/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/array-multidimensional/copy-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:19:03,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:19:03,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:19:03,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:19:03,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:19:03,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:19:03,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:19:03,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:19:03,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:19:03,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:19:03,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:19:03,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:19:03,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:19:03,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:19:03,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:19:03,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:19:03,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:19:03,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:19:03,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:19:03,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:19:03,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:19:03,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:19:03,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:19:03,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:19:03,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:19:03,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:19:03,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:19:03,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:19:03,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:19:03,821 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:19:03,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:19:03,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:19:03,823 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:19:03,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:19:03,823 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:19:03,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:19:03,824 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:19:03,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:19:03,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:19:03,825 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:19:03,825 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:19:03,825 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:19:03,826 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:19:03,826 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:19:03,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:19:03,827 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:19:03,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:19:03,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:19:03,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:19:03,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:19:03,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:19:03,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:19:03,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:19:03,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:19:03,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:19:03,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:19:03,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:19:03,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:19:03,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:19:03,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:19:03,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:19:03,833 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:19:04,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:19:04,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:19:04,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:19:04,123 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:19:04,123 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:19:04,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-2-u.c [2019-11-23 23:19:04,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb507c15c/fd8cd713c585415aa05da01e095b8bd1/FLAGc2e71f37a [2019-11-23 23:19:04,671 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:19:04,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-2-u.c [2019-11-23 23:19:04,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb507c15c/fd8cd713c585415aa05da01e095b8bd1/FLAGc2e71f37a [2019-11-23 23:19:05,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb507c15c/fd8cd713c585415aa05da01e095b8bd1 [2019-11-23 23:19:05,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:19:05,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:19:05,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:19:05,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:19:05,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:19:05,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e56186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05, skipping insertion in model container [2019-11-23 23:19:05,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:19:05,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:19:05,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:19:05,288 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:19:05,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:19:05,336 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:19:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05 WrapperNode [2019-11-23 23:19:05,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:19:05,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:19:05,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:19:05,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:19:05,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:19:05,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:19:05,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:19:05,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:19:05,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... [2019-11-23 23:19:05,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:19:05,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:19:05,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:19:05,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:19:05,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:19:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:19:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:19:05,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:19:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:19:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:19:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:19:05,934 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:19:05,935 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-23 23:19:05,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:19:05 BoogieIcfgContainer [2019-11-23 23:19:05,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:19:05,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:19:05,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:19:05,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:19:05,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:19:05" (1/3) ... [2019-11-23 23:19:05,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b6b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:19:05, skipping insertion in model container [2019-11-23 23:19:05,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:05" (2/3) ... [2019-11-23 23:19:05,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4b6b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:19:05, skipping insertion in model container [2019-11-23 23:19:05,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:19:05" (3/3) ... [2019-11-23 23:19:05,944 INFO L109 eAbstractionObserver]: Analyzing ICFG copy-2-u.c [2019-11-23 23:19:05,959 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:19:05,968 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:19:05,979 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:19:05,998 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:19:05,998 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:19:05,998 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:19:05,998 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:19:05,999 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:19:05,999 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:19:05,999 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:19:05,999 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:19:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-23 23:19:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:19:06,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:19:06,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:19:06,017 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:19:06,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:19:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1201755021, now seen corresponding path program 1 times [2019-11-23 23:19:06,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:19:06,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472056525] [2019-11-23 23:19:06,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:19:06,093 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:19:06,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045002365] [2019-11-23 23:19:06,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:19:06,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:19:06,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:19:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:19:06,210 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:19:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:19:06,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472056525] [2019-11-23 23:19:06,223 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:19:06,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045002365] [2019-11-23 23:19:06,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:19:06,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-23 23:19:06,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128637872] [2019-11-23 23:19:06,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:19:06,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:19:06,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:19:06,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:19:06,242 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-23 23:19:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:19:06,331 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2019-11-23 23:19:06,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:19:06,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 23:19:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:19:06,343 INFO L225 Difference]: With dead ends: 24 [2019-11-23 23:19:06,344 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 23:19:06,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:19:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 23:19:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 23:19:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 23:19:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-23 23:19:06,379 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 20 transitions. Word has length 7 [2019-11-23 23:19:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:19:06,380 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-23 23:19:06,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:19:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2019-11-23 23:19:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:19:06,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:19:06,381 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:19:06,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:06,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:19:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:19:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1878137967, now seen corresponding path program 1 times [2019-11-23 23:19:06,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:19:06,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796556048] [2019-11-23 23:19:06,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:19:06,592 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:19:06,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921035907] [2019-11-23 23:19:06,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:19:06,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:19:06,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:19:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:19:06,672 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:19:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:19:06,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796556048] [2019-11-23 23:19:06,692 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:19:06,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921035907] [2019-11-23 23:19:06,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:19:06,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-23 23:19:06,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93994481] [2019-11-23 23:19:06,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 23:19:06,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:19:06,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 23:19:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-23 23:19:06,698 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. Second operand 6 states. [2019-11-23 23:19:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:19:06,813 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2019-11-23 23:19:06,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 23:19:06,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-23 23:19:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:19:06,815 INFO L225 Difference]: With dead ends: 39 [2019-11-23 23:19:06,815 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 23:19:06,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-23 23:19:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 23:19:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-11-23 23:19:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 23:19:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-23 23:19:06,825 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 11 [2019-11-23 23:19:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:19:06,826 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-23 23:19:06,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 23:19:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-23 23:19:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 23:19:06,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:19:06,827 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:19:07,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:07,031 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:19:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:19:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -805007761, now seen corresponding path program 1 times [2019-11-23 23:19:07,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:19:07,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139327944] [2019-11-23 23:19:07,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:19:07,041 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:19:07,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453113345] [2019-11-23 23:19:07,041 INFO L94 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 [2019-11-23 23:19:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:19:07,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 23:19:07,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:19:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 23:19:07,147 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:19:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 23:19:07,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139327944] [2019-11-23 23:19:07,190 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:19:07,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453113345] [2019-11-23 23:19:07,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [450272996] [2019-11-23 23:19:07,223 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-23 23:19:07,223 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:19:07,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:19:07,235 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:19:07,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:19:07,747 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,135 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,259 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,272 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,285 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,778 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 155 [2019-11-23 23:19:08,895 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,911 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:08,981 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:09,018 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:09,071 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:09,084 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:09,097 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:09,355 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 182 [2019-11-23 23:19:09,494 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 182 [2019-11-23 23:19:09,612 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-11-23 23:19:09,769 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2019-11-23 23:19:09,941 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2019-11-23 23:19:10,227 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 192 [2019-11-23 23:19:10,325 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,372 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,390 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,449 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,467 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,486 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,504 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,634 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,710 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,796 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:10,855 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:11,144 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-23 23:19:11,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-23 23:19:11,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2019-11-23 23:19:11,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733880842] [2019-11-23 23:19:11,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 23:19:11,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:19:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 23:19:11,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-23 23:19:11,272 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-23 23:19:11,386 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-11-23 23:19:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:19:11,455 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2019-11-23 23:19:11,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 23:19:11,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-23 23:19:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:19:11,458 INFO L225 Difference]: With dead ends: 43 [2019-11-23 23:19:11,459 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 23:19:11,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-23 23:19:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 23:19:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2019-11-23 23:19:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 23:19:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2019-11-23 23:19:11,466 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 15 [2019-11-23 23:19:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:19:11,466 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2019-11-23 23:19:11,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 23:19:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2019-11-23 23:19:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 23:19:11,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:19:11,468 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:19:11,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:11,671 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:19:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:19:11,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1044177869, now seen corresponding path program 1 times [2019-11-23 23:19:11,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:19:11,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856610041] [2019-11-23 23:19:11,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:19:11,682 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 23:19:11,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925417135] [2019-11-23 23:19:11,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:19:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:19:11,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 23:19:11,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:19:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-23 23:19:11,765 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:19:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-23 23:19:11,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856610041] [2019-11-23 23:19:11,800 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 23:19:11,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925417135] [2019-11-23 23:19:11,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [131771282] [2019-11-23 23:19:11,803 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 23:19:11,803 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:19:11,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:19:11,804 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:19:11,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:19:12,025 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,273 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,335 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,345 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,377 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,844 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,858 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,871 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,923 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,959 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:12,970 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:13,012 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:13,331 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-23 23:19:13,456 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 198 [2019-11-23 23:19:13,624 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 198 [2019-11-23 23:19:13,821 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-11-23 23:19:13,995 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2019-11-23 23:19:14,521 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,634 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,651 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,799 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,816 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,835 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,857 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,925 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,942 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,958 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:14,972 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:15,033 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:15,092 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-23 23:19:15,769 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:16,045 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:16,269 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:16,902 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:16,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:16,983 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:17,310 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:17,755 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:17,898 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-11-23 23:19:18,211 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:18,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:18,391 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:18,929 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:19,103 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:19,544 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:19,793 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:19,822 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:19,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:20,061 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-23 23:19:20,304 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:20,582 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:20,787 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:21,274 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:21,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:21,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:21,767 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:22,200 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:22,510 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:22,698 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:22,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:23,120 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:23,322 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:23,853 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:24,170 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:24,194 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:24,198 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:24,548 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:24,726 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:25,096 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:25,357 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:25,693 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:25,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:25,983 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:26,436 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:26,902 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:27,077 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:27,102 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:27,106 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:27,345 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:27,564 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:28,050 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:28,505 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:28,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:28,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:29,341 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:29,521 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:29,791 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:30,242 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:30,273 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:30,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:30,531 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:30,846 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:31,330 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:31,817 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:31,871 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:31,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:32,199 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:32,769 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:32,961 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:33,302 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:33,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:33,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:33,894 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:34,706 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:34,997 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:35,348 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:35,467 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:35,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:36,378 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:36,648 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:37,442 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:37,677 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:37,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:37,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:38,951 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:39,389 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:39,610 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:39,881 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:40,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:40,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:40,923 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:41,240 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:42,211 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:42,501 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:42,600 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:42,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:42,909 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:43,131 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:43,292 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:44,919 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:45,067 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:45,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:45,404 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:45,925 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:46,732 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:47,056 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:47,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:47,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:48,436 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:48,807 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-23 23:19:49,460 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:49,961 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:50,297 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:50,301 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:50,809 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:51,163 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:52,477 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:52,851 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:52,902 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:52,907 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:53,912 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:54,296 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:54,834 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:55,299 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:19:55,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:55,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:57,350 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:19:57,652 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:19:58,431 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:19:58,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:58,527 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:19:59,535 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:00,369 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:00,885 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:01,471 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:01,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:01,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:01,888 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:02,086 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:02,993 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:04,425 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:04,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:04,624 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:05,404 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:05,699 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:06,899 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:07,470 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:07,704 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:07,710 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:08,098 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:08,480 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:08,777 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:09,724 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:10,885 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:10,890 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:12,059 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:12,926 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:13,352 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-23 23:20:13,970 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:14,243 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:14,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:14,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:15,492 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:16,527 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:16,855 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:17,412 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:17,617 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:17,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:18,684 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:18,950 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:19,562 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:19,836 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:20,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:20,947 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:21,245 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:22,493 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:23,239 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:24,213 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:24,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:24,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:24,805 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:26,484 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:26,955 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:27,476 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:27,869 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:27,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:28,519 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:29,119 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:29,478 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:30,120 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-23 23:20:30,402 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:31,493 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 226 [2019-11-23 23:20:31,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:31,510 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:32,220 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-11-23 23:20:32,620 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-11-23 23:20:33,664 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-11-23 23:20:34,264 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-11-23 23:20:35,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:35,335 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-23 23:20:35,859 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59