB in the end (delta: 70.3 MB). Free memory was 95.1 MB in the beginning and 132.9 MB in the end (delta: -37.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,544 INFO L168 Benchmark]: Boogie Preprocessor took 201.22 ms. Allocated memory is still 207.6 MB. Free memory was 132.9 MB in the beginning and 121.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,545 INFO L168 Benchmark]: RCFGBuilder took 3016.90 ms. Allocated memory was 207.6 MB in the beginning and 263.2 MB in the end (delta: 55.6 MB). Free memory was 121.1 MB in the beginning and 86.4 MB in the end (delta: 34.8 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,546 INFO L168 Benchmark]: TraceAbstraction took 13513.30 ms. Allocated memory was 263.2 MB in the beginning and 630.7 MB in the end (delta: 367.5 MB). Free memory was 86.4 MB in the beginning and 183.1 MB in the end (delta: -96.7 MB). Peak memory consumption was 270.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:58:53,552 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1177.83 ms. Allocated memory was 137.4 MB in the beginning and 207.6 MB in the end (delta: 70.3 MB). Free memory was 95.1 MB in the beginning and 132.9 MB in the end (delta: -37.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.22 ms. Allocated memory is still 207.6 MB. Free memory was 132.9 MB in the beginning and 121.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3016.90 ms. Allocated memory was 207.6 MB in the beginning and 263.2 MB in the end (delta: 55.6 MB). Free memory was 121.1 MB in the beginning and 86.4 MB in the end (delta: 34.8 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13513.30 ms. Allocated memory was 263.2 MB in the beginning and 630.7 MB in the end (delta: 367.5 MB). Free memory was 86.4 MB in the beginning and 183.1 MB in the end (delta: -96.7 MB). Peak memory consumption was 270.8 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...