java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-tiling/pnr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:39:02,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:39:02,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:39:02,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:39:02,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:39:02,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:39:02,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:39:02,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:39:02,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:39:02,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:39:02,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:39:02,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:39:02,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:39:02,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:39:02,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:39:02,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:39:02,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:39:02,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:39:02,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:39:02,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:39:02,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:39:02,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:39:02,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:39:02,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:39:02,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:39:02,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:39:02,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:39:02,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:39:02,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:39:02,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:39:02,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:39:02,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:39:02,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:39:02,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:39:02,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:39:02,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:39:02,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:39:02,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:39:02,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:39:02,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:39:02,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:39:02,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:39:02,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:39:02,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:39:02,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:39:02,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:39:02,753 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:39:02,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:39:02,754 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:39:02,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:39:02,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:39:02,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:39:02,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:39:02,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:39:02,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:39:02,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:39:02,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:39:02,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:39:02,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:39:02,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:39:02,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:39:02,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:39:02,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:39:02,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:39:02,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:39:02,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:39:02,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:39:02,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:39:02,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:39:02,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:39:02,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:39:03,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:39:03,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:39:03,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:39:03,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:39:03,052 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:39:03,053 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr5.c [2019-10-13 21:39:03,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df755e10e/11fb4802f6dd48ab9639de0858ee8ec6/FLAG7e1ed5c30 [2019-10-13 21:39:03,620 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:39:03,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr5.c [2019-10-13 21:39:03,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df755e10e/11fb4802f6dd48ab9639de0858ee8ec6/FLAG7e1ed5c30 [2019-10-13 21:39:03,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df755e10e/11fb4802f6dd48ab9639de0858ee8ec6 [2019-10-13 21:39:04,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:39:04,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:39:04,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:39:04,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:39:04,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:39:04,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:03" (1/1) ... [2019-10-13 21:39:04,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520ba7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04, skipping insertion in model container [2019-10-13 21:39:04,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:03" (1/1) ... [2019-10-13 21:39:04,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:39:04,053 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:39:04,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:39:04,273 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:39:04,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:39:04,413 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:39:04,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04 WrapperNode [2019-10-13 21:39:04,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:39:04,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:39:04,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:39:04,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:39:04,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... [2019-10-13 21:39:04,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:39:04,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:39:04,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:39:04,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:39:04,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:39:04,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:39:04,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:39:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:39:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2019-10-13 21:39:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:39:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:39:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:39:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:39:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:39:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:39:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2019-10-13 21:39:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:39:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:39:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:39:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:39:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:39:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:39:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:39:05,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:39:05,047 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:39:05,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:05 BoogieIcfgContainer [2019-10-13 21:39:05,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:39:05,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:39:05,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:39:05,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:39:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:39:03" (1/3) ... [2019-10-13 21:39:05,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b303b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:05, skipping insertion in model container [2019-10-13 21:39:05,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:04" (2/3) ... [2019-10-13 21:39:05,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b303b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:05, skipping insertion in model container [2019-10-13 21:39:05,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:05" (3/3) ... [2019-10-13 21:39:05,058 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr5.c [2019-10-13 21:39:05,068 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:39:05,076 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:39:05,088 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:39:05,113 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:39:05,113 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:39:05,113 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:39:05,113 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:39:05,113 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:39:05,114 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:39:05,114 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:39:05,114 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:39:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-13 21:39:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:39:05,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:05,136 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:05,138 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash 939756021, now seen corresponding path program 1 times [2019-10-13 21:39:05,150 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:05,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362510984] [2019-10-13 21:39:05,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:05,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:05,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:39:05,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362510984] [2019-10-13 21:39:05,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:39:05,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:39:05,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473602823] [2019-10-13 21:39:05,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:39:05,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:39:05,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:39:05,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:39:05,500 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-10-13 21:39:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:39:05,701 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2019-10-13 21:39:05,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:39:05,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 21:39:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:39:05,713 INFO L225 Difference]: With dead ends: 64 [2019-10-13 21:39:05,714 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 21:39:05,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:39:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 21:39:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2019-10-13 21:39:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 21:39:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-13 21:39:05,771 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 13 [2019-10-13 21:39:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:39:05,771 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-13 21:39:05,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:39:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-13 21:39:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 21:39:05,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:39:05,774 INFO L380 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:39:05,774 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:39:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:39:05,775 INFO L82 PathProgramCache]: Analyzing trace with hash 280844891, now seen corresponding path program 1 times [2019-10-13 21:39:05,775 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:39:05,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075143582] [2019-10-13 21:39:05,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:05,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:39:05,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:39:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:39:06,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075143582] [2019-10-13 21:39:06,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846254559] [2019-10-13 21:39:06,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:39:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:39:06,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 21:39:06,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:39:06,756 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2019-10-13 21:39:06,757 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:06,791 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:06,803 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2019-10-13 21:39:06,804 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:06,831 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:06,832 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:06,833 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:46 [2019-10-13 21:39:06,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:06,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:06,924 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2019-10-13 21:39:06,925 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:06,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:06,943 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2019-10-13 21:39:06,944 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:06,979 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:06,981 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:06,981 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:83, output treesize:72 [2019-10-13 21:39:07,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:07,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,081 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2019-10-13 21:39:07,082 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,102 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,104 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,112 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-10-13 21:39:07,114 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,156 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:07,157 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:07,158 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:109, output treesize:98 [2019-10-13 21:39:07,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:07,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,255 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,256 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,279 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 74 [2019-10-13 21:39:07,281 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,305 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,307 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,315 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 70 [2019-10-13 21:39:07,319 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,377 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:07,378 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:07,379 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:124 [2019-10-13 21:39:07,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:07,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,520 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,523 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,628 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2019-10-13 21:39:07,630 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,639 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,640 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,642 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,645 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,646 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:39:07,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2019-10-13 21:39:07,664 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,758 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:07,760 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:07,760 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:118, output treesize:104 [2019-10-13 21:39:07,922 INFO L341 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2019-10-13 21:39:07,922 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 24 [2019-10-13 21:39:07,925 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,929 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:07,929 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:39:07,930 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:59, output treesize:8 [2019-10-13 21:39:07,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:39:07,995 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:39:08,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:08,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:08,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:08,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:08,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:39:08,168 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2019-10-13 21:39:08,177 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-13 21:39:08,178 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-13 21:39:08,188 INFO L567 ElimStorePlain]: treesize reduction 15, result has 44.4 percent of original size [2019-10-13 21:39:08,189 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:39:08,196 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:39:08,199 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-10-13 21:39:08,206 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2019-10-13 21:39:08,206 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2019-10-13 21:39:08,221 INFO L567 ElimStorePlain]: treesize reduction 10, result has 56.5 percent of original size [2019-10-13 21:39:08,221 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:39:08,229 INFO L567 ElimStorePlain]: treesize reduction 12, result has 52.0 percent of original size [2019-10-13 21:39:08,230 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-13 21:39:08,231 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:37, output treesize:13 [2019-10-13 21:39:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 21:39:08,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714888690] [2019-10-13 21:39:08,314 INFO L162 IcfgInterpreter]: Started Sifa with 26 locations of interest [2019-10-13 21:39:08,314 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:39:08,320 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:39:08,329 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:39:08,330 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:39:08,460 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-10-13 21:39:08,660 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:39:08,778 WARN L225 Elim1Store]: Array PQE input equivalent to false