/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:10:02,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:10:02,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:10:02,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:10:02,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:10:02,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:10:02,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:10:02,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:10:02,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:10:02,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:10:02,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:10:02,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:10:02,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:10:02,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:10:02,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:10:02,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:10:02,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:10:02,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:10:02,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:10:02,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:10:02,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:10:02,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:10:02,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:10:02,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:10:02,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:10:02,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:10:02,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:10:02,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:10:02,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:10:02,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:10:02,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:10:02,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:10:02,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:10:02,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:10:02,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:10:02,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:10:02,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:10:02,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:10:02,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:10:02,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:10:02,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:10:02,994 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 [2020-07-20 21:10:03,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:10:03,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:10:03,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:10:03,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:10:03,019 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:10:03,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:10:03,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:10:03,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:10:03,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:10:03,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:10:03,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:10:03,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:10:03,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:10:03,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:10:03,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:10:03,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:10:03,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:10:03,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:10:03,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:10:03,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:10:03,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:10:03,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:10:03,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:10:03,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:10:03,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:10:03,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:10:03,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:03,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:10:03,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:10:03,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:10:03,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:10:03,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:10:03,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:10:03,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:10:03,329 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:10:03,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 21:10:03,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d8a8fb0/e70bbaa4611e4873bff3bcbcdab89f5d/FLAGa27038872 [2020-07-20 21:10:03,822 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:10:03,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 21:10:03,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d8a8fb0/e70bbaa4611e4873bff3bcbcdab89f5d/FLAGa27038872 [2020-07-20 21:10:04,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d8a8fb0/e70bbaa4611e4873bff3bcbcdab89f5d [2020-07-20 21:10:04,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:10:04,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:10:04,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:10:04,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:10:04,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:10:04,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d37557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04, skipping insertion in model container [2020-07-20 21:10:04,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:10:04,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:10:04,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:10:04,485 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:10:04,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:10:04,519 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:10:04,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04 WrapperNode [2020-07-20 21:10:04,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:10:04,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:10:04,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:10:04,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:10:04,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (1/1) ... [2020-07-20 21:10:04,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:10:04,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:10:04,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:10:04,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:10:04,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (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 [2020-07-20 21:10:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:10:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:10:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-20 21:10:04,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:10:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:10:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:10:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-20 21:10:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:10:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:10:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:10:05,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:10:05,020 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:10:05,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:10:05 BoogieIcfgContainer [2020-07-20 21:10:05,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:10:05,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:10:05,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:10:05,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:10:05,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:10:04" (1/3) ... [2020-07-20 21:10:05,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593274d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:10:05, skipping insertion in model container [2020-07-20 21:10:05,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:10:04" (2/3) ... [2020-07-20 21:10:05,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593274d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:10:05, skipping insertion in model container [2020-07-20 21:10:05,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:10:05" (3/3) ... [2020-07-20 21:10:05,036 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-07-20 21:10:05,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:10:05,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:10:05,077 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:10:05,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:10:05,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:10:05,112 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:10:05,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:10:05,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:10:05,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:10:05,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:10:05,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:10:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 21:10:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 21:10:05,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:05,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:05,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:05,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2020-07-20 21:10:05,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:05,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163431897] [2020-07-20 21:10:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:05,292 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:10:05,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:05,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:10:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:10:05,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:10:05,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163431897] [2020-07-20 21:10:05,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:10:05,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:10:05,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942412850] [2020-07-20 21:10:05,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:10:05,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:10:05,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:10:05,425 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 21:10:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:05,554 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 21:10:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:10:05,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 21:10:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:05,569 INFO L225 Difference]: With dead ends: 36 [2020-07-20 21:10:05,570 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 21:10:05,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:10:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 21:10:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 21:10:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 21:10:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 21:10:05,627 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-07-20 21:10:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:05,628 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 21:10:05,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:10:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 21:10:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 21:10:05,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:05,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:05,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:05,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times [2020-07-20 21:10:05,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:05,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058711712] [2020-07-20 21:10:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:05,880 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:10:05,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:05,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:10:05,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:10:05,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:10:05,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058711712] [2020-07-20 21:10:05,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:10:05,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:10:05,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390938608] [2020-07-20 21:10:05,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:10:05,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:05,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:10:05,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:10:05,924 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2020-07-20 21:10:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:06,025 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-07-20 21:10:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:10:06,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 21:10:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:06,027 INFO L225 Difference]: With dead ends: 28 [2020-07-20 21:10:06,027 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 21:10:06,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:10:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 21:10:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 21:10:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 21:10:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 21:10:06,038 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-20 21:10:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:06,039 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 21:10:06,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:10:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 21:10:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 21:10:06,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:06,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:06,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:06,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2020-07-20 21:10:06,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:06,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407601709] [2020-07-20 21:10:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:06,297 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:06,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:06,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:10:06,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 21:10:06,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:06,608 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:06,613 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 21:10:06,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407601709] [2020-07-20 21:10:06,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:06,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-07-20 21:10:06,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017891903] [2020-07-20 21:10:06,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 21:10:06,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:06,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 21:10:06,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-20 21:10:06,667 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 10 states. [2020-07-20 21:10:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:06,803 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2020-07-20 21:10:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:10:06,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-20 21:10:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:06,806 INFO L225 Difference]: With dead ends: 40 [2020-07-20 21:10:06,807 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 21:10:06,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-07-20 21:10:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 21:10:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-20 21:10:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 21:10:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2020-07-20 21:10:06,820 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 27 [2020-07-20 21:10:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:06,821 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2020-07-20 21:10:06,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 21:10:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2020-07-20 21:10:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 21:10:06,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:06,825 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:07,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:07,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1554048393, now seen corresponding path program 1 times [2020-07-20 21:10:07,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:07,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244666243] [2020-07-20 21:10:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:07,094 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:07,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 21:10:07,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 21:10:07,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:07,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:07,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:07,507 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 21:10:07,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244666243] [2020-07-20 21:10:07,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:07,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2020-07-20 21:10:07,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110842907] [2020-07-20 21:10:07,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 21:10:07,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 21:10:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-07-20 21:10:07,550 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 12 states. [2020-07-20 21:10:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:07,781 INFO L93 Difference]: Finished difference Result 58 states and 115 transitions. [2020-07-20 21:10:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 21:10:07,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-07-20 21:10:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:07,786 INFO L225 Difference]: With dead ends: 58 [2020-07-20 21:10:07,786 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 21:10:07,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-07-20 21:10:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 21:10:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2020-07-20 21:10:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 21:10:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2020-07-20 21:10:07,804 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 55 [2020-07-20 21:10:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:07,805 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2020-07-20 21:10:07,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 21:10:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2020-07-20 21:10:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 21:10:07,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:07,816 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:08,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:08,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash 433565041, now seen corresponding path program 2 times [2020-07-20 21:10:08,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:08,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293674963] [2020-07-20 21:10:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:08,146 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:08,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:08,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 21:10:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 379 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2020-07-20 21:10:08,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:09,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,448 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,502 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,503 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2020-07-20 21:10:09,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293674963] [2020-07-20 21:10:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 16 [2020-07-20 21:10:09,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676200370] [2020-07-20 21:10:09,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 21:10:09,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 21:10:09,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-07-20 21:10:09,597 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 16 states. [2020-07-20 21:10:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:10,046 INFO L93 Difference]: Finished difference Result 73 states and 184 transitions. [2020-07-20 21:10:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 21:10:10,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-07-20 21:10:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:10,052 INFO L225 Difference]: With dead ends: 73 [2020-07-20 21:10:10,052 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 21:10:10,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-07-20 21:10:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 21:10:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2020-07-20 21:10:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 21:10:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 91 transitions. [2020-07-20 21:10:10,077 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 91 transitions. Word has length 157 [2020-07-20 21:10:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:10,078 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 91 transitions. [2020-07-20 21:10:10,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 21:10:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 91 transitions. [2020-07-20 21:10:10,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-20 21:10:10,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:10,085 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 29, 17, 17, 17, 17, 17, 17, 17, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:10,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:10,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1759711241, now seen corresponding path program 2 times [2020-07-20 21:10:10,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:10,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188244559] [2020-07-20 21:10:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:10,424 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:10,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:10,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 21:10:10,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 828 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2020-07-20 21:10:10,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:11,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,217 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,315 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,368 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,370 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 132 proven. 868 refuted. 0 times theorem prover too weak. 2330 trivial. 0 not checked. [2020-07-20 21:10:12,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188244559] [2020-07-20 21:10:12,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:12,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 18 [2020-07-20 21:10:12,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934369897] [2020-07-20 21:10:12,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 21:10:12,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:12,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 21:10:12,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-07-20 21:10:12,460 INFO L87 Difference]: Start difference. First operand 47 states and 91 transitions. Second operand 18 states. [2020-07-20 21:10:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:12,968 INFO L93 Difference]: Finished difference Result 88 states and 271 transitions. [2020-07-20 21:10:12,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 21:10:12,968 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 247 [2020-07-20 21:10:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:12,981 INFO L225 Difference]: With dead ends: 88 [2020-07-20 21:10:12,981 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 21:10:12,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-07-20 21:10:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 21:10:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52. [2020-07-20 21:10:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 21:10:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 110 transitions. [2020-07-20 21:10:13,040 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 110 transitions. Word has length 247 [2020-07-20 21:10:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:13,041 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 110 transitions. [2020-07-20 21:10:13,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 21:10:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 110 transitions. [2020-07-20 21:10:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2020-07-20 21:10:13,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:13,111 INFO L422 BasicCegarLoop]: trace histogram [179, 179, 90, 89, 89, 89, 89, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:13,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:13,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:13,326 INFO L82 PathProgramCache]: Analyzing trace with hash 396575871, now seen corresponding path program 3 times [2020-07-20 21:10:13,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:13,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352557808] [2020-07-20 21:10:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:13,721 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:13,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:13,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 21:10:13,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6102 refuted. 0 times theorem prover too weak. 76211 trivial. 0 not checked. [2020-07-20 21:10:14,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:18,769 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:19,851 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:20,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,066 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:21,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 83304 backedges. 991 proven. 6172 refuted. 0 times theorem prover too weak. 76141 trivial. 0 not checked. [2020-07-20 21:10:22,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352557808] [2020-07-20 21:10:22,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:22,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 22 [2020-07-20 21:10:22,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617253988] [2020-07-20 21:10:22,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 21:10:22,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 21:10:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-07-20 21:10:22,079 INFO L87 Difference]: Start difference. First operand 52 states and 110 transitions. Second operand 22 states. [2020-07-20 21:10:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:22,658 INFO L93 Difference]: Finished difference Result 103 states and 376 transitions. [2020-07-20 21:10:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 21:10:22,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1171 [2020-07-20 21:10:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:22,668 INFO L225 Difference]: With dead ends: 103 [2020-07-20 21:10:22,668 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 21:10:22,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2351 GetRequests, 2307 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-07-20 21:10:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 21:10:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 62. [2020-07-20 21:10:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 21:10:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 154 transitions. [2020-07-20 21:10:22,693 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 154 transitions. Word has length 1171 [2020-07-20 21:10:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:22,696 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 154 transitions. [2020-07-20 21:10:22,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 21:10:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 154 transitions. [2020-07-20 21:10:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1796 [2020-07-20 21:10:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:22,761 INFO L422 BasicCegarLoop]: trace histogram [263, 263, 209, 131, 131, 131, 131, 131, 131, 131, 78, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:22,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:22,976 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1095714831, now seen corresponding path program 3 times [2020-07-20 21:10:22,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:22,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953550515] [2020-07-20 21:10:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:23,549 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:23,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:23,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3357 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 21:10:23,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 193608 backedges. 31016 proven. 418 refuted. 0 times theorem prover too weak. 162174 trivial. 0 not checked. [2020-07-20 21:10:24,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:32,960 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:32,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,072 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,129 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,131 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,548 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,637 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:33,687 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 193608 backedges. 1796 proven. 13893 refuted. 0 times theorem prover too weak. 177919 trivial. 0 not checked. [2020-07-20 21:10:34,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953550515] [2020-07-20 21:10:34,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:34,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 21 [2020-07-20 21:10:34,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017015512] [2020-07-20 21:10:34,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:10:34,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:34,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:10:34,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-07-20 21:10:34,975 INFO L87 Difference]: Start difference. First operand 62 states and 154 transitions. Second operand 21 states. [2020-07-20 21:10:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:35,536 INFO L93 Difference]: Finished difference Result 135 states and 390 transitions. [2020-07-20 21:10:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 21:10:35,537 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1795 [2020-07-20 21:10:35,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:35,540 INFO L225 Difference]: With dead ends: 135 [2020-07-20 21:10:35,540 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 21:10:35,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3605 GetRequests, 3553 SyntacticMatches, 17 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 21:10:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 21:10:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 21:10:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 21:10:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 123 transitions. [2020-07-20 21:10:35,558 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 123 transitions. Word has length 1795 [2020-07-20 21:10:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:35,559 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 123 transitions. [2020-07-20 21:10:35,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 21:10:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2020-07-20 21:10:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-07-20 21:10:35,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:35,571 INFO L422 BasicCegarLoop]: trace histogram [143, 143, 116, 71, 71, 71, 71, 71, 71, 71, 45, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:35,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:35,785 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1023890443, now seen corresponding path program 4 times [2020-07-20 21:10:35,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:35,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31960183] [2020-07-20 21:10:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:36,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:36,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:36,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 21:10:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 57222 backedges. 26530 proven. 1596 refuted. 0 times theorem prover too weak. 29096 trivial. 0 not checked. [2020-07-20 21:10:36,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:42,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,819 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,878 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:42,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,047 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,515 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,633 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:44,695 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 57222 backedges. 1672 proven. 8470 refuted. 0 times theorem prover too weak. 47080 trivial. 0 not checked. [2020-07-20 21:10:45,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31960183] [2020-07-20 21:10:45,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:45,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 29 [2020-07-20 21:10:45,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800650127] [2020-07-20 21:10:45,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 21:10:45,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 21:10:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-07-20 21:10:45,095 INFO L87 Difference]: Start difference. First operand 80 states and 123 transitions. Second operand 29 states. [2020-07-20 21:10:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:10:46,320 INFO L93 Difference]: Finished difference Result 189 states and 388 transitions. [2020-07-20 21:10:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 21:10:46,321 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 982 [2020-07-20 21:10:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:10:46,326 INFO L225 Difference]: With dead ends: 189 [2020-07-20 21:10:46,326 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 21:10:46,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1989 GetRequests, 1911 SyntacticMatches, 25 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 21:10:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 21:10:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2020-07-20 21:10:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 21:10:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2020-07-20 21:10:46,346 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 982 [2020-07-20 21:10:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:10:46,347 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2020-07-20 21:10:46,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 21:10:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2020-07-20 21:10:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2020-07-20 21:10:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:10:46,388 INFO L422 BasicCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:10:46,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:46,589 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:10:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:10:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash 838202223, now seen corresponding path program 5 times [2020-07-20 21:10:46,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:10:46,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007485757] [2020-07-20 21:10:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:10:46,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:10:46,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:10:46,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 21:10:47,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:10:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 4043 proven. 7419 refuted. 0 times theorem prover too weak. 39448 trivial. 0 not checked. [2020-07-20 21:10:47,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:10:51,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:52,583 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:52,584 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,117 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,538 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,768 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,902 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:53,974 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:56,404 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:57,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:57,685 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:57,976 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,165 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,166 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:10:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 4043 proven. 7566 refuted. 0 times theorem prover too weak. 39301 trivial. 0 not checked. [2020-07-20 21:10:58,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007485757] [2020-07-20 21:10:58,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:10:58,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 35] total 37 [2020-07-20 21:10:58,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105809426] [2020-07-20 21:10:58,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 21:10:58,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:10:58,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 21:10:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 21:10:58,781 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand 37 states. [2020-07-20 21:11:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:11:00,648 INFO L93 Difference]: Finished difference Result 258 states and 499 transitions. [2020-07-20 21:11:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 21:11:00,649 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 927 [2020-07-20 21:11:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:11:00,653 INFO L225 Difference]: With dead ends: 258 [2020-07-20 21:11:00,653 INFO L226 Difference]: Without dead ends: 163 [2020-07-20 21:11:00,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1889 GetRequests, 1785 SyntacticMatches, 33 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2020-07-20 21:11:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-20 21:11:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-07-20 21:11:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-20 21:11:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2020-07-20 21:11:00,675 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 927 [2020-07-20 21:11:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:11:00,677 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2020-07-20 21:11:00,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 21:11:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2020-07-20 21:11:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2020-07-20 21:11:00,684 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:11:00,685 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:11:00,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:00,899 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:11:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:11:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 6 times [2020-07-20 21:11:00,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:11:00,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198419052] [2020-07-20 21:11:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:11:01,361 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:11:01,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:11:01,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 220 conjunts are in the unsatisfiable core [2020-07-20 21:11:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:11:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 21:11:02,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:11:03,477 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:04,239 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:04,449 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:04,657 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:04,869 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:05,825 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:05,927 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:06,378 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:06,835 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:07,300 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:07,767 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:08,520 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:08,728 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:08,833 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:09,516 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:09,724 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:09,993 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:10,207 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:11,299 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 21:11:12,392 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 21:11:13,549 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 21:11:14,677 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 21:11:15,478 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:15,583 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:15,696 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:15,809 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:16,521 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:16,737 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:16,967 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:17,196 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:17,999 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:18,106 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:18,220 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:18,332 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:18,821 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:19,325 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:19,918 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:20,419 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:23,263 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification that was a NOOP. DAG size: 491 [2020-07-20 21:11:26,178 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification that was a NOOP. DAG size: 491 [2020-07-20 21:11:29,147 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 493 [2020-07-20 21:11:32,077 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification that was a NOOP. DAG size: 493 [2020-07-20 21:11:33,188 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:33,307 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:33,437 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:33,567 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:34,410 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:34,658 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:11:34,915 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:35,170 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:36,170 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:36,302 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:11:36,431 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:36,564 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:37,112 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:37,661 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:11:38,214 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:38,777 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:11:39,359 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-07-20 21:11:39,914 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2020-07-20 21:11:40,534 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-07-20 21:11:41,062 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-07-20 21:11:41,574 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-07-20 21:11:42,097 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-07-20 21:11:42,604 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2020-07-20 21:11:43,094 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 245 [2020-07-20 21:11:43,591 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-07-20 21:11:44,070 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-07-20 21:11:44,555 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-07-20 21:11:45,013 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-07-20 21:11:45,469 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-07-20 21:11:45,922 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-07-20 21:11:46,368 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-07-20 21:11:46,805 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-07-20 21:11:47,227 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-07-20 21:11:47,638 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-07-20 21:11:48,044 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-07-20 21:11:48,434 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-07-20 21:11:48,819 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-20 21:11:49,206 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-20 21:11:49,576 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-20 21:11:49,950 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 21:11:50,304 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-07-20 21:11:50,647 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-07-20 21:11:50,976 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-07-20 21:11:51,305 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-07-20 21:11:51,629 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-07-20 21:11:51,948 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-07-20 21:11:52,259 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-20 21:11:52,562 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-07-20 21:11:52,860 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-07-20 21:11:53,202 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-07-20 21:11:53,485 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-07-20 21:11:53,756 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-07-20 21:11:54,027 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-07-20 21:11:54,293 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-20 21:11:54,557 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-07-20 21:11:54,808 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-07-20 21:11:55,046 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-07-20 21:11:55,279 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-07-20 21:11:55,509 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-07-20 21:11:55,737 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 21:11:55,944 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:11:56,145 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-07-20 21:11:56,346 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-07-20 21:11:56,538 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-07-20 21:11:56,722 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-07-20 21:11:56,896 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-20 21:11:57,056 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-07-20 21:11:57,221 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-07-20 21:11:57,375 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-20 21:11:57,527 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-07-20 21:11:57,665 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 21:11:57,798 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-07-20 21:11:57,929 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-07-20 21:11:58,054 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-07-20 21:11:58,167 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-07-20 21:11:58,275 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:11:58,379 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-07-20 21:12:00,562 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:00,715 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:00,873 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:01,029 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:01,187 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-07-20 21:12:01,335 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 21:12:01,474 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 21:12:01,603 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-20 21:12:01,722 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-07-20 21:12:01,843 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-20 21:12:01,958 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-20 21:12:02,067 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-07-20 21:12:02,169 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-07-20 21:12:06,825 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:07,588 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:07,739 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:07,902 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:08,059 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:09,178 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:09,466 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:09,778 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:10,106 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:13,329 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:14,135 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:14,347 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:14,504 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:14,660 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:18,934 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:19,093 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:19,262 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:19,430 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:20,625 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:20,934 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:21,254 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:21,566 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:23,003 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:23,175 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:23,353 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:23,521 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:24,149 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:12:24,770 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:12:25,444 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:12:26,097 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:12:27,636 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:27,805 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:27,983 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:28,164 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:29,463 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:29,785 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:30,123 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:30,459 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:31,905 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 21:12:33,419 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 302 [2020-07-20 21:12:34,941 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 21:12:36,458 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 304 [2020-07-20 21:12:37,394 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:37,504 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:37,608 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:37,715 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:38,482 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:38,726 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:38,971 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:39,171 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:40,146 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:40,251 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:40,605 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:40,956 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:12:41,319 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:41,681 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:42,055 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-07-20 21:12:42,413 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-07-20 21:12:42,759 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-07-20 21:12:43,097 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-07-20 21:12:43,432 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-07-20 21:12:43,750 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-07-20 21:12:44,062 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-07-20 21:12:44,375 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-07-20 21:12:44,668 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-07-20 21:12:44,953 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-07-20 21:12:45,224 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-07-20 21:12:45,495 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-07-20 21:12:45,759 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-07-20 21:12:46,010 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-07-20 21:12:46,254 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:12:46,470 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-07-20 21:12:46,674 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-07-20 21:12:46,870 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-07-20 21:12:47,043 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-07-20 21:12:47,206 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 21:12:47,367 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 21:12:47,521 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-20 21:12:47,666 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-07-20 21:12:47,806 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 21:12:47,961 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 21:12:48,114 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-07-20 21:12:48,268 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-07-20 21:12:48,421 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-20 21:12:48,567 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:48,704 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-07-20 21:12:48,834 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-07-20 21:12:48,954 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 21:12:49,060 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-07-20 21:12:49,163 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-07-20 21:12:50,927 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:51,036 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:51,151 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 21:12:51,262 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 21:12:53,961 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:54,064 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:54,175 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:54,288 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:54,960 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:55,148 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:12:55,345 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:55,541 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:12:57,462 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:12:57,669 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:12:57,778 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:00,109 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:00,219 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:00,907 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:01,100 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:01,291 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:01,471 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:02,442 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:02,573 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:02,953 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:13:03,318 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:13:03,684 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:13:04,057 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:13:04,886 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:04,989 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:05,105 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:05,219 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:05,902 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:06,095 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:06,291 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:06,492 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:07,207 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:13:07,933 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-07-20 21:13:08,686 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:13:09,445 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 21:13:10,364 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:10,469 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:10,584 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:10,698 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:11,399 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:11,599 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:11,810 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:12,025 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:12,243 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-07-20 21:13:12,448 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-07-20 21:13:12,642 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-07-20 21:13:12,825 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-07-20 21:13:12,992 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-07-20 21:13:13,148 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-07-20 21:13:13,305 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-07-20 21:13:13,454 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-20 21:13:13,599 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:13,736 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:13,867 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-07-20 21:13:13,996 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 21:13:14,118 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-07-20 21:13:14,238 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-07-20 21:13:14,357 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-20 21:13:14,464 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-07-20 21:13:17,000 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:17,115 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:17,237 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:17,358 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:19,733 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:19,842 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:19,965 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:20,086 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:20,826 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:21,028 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:21,242 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:21,450 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:22,350 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:22,479 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:22,600 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:22,719 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:23,101 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:13:23,548 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-07-20 21:13:23,951 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:13:24,353 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-07-20 21:13:25,315 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:25,428 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:25,549 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:25,662 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:25,786 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 21:13:25,901 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 21:13:26,004 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-20 21:13:26,107 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-07-20 21:13:28,914 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:29,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:29,135 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:29,250 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:29,999 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:30,213 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 21:13:30,428 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:30,636 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-07-20 21:13:32,726 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:32,853 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 21:13:32,974 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:33,087 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-07-20 21:13:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 21:13:34,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198419052] [2020-07-20 21:13:34,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:13:34,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-20 21:13:34,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120756220] [2020-07-20 21:13:34,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 21:13:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:13:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 21:13:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 21:13:34,889 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 36 states. [2020-07-20 21:13:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:13:35,758 INFO L93 Difference]: Finished difference Result 131 states and 188 transitions. [2020-07-20 21:13:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 21:13:35,763 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750 [2020-07-20 21:13:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:13:35,765 INFO L225 Difference]: With dead ends: 131 [2020-07-20 21:13:35,765 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:13:35,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1301 SyntacticMatches, 164 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3509 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 21:13:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:13:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:13:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:13:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:13:35,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750 [2020-07-20 21:13:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:13:35,769 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:13:35,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 21:13:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:13:35,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:13:35,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:13:35,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:13:37,463 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 8 [2020-07-20 21:13:37,578 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 1 [2020-07-20 21:13:40,175 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 123 DAG size of output: 44 [2020-07-20 21:13:40,181 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-07-20 21:13:40,181 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-07-20 21:13:40,182 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 |fibonacci_#in~n|) (<= fibonacci_~n |fibonacci_#in~n|)) [2020-07-20 21:13:40,182 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-20 21:13:40,182 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6)) (not (<= 5 |fibonacci_#in~n|)) (and (<= 8 |fibonacci_#t~ret0|) (<= fibonacci_~n 7)) (and (<= |fibonacci_#in~n| 5) (<= 3 |fibonacci_#t~ret0|)) (and (< |fibonacci_#in~n| 9) (<= 13 |fibonacci_#t~ret0|)) (<= 21 |fibonacci_#t~ret0|)) (let ((.cse2 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse1 (<= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= 2 |fibonacci_#t~ret0|) (<= 4 |fibonacci_#in~n|) .cse1) (and .cse2 .cse0 (<= 2 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 2) .cse1) (and (<= 3 |fibonacci_#in~n|) .cse2 .cse0 (<= |fibonacci_#in~n| 3) .cse1)))) [2020-07-20 21:13:40,182 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-07-20 21:13:40,182 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-20 21:13:40,182 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-07-20 21:13:40,182 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-07-20 21:13:40,183 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 21:13:40,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:13:40,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:13:40,183 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:13:40,183 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:13:40,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:13:40,183 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-07-20 21:13:40,184 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-07-20 21:13:40,184 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-07-20 21:13:40,184 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-07-20 21:13:40,184 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-07-20 21:13:40,184 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-07-20 21:13:40,184 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-07-20 21:13:40,184 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-07-20 21:13:40,185 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 21:13:40,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:13:40 BoogieIcfgContainer [2020-07-20 21:13:40,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:13:40,192 INFO L168 Benchmark]: Toolchain (without parser) took 215968.34 ms. Allocated memory was 138.9 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 102.5 MB in the beginning and 196.8 MB in the end (delta: -94.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,193 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.51 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,193 INFO L168 Benchmark]: Boogie Preprocessor took 42.53 ms. Allocated memory is still 138.9 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,193 INFO L168 Benchmark]: RCFGBuilder took 459.75 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.3 MB in the beginning and 170.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,194 INFO L168 Benchmark]: TraceAbstraction took 215164.63 ms. Allocated memory was 203.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 170.8 MB in the beginning and 196.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-07-20 21:13:40,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.51 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.53 ms. Allocated memory is still 138.9 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.75 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.3 MB in the beginning and 170.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215164.63 ms. Allocated memory was 203.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 170.8 MB in the beginning and 196.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 210.8s, OverallIterations: 11, TraceHistogramMax: 263, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 1295 SDslu, 1571 SDs, 0 SdLazy, 2051 SolverSat, 2286 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12354 GetRequests, 11773 SyntacticMatches, 282 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6117 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 151 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 194 PreInvPairs, 314 NumberOfFragments, 99 HoareAnnotationTreeSize, 194 FomulaSimplifications, 7646 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2607 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 198.4s InterpolantComputationTime, 6140 NumberOfCodeBlocks, 4795 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 12231 ConstructedInterpolants, 0 QuantifiedInterpolants, 17706495 SizeOfPredicates, 80 NumberOfNonLiveVariables, 11788 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 781638/845750 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...