/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-patterns/array26_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:02:42,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:02:42,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:02:42,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:02:42,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:02:42,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:02:42,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:02:42,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:02:42,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:02:42,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:02:42,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:02:42,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:02:42,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:02:42,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:02:42,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:02:42,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:02:42,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:02:42,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:02:42,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:02:42,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:02:42,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:02:42,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:02:42,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:02:42,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:02:42,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:02:42,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:02:42,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:02:42,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:02:42,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:02:42,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:02:42,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:02:42,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:02:42,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:02:42,370 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:02:42,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:02:42,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:02:42,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:02:42,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:02:42,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:02:42,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:02:42,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:02:42,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:02:42,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:02:42,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:02:42,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:02:42,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:02:42,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:02:42,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:02:42,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:02:42,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:02:42,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:02:42,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:02:42,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:02:42,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:02:42,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:02:42,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:02:42,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:02:42,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:02:42,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:02:42,842 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:02:42,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array26_pattern.c [2020-12-23 01:02:42,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c57d69ebd/a51e7992c9df44208c2481fd6f4a86bb/FLAGbdb933e05 [2020-12-23 01:02:43,506 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:02:43,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array26_pattern.c [2020-12-23 01:02:43,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c57d69ebd/a51e7992c9df44208c2481fd6f4a86bb/FLAGbdb933e05 [2020-12-23 01:02:43,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c57d69ebd/a51e7992c9df44208c2481fd6f4a86bb [2020-12-23 01:02:43,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:02:43,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:02:43,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:02:43,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:02:43,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:02:43,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:02:43" (1/1) ... [2020-12-23 01:02:43,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5a2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:43, skipping insertion in model container [2020-12-23 01:02:43,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:02:43" (1/1) ... [2020-12-23 01:02:43,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:02:43,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:02:44,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array26_pattern.c[1324,1337] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 01:02:44,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:02:44,106 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:02:44,123 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array26_pattern.c[1324,1337] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 01:02:44,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:02:44,181 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:02:44,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44 WrapperNode [2020-12-23 01:02:44,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:02:44,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:02:44,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:02:44,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:02:44,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:02:44,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:02:44,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:02:44,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:02:44,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... [2020-12-23 01:02:44,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:02:44,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:02:44,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:02:44,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:02:44,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:02:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:02:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:02:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:02:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:02:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:02:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:02:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:02:44,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:02:44,837 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 01:02:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:02:44 BoogieIcfgContainer [2020-12-23 01:02:44,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:02:44,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:02:44,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:02:44,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:02:44,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:02:43" (1/3) ... [2020-12-23 01:02:44,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c986ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:02:44, skipping insertion in model container [2020-12-23 01:02:44,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:02:44" (2/3) ... [2020-12-23 01:02:44,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c986ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:02:44, skipping insertion in model container [2020-12-23 01:02:44,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:02:44" (3/3) ... [2020-12-23 01:02:44,882 INFO L111 eAbstractionObserver]: Analyzing ICFG array26_pattern.c [2020-12-23 01:02:44,898 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:02:44,915 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:02:44,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:02:44,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:02:44,967 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:02:44,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:02:44,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:02:44,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:02:44,968 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:02:44,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:02:44,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:02:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-23 01:02:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 01:02:44,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:44,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:44,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash -320975489, now seen corresponding path program 1 times [2020-12-23 01:02:45,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:45,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517915491] [2020-12-23 01:02:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:02:45,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517915491] [2020-12-23 01:02:45,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:02:45,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:02:45,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562879298] [2020-12-23 01:02:45,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:02:45,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:02:45,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:02:45,167 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-23 01:02:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:45,183 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2020-12-23 01:02:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:02:45,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-23 01:02:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:45,193 INFO L225 Difference]: With dead ends: 43 [2020-12-23 01:02:45,193 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 01:02:45,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:02:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 01:02:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-23 01:02:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 01:02:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-12-23 01:02:45,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2020-12-23 01:02:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:45,229 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-12-23 01:02:45,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:02:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-12-23 01:02:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 01:02:45,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:45,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:45,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:02:45,231 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1931938343, now seen corresponding path program 1 times [2020-12-23 01:02:45,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:45,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804268314] [2020-12-23 01:02:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:45,252 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:45,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838675851] [2020-12-23 01:02:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:45,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 01:02:45,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:02:45,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804268314] [2020-12-23 01:02:45,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:45,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838675851] [2020-12-23 01:02:45,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:02:45,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:02:45,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709235276] [2020-12-23 01:02:45,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:02:45,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:02:45,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:02:45,458 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2020-12-23 01:02:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:45,575 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2020-12-23 01:02:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:02:45,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 01:02:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:45,577 INFO L225 Difference]: With dead ends: 44 [2020-12-23 01:02:45,577 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 01:02:45,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:02:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 01:02:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-12-23 01:02:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 01:02:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2020-12-23 01:02:45,593 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2020-12-23 01:02:45,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:45,594 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2020-12-23 01:02:45,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:02:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2020-12-23 01:02:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:02:45,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:45,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:45,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 01:02:45,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:45,802 INFO L82 PathProgramCache]: Analyzing trace with hash -438331433, now seen corresponding path program 1 times [2020-12-23 01:02:45,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:45,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128545030] [2020-12-23 01:02:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:45,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:45,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519188292] [2020-12-23 01:02:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:45,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 01:02:45,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:02:45,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128545030] [2020-12-23 01:02:45,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:45,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519188292] [2020-12-23 01:02:45,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:02:45,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:02:45,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228119534] [2020-12-23 01:02:45,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:02:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:02:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:02:45,950 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 4 states. [2020-12-23 01:02:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:46,026 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2020-12-23 01:02:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:02:46,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 01:02:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:46,027 INFO L225 Difference]: With dead ends: 51 [2020-12-23 01:02:46,028 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 01:02:46,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:02:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 01:02:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-12-23 01:02:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 01:02:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-12-23 01:02:46,043 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2020-12-23 01:02:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:46,044 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-12-23 01:02:46,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:02:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-12-23 01:02:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 01:02:46,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:46,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:46,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:46,251 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash -308201553, now seen corresponding path program 1 times [2020-12-23 01:02:46,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:46,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674872891] [2020-12-23 01:02:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:46,267 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:46,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116963174] [2020-12-23 01:02:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:46,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:02:46,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:02:46,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674872891] [2020-12-23 01:02:46,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:46,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116963174] [2020-12-23 01:02:46,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:46,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 01:02:46,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972826749] [2020-12-23 01:02:46,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 01:02:46,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:46,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 01:02:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:02:46,420 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 6 states. [2020-12-23 01:02:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:46,559 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-12-23 01:02:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 01:02:46,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 01:02:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:46,561 INFO L225 Difference]: With dead ends: 65 [2020-12-23 01:02:46,561 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 01:02:46,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:02:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 01:02:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2020-12-23 01:02:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:02:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-12-23 01:02:46,571 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 21 [2020-12-23 01:02:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:46,572 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-12-23 01:02:46,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 01:02:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-12-23 01:02:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 01:02:46,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:46,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:46,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:46,788 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1610723178, now seen corresponding path program 1 times [2020-12-23 01:02:46,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:46,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078121090] [2020-12-23 01:02:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:46,805 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:46,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43283671] [2020-12-23 01:02:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:46,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:02:46,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 01:02:46,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078121090] [2020-12-23 01:02:46,954 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:46,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43283671] [2020-12-23 01:02:46,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:46,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:02:46,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567079944] [2020-12-23 01:02:46,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:02:46,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:02:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:02:46,957 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-12-23 01:02:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:47,102 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2020-12-23 01:02:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 01:02:47,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-23 01:02:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:47,104 INFO L225 Difference]: With dead ends: 100 [2020-12-23 01:02:47,104 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 01:02:47,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 01:02:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 01:02:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-12-23 01:02:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 01:02:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2020-12-23 01:02:47,116 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 27 [2020-12-23 01:02:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:47,116 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2020-12-23 01:02:47,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:02:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2020-12-23 01:02:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 01:02:47,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:47,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:47,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:47,332 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:47,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:47,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1943339208, now seen corresponding path program 1 times [2020-12-23 01:02:47,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:47,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201934594] [2020-12-23 01:02:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:47,348 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:47,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681257550] [2020-12-23 01:02:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:47,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 01:02:47,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:47,623 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:02:47,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:47,654 INFO L625 ElimStorePlain]: treesize reduction 5, result has 87.2 percent of original size [2020-12-23 01:02:47,656 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:02:47,657 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:34 [2020-12-23 01:02:47,744 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:02:47,745 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 85 [2020-12-23 01:02:47,749 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:47,808 INFO L625 ElimStorePlain]: treesize reduction 26, result has 64.4 percent of original size [2020-12-23 01:02:47,810 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:02:47,810 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2020-12-23 01:02:48,102 INFO L348 Elim1Store]: treesize reduction 25, result has 85.8 percent of original size [2020-12-23 01:02:48,103 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 173 [2020-12-23 01:02:48,113 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:48,176 INFO L625 ElimStorePlain]: treesize reduction 73, result has 48.2 percent of original size [2020-12-23 01:02:48,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:02:48,179 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:68 [2020-12-23 01:02:48,371 INFO L348 Elim1Store]: treesize reduction 118, result has 56.9 percent of original size [2020-12-23 01:02:48,372 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 179 [2020-12-23 01:02:48,379 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:48,434 INFO L625 ElimStorePlain]: treesize reduction 65, result has 52.9 percent of original size [2020-12-23 01:02:48,436 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:02:48,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:73 [2020-12-23 01:02:49,248 INFO L348 Elim1Store]: treesize reduction 27, result has 67.1 percent of original size [2020-12-23 01:02:49,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2020-12-23 01:02:49,253 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:49,266 INFO L625 ElimStorePlain]: treesize reduction 14, result has 41.7 percent of original size [2020-12-23 01:02:49,268 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:02:49,269 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:73, output treesize:3 [2020-12-23 01:02:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:02:49,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201934594] [2020-12-23 01:02:49,337 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:49,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681257550] [2020-12-23 01:02:49,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:49,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-12-23 01:02:49,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526959273] [2020-12-23 01:02:49,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 01:02:49,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:49,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 01:02:49,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:02:49,340 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand 28 states. [2020-12-23 01:02:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:52,168 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2020-12-23 01:02:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 01:02:52,169 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-12-23 01:02:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:52,172 INFO L225 Difference]: With dead ends: 155 [2020-12-23 01:02:52,172 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 01:02:52,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=314, Invalid=2236, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 01:02:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 01:02:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2020-12-23 01:02:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 01:02:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2020-12-23 01:02:52,188 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 45 [2020-12-23 01:02:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:52,189 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2020-12-23 01:02:52,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 01:02:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2020-12-23 01:02:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:02:52,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:52,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:52,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 01:02:52,404 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash 922052314, now seen corresponding path program 2 times [2020-12-23 01:02:52,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:52,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903935053] [2020-12-23 01:02:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:52,418 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:52,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068286182] [2020-12-23 01:02:52,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:52,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:02:52,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:02:52,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 01:02:52,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903935053] [2020-12-23 01:02:52,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:52,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068286182] [2020-12-23 01:02:52,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:52,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:02:52,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703011516] [2020-12-23 01:02:52,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:02:52,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:02:52,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:02:52,602 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 9 states. [2020-12-23 01:02:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:52,837 INFO L93 Difference]: Finished difference Result 229 states and 292 transitions. [2020-12-23 01:02:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:02:52,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-12-23 01:02:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:52,841 INFO L225 Difference]: With dead ends: 229 [2020-12-23 01:02:52,841 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 01:02:52,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:02:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 01:02:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 139. [2020-12-23 01:02:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 01:02:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 173 transitions. [2020-12-23 01:02:52,888 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 173 transitions. Word has length 47 [2020-12-23 01:02:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:52,889 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 173 transitions. [2020-12-23 01:02:52,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:02:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 173 transitions. [2020-12-23 01:02:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 01:02:52,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:52,894 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:53,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:53,111 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash -123168592, now seen corresponding path program 3 times [2020-12-23 01:02:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:53,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313501231] [2020-12-23 01:02:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:53,125 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:53,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350462194] [2020-12-23 01:02:53,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:53,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:02:53,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:53,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:02:53,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 01:02:53,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313501231] [2020-12-23 01:02:53,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:53,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350462194] [2020-12-23 01:02:53,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:53,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:02:53,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137838849] [2020-12-23 01:02:53,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:02:53,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:02:53,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:02:53,453 INFO L87 Difference]: Start difference. First operand 139 states and 173 transitions. Second operand 9 states. [2020-12-23 01:02:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:53,785 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2020-12-23 01:02:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:02:53,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-12-23 01:02:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:53,788 INFO L225 Difference]: With dead ends: 215 [2020-12-23 01:02:53,788 INFO L226 Difference]: Without dead ends: 211 [2020-12-23 01:02:53,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-23 01:02:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-23 01:02:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2020-12-23 01:02:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-23 01:02:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2020-12-23 01:02:53,806 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 48 [2020-12-23 01:02:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:53,807 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2020-12-23 01:02:53,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:02:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2020-12-23 01:02:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 01:02:53,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:53,809 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:54,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:54,024 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash -328109803, now seen corresponding path program 4 times [2020-12-23 01:02:54,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:54,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234777164] [2020-12-23 01:02:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:54,036 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:54,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291783670] [2020-12-23 01:02:54,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:54,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:02:54,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:54,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:02:54,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 01:02:54,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234777164] [2020-12-23 01:02:54,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:54,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291783670] [2020-12-23 01:02:54,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:54,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:02:54,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132401485] [2020-12-23 01:02:54,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:02:54,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:02:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:02:54,244 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand 9 states. [2020-12-23 01:02:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:54,638 INFO L93 Difference]: Finished difference Result 223 states and 266 transitions. [2020-12-23 01:02:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:02:54,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-23 01:02:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:54,639 INFO L225 Difference]: With dead ends: 223 [2020-12-23 01:02:54,639 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 01:02:54,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:02:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 01:02:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2020-12-23 01:02:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 01:02:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2020-12-23 01:02:54,656 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 52 [2020-12-23 01:02:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:54,657 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2020-12-23 01:02:54,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:02:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2020-12-23 01:02:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 01:02:54,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:54,660 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:54,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 01:02:54,876 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash 139447478, now seen corresponding path program 5 times [2020-12-23 01:02:54,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:54,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052140687] [2020-12-23 01:02:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:54,888 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:54,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195912523] [2020-12-23 01:02:54,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:54,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 01:02:54,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:54,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 01:02:54,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 01:02:55,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052140687] [2020-12-23 01:02:55,205 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:55,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195912523] [2020-12-23 01:02:55,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:55,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:02:55,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282625465] [2020-12-23 01:02:55,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:02:55,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:55,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:02:55,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:02:55,207 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand 12 states. [2020-12-23 01:02:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:56,358 INFO L93 Difference]: Finished difference Result 398 states and 526 transitions. [2020-12-23 01:02:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 01:02:56,358 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-12-23 01:02:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:56,360 INFO L225 Difference]: With dead ends: 398 [2020-12-23 01:02:56,361 INFO L226 Difference]: Without dead ends: 305 [2020-12-23 01:02:56,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 01:02:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-12-23 01:02:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 200. [2020-12-23 01:02:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-23 01:02:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 247 transitions. [2020-12-23 01:02:56,384 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 247 transitions. Word has length 59 [2020-12-23 01:02:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:56,384 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 247 transitions. [2020-12-23 01:02:56,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:02:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 247 transitions. [2020-12-23 01:02:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 01:02:56,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:56,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:56,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:56,600 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 248155765, now seen corresponding path program 6 times [2020-12-23 01:02:56,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:56,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019834130] [2020-12-23 01:02:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:56,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:56,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779844256] [2020-12-23 01:02:56,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:56,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-23 01:02:56,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:56,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 01:02:56,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:56,848 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:02:56,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:02:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 44 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-23 01:02:57,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019834130] [2020-12-23 01:02:57,056 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:57,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779844256] [2020-12-23 01:02:57,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:57,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:02:57,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906166610] [2020-12-23 01:02:57,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:02:57,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:57,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:02:57,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:02:57,058 INFO L87 Difference]: Start difference. First operand 200 states and 247 transitions. Second operand 12 states. [2020-12-23 01:02:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:57,615 INFO L93 Difference]: Finished difference Result 506 states and 634 transitions. [2020-12-23 01:02:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:02:57,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-12-23 01:02:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:57,617 INFO L225 Difference]: With dead ends: 506 [2020-12-23 01:02:57,618 INFO L226 Difference]: Without dead ends: 303 [2020-12-23 01:02:57,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:02:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-23 01:02:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 276. [2020-12-23 01:02:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-23 01:02:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 349 transitions. [2020-12-23 01:02:57,643 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 349 transitions. Word has length 60 [2020-12-23 01:02:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 349 transitions. [2020-12-23 01:02:57,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:02:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 349 transitions. [2020-12-23 01:02:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 01:02:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:57,645 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:57,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:57,860 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:57,862 INFO L82 PathProgramCache]: Analyzing trace with hash 801857036, now seen corresponding path program 7 times [2020-12-23 01:02:57,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:57,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15450798] [2020-12-23 01:02:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:57,874 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:57,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531171407] [2020-12-23 01:02:57,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:02:57,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:02:57,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 44 proven. 53 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-23 01:02:58,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15450798] [2020-12-23 01:02:58,075 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:58,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531171407] [2020-12-23 01:02:58,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:58,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 01:02:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903332975] [2020-12-23 01:02:58,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 01:02:58,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 01:02:58,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:02:58,077 INFO L87 Difference]: Start difference. First operand 276 states and 349 transitions. Second operand 11 states. [2020-12-23 01:02:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:58,379 INFO L93 Difference]: Finished difference Result 854 states and 1076 transitions. [2020-12-23 01:02:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:02:58,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-12-23 01:02:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:58,383 INFO L225 Difference]: With dead ends: 854 [2020-12-23 01:02:58,383 INFO L226 Difference]: Without dead ends: 618 [2020-12-23 01:02:58,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-12-23 01:02:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-12-23 01:02:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 492. [2020-12-23 01:02:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-12-23 01:02:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 611 transitions. [2020-12-23 01:02:58,438 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 611 transitions. Word has length 64 [2020-12-23 01:02:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:58,439 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 611 transitions. [2020-12-23 01:02:58,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 01:02:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 611 transitions. [2020-12-23 01:02:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 01:02:58,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:58,462 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:58,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 01:02:58,676 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1026138516, now seen corresponding path program 8 times [2020-12-23 01:02:58,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:58,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062757028] [2020-12-23 01:02:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:58,687 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:58,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998848650] [2020-12-23 01:02:58,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:58,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:02:58,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:58,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 01:02:58,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-23 01:02:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062757028] [2020-12-23 01:02:58,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998848650] [2020-12-23 01:02:58,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:02:58,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 01:02:58,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091089233] [2020-12-23 01:02:58,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:02:58,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:02:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:02:58,893 INFO L87 Difference]: Start difference. First operand 492 states and 611 transitions. Second operand 10 states. [2020-12-23 01:02:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:02:59,146 INFO L93 Difference]: Finished difference Result 748 states and 917 transitions. [2020-12-23 01:02:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:02:59,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-12-23 01:02:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:02:59,151 INFO L225 Difference]: With dead ends: 748 [2020-12-23 01:02:59,151 INFO L226 Difference]: Without dead ends: 664 [2020-12-23 01:02:59,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:02:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-12-23 01:02:59,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 480. [2020-12-23 01:02:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-12-23 01:02:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 594 transitions. [2020-12-23 01:02:59,198 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 594 transitions. Word has length 67 [2020-12-23 01:02:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:02:59,198 INFO L481 AbstractCegarLoop]: Abstraction has 480 states and 594 transitions. [2020-12-23 01:02:59,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:02:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 594 transitions. [2020-12-23 01:02:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 01:02:59,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:02:59,200 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:02:59,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 01:02:59,414 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:02:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:02:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -10882076, now seen corresponding path program 9 times [2020-12-23 01:02:59,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:02:59,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557920703] [2020-12-23 01:02:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:02:59,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:02:59,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638377707] [2020-12-23 01:02:59,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:02:59,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 01:02:59,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:02:59,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 01:02:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:02:59,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:02:59,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:02:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-12-23 01:02:59,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557920703] [2020-12-23 01:02:59,917 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:02:59,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638377707] [2020-12-23 01:02:59,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:02:59,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 01:02:59,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301284524] [2020-12-23 01:02:59,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:02:59,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:02:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:02:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:02:59,919 INFO L87 Difference]: Start difference. First operand 480 states and 594 transitions. Second operand 12 states. [2020-12-23 01:03:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:00,655 INFO L93 Difference]: Finished difference Result 1274 states and 1600 transitions. [2020-12-23 01:03:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 01:03:00,656 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-12-23 01:03:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:00,660 INFO L225 Difference]: With dead ends: 1274 [2020-12-23 01:03:00,661 INFO L226 Difference]: Without dead ends: 860 [2020-12-23 01:03:00,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:03:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2020-12-23 01:03:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 571. [2020-12-23 01:03:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-23 01:03:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 706 transitions. [2020-12-23 01:03:00,723 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 706 transitions. Word has length 74 [2020-12-23 01:03:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:00,723 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 706 transitions. [2020-12-23 01:03:00,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:03:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 706 transitions. [2020-12-23 01:03:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 01:03:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:00,725 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:00,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:03:00,939 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:00,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1654572962, now seen corresponding path program 10 times [2020-12-23 01:03:00,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:00,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386849327] [2020-12-23 01:03:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:00,950 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:00,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276071099] [2020-12-23 01:03:00,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:01,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:03:01,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:01,396 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 102 conjunts are in the unsatisfiable core [2020-12-23 01:03:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:01,446 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:03:01,446 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:01,462 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,463 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:03:01,568 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:01,569 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 85 [2020-12-23 01:03:01,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,621 INFO L625 ElimStorePlain]: treesize reduction 26, result has 65.8 percent of original size [2020-12-23 01:03:01,622 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2020-12-23 01:03:01,800 INFO L348 Elim1Store]: treesize reduction 88, result has 48.5 percent of original size [2020-12-23 01:03:01,800 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 105 [2020-12-23 01:03:01,803 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,862 INFO L625 ElimStorePlain]: treesize reduction 36, result has 65.7 percent of original size [2020-12-23 01:03:01,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:01,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:83, output treesize:69 [2020-12-23 01:03:02,235 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-23 01:03:02,236 INFO L348 Elim1Store]: treesize reduction 76, result has 75.0 percent of original size [2020-12-23 01:03:02,237 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 253 [2020-12-23 01:03:02,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:02,335 INFO L625 ElimStorePlain]: treesize reduction 110, result has 44.7 percent of original size [2020-12-23 01:03:02,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:02,340 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2020-12-23 01:03:02,636 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-12-23 01:03:02,637 INFO L348 Elim1Store]: treesize reduction 222, result has 53.1 percent of original size [2020-12-23 01:03:02,637 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 281 [2020-12-23 01:03:02,644 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:02,739 INFO L625 ElimStorePlain]: treesize reduction 116, result has 48.4 percent of original size [2020-12-23 01:03:02,740 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:02,741 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:109 [2020-12-23 01:03:03,115 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2020-12-23 01:03:03,116 INFO L348 Elim1Store]: treesize reduction 335, result has 42.0 percent of original size [2020-12-23 01:03:03,117 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 274 [2020-12-23 01:03:03,129 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:03,223 INFO L625 ElimStorePlain]: treesize reduction 94, result has 54.8 percent of original size [2020-12-23 01:03:03,224 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:03,225 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:114 [2020-12-23 01:03:21,103 WARN L197 SmtUtils]: Spent 17.59 s on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2020-12-23 01:03:21,105 INFO L348 Elim1Store]: treesize reduction 152, result has 82.2 percent of original size [2020-12-23 01:03:21,105 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 246 treesize of output 749 [2020-12-23 01:03:21,119 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:21,289 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2020-12-23 01:03:21,290 INFO L625 ElimStorePlain]: treesize reduction 258, result has 34.0 percent of original size [2020-12-23 01:03:21,292 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:21,292 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:261, output treesize:133 [2020-12-23 01:03:22,261 WARN L197 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2020-12-23 01:03:22,262 INFO L348 Elim1Store]: treesize reduction 376, result has 65.1 percent of original size [2020-12-23 01:03:22,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 741 [2020-12-23 01:03:22,273 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:22,486 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-12-23 01:03:22,493 INFO L625 ElimStorePlain]: treesize reduction 246, result has 37.9 percent of original size [2020-12-23 01:03:22,496 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:22,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:154, output treesize:150 [2020-12-23 01:03:23,212 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 70 [2020-12-23 01:03:23,213 INFO L348 Elim1Store]: treesize reduction 534, result has 32.1 percent of original size [2020-12-23 01:03:23,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 104 treesize of output 292 [2020-12-23 01:03:23,221 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:23,334 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-23 01:03:23,335 INFO L625 ElimStorePlain]: treesize reduction 77, result has 58.6 percent of original size [2020-12-23 01:03:23,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:23,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:109 [2020-12-23 01:03:27,215 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 96 [2020-12-23 01:03:27,216 INFO L348 Elim1Store]: treesize reduction 263, result has 51.7 percent of original size [2020-12-23 01:03:27,216 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 320 [2020-12-23 01:03:27,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:27,247 INFO L625 ElimStorePlain]: treesize reduction 32, result has 23.8 percent of original size [2020-12-23 01:03:27,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:27,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:148, output treesize:3 [2020-12-23 01:03:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:03:27,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386849327] [2020-12-23 01:03:27,559 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:27,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276071099] [2020-12-23 01:03:27,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:27,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-12-23 01:03:27,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40962663] [2020-12-23 01:03:27,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-23 01:03:27,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-23 01:03:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 01:03:27,561 INFO L87 Difference]: Start difference. First operand 571 states and 706 transitions. Second operand 45 states. [2020-12-23 01:03:28,903 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-12-23 01:03:31,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:31,203 INFO L93 Difference]: Finished difference Result 1064 states and 1301 transitions. [2020-12-23 01:03:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-23 01:03:31,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 78 [2020-12-23 01:03:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:31,207 INFO L225 Difference]: With dead ends: 1064 [2020-12-23 01:03:31,207 INFO L226 Difference]: Without dead ends: 634 [2020-12-23 01:03:31,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 01:03:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-12-23 01:03:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 600. [2020-12-23 01:03:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-12-23 01:03:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 734 transitions. [2020-12-23 01:03:31,283 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 734 transitions. Word has length 78 [2020-12-23 01:03:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:31,284 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 734 transitions. [2020-12-23 01:03:31,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-23 01:03:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 734 transitions. [2020-12-23 01:03:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 01:03:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:31,286 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 6, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:31,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:31,500 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1739756283, now seen corresponding path program 11 times [2020-12-23 01:03:31,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:31,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145558785] [2020-12-23 01:03:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:31,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:31,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732015206] [2020-12-23 01:03:31,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:31,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 01:03:31,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:31,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 01:03:31,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 156 proven. 49 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-12-23 01:03:31,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145558785] [2020-12-23 01:03:31,926 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:31,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732015206] [2020-12-23 01:03:31,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:31,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:03:31,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386352148] [2020-12-23 01:03:31,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:03:31,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:31,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:03:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:03:31,928 INFO L87 Difference]: Start difference. First operand 600 states and 734 transitions. Second operand 12 states. [2020-12-23 01:03:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:33,459 INFO L93 Difference]: Finished difference Result 1303 states and 1598 transitions. [2020-12-23 01:03:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 01:03:33,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-12-23 01:03:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:33,463 INFO L225 Difference]: With dead ends: 1303 [2020-12-23 01:03:33,463 INFO L226 Difference]: Without dead ends: 774 [2020-12-23 01:03:33,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-12-23 01:03:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-12-23 01:03:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 553. [2020-12-23 01:03:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-23 01:03:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 636 transitions. [2020-12-23 01:03:33,525 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 636 transitions. Word has length 82 [2020-12-23 01:03:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:33,525 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 636 transitions. [2020-12-23 01:03:33,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:03:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 636 transitions. [2020-12-23 01:03:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 01:03:33,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:33,527 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 8, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:33,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:03:33,742 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1382474117, now seen corresponding path program 12 times [2020-12-23 01:03:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:33,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954260252] [2020-12-23 01:03:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:33,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:33,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534991366] [2020-12-23 01:03:33,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:34,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-23 01:03:34,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:34,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:03:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 12 proven. 211 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-23 01:03:34,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954260252] [2020-12-23 01:03:34,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:34,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534991366] [2020-12-23 01:03:34,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:34,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 01:03:34,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714737190] [2020-12-23 01:03:34,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 01:03:34,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 01:03:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:03:34,233 INFO L87 Difference]: Start difference. First operand 553 states and 636 transitions. Second operand 11 states. [2020-12-23 01:03:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:34,599 INFO L93 Difference]: Finished difference Result 1144 states and 1315 transitions. [2020-12-23 01:03:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 01:03:34,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-12-23 01:03:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:34,604 INFO L225 Difference]: With dead ends: 1144 [2020-12-23 01:03:34,604 INFO L226 Difference]: Without dead ends: 990 [2020-12-23 01:03:34,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:03:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-12-23 01:03:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 762. [2020-12-23 01:03:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-12-23 01:03:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 877 transitions. [2020-12-23 01:03:34,697 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 877 transitions. Word has length 84 [2020-12-23 01:03:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:34,697 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 877 transitions. [2020-12-23 01:03:34,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 01:03:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 877 transitions. [2020-12-23 01:03:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 01:03:34,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:34,699 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:34,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 01:03:34,914 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:34,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:34,916 INFO L82 PathProgramCache]: Analyzing trace with hash -518200243, now seen corresponding path program 13 times [2020-12-23 01:03:34,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:34,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015904676] [2020-12-23 01:03:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:34,926 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:34,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226130406] [2020-12-23 01:03:34,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:03:35,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:03:35,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 169 proven. 84 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-23 01:03:35,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015904676] [2020-12-23 01:03:35,202 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:35,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226130406] [2020-12-23 01:03:35,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:35,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 01:03:35,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734881657] [2020-12-23 01:03:35,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 01:03:35,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 01:03:35,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:03:35,203 INFO L87 Difference]: Start difference. First operand 762 states and 877 transitions. Second operand 11 states. [2020-12-23 01:03:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:36,003 INFO L93 Difference]: Finished difference Result 1075 states and 1206 transitions. [2020-12-23 01:03:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 01:03:36,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-12-23 01:03:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:36,009 INFO L225 Difference]: With dead ends: 1075 [2020-12-23 01:03:36,009 INFO L226 Difference]: Without dead ends: 858 [2020-12-23 01:03:36,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=285, Invalid=585, Unknown=0, NotChecked=0, Total=870 [2020-12-23 01:03:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-12-23 01:03:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 747. [2020-12-23 01:03:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-12-23 01:03:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 859 transitions. [2020-12-23 01:03:36,105 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 859 transitions. Word has length 87 [2020-12-23 01:03:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:36,106 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 859 transitions. [2020-12-23 01:03:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 01:03:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 859 transitions. [2020-12-23 01:03:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-23 01:03:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:36,112 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 7, 5, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:36,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:03:36,328 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash -620369941, now seen corresponding path program 14 times [2020-12-23 01:03:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:36,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657956190] [2020-12-23 01:03:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:36,339 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:36,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468917006] [2020-12-23 01:03:36,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:36,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:03:36,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:36,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 01:03:36,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 239 proven. 78 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-12-23 01:03:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657956190] [2020-12-23 01:03:36,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468917006] [2020-12-23 01:03:36,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:36,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:03:36,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271416524] [2020-12-23 01:03:36,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:03:36,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:03:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:03:36,654 INFO L87 Difference]: Start difference. First operand 747 states and 859 transitions. Second operand 12 states. [2020-12-23 01:03:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:37,131 INFO L93 Difference]: Finished difference Result 1034 states and 1180 transitions. [2020-12-23 01:03:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:03:37,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-12-23 01:03:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:37,136 INFO L225 Difference]: With dead ends: 1034 [2020-12-23 01:03:37,136 INFO L226 Difference]: Without dead ends: 870 [2020-12-23 01:03:37,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-23 01:03:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-12-23 01:03:37,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 699. [2020-12-23 01:03:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-12-23 01:03:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 808 transitions. [2020-12-23 01:03:37,207 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 808 transitions. Word has length 100 [2020-12-23 01:03:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:37,207 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 808 transitions. [2020-12-23 01:03:37,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:03:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 808 transitions. [2020-12-23 01:03:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-23 01:03:37,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:37,209 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 8, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:37,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:37,423 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1777378164, now seen corresponding path program 15 times [2020-12-23 01:03:37,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:37,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700795095] [2020-12-23 01:03:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:37,433 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:37,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552709113] [2020-12-23 01:03:37,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:37,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:03:37,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:37,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:03:37,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 177 proven. 11 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-12-23 01:03:37,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700795095] [2020-12-23 01:03:37,856 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:37,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552709113] [2020-12-23 01:03:37,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:37,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:03:37,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817435274] [2020-12-23 01:03:37,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:03:37,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:03:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:03:37,857 INFO L87 Difference]: Start difference. First operand 699 states and 808 transitions. Second operand 9 states. [2020-12-23 01:03:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:38,438 INFO L93 Difference]: Finished difference Result 1535 states and 1778 transitions. [2020-12-23 01:03:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:03:38,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-12-23 01:03:38,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:38,447 INFO L225 Difference]: With dead ends: 1535 [2020-12-23 01:03:38,447 INFO L226 Difference]: Without dead ends: 1515 [2020-12-23 01:03:38,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:03:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-12-23 01:03:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 699. [2020-12-23 01:03:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-12-23 01:03:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 808 transitions. [2020-12-23 01:03:38,535 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 808 transitions. Word has length 103 [2020-12-23 01:03:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:38,535 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 808 transitions. [2020-12-23 01:03:38,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:03:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 808 transitions. [2020-12-23 01:03:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-23 01:03:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:38,538 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 10, 6, 6, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:38,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:38,751 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:38,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1666115448, now seen corresponding path program 16 times [2020-12-23 01:03:38,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:38,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262546053] [2020-12-23 01:03:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:38,767 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:38,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103673425] [2020-12-23 01:03:38,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:38,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:03:38,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 01:03:38,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 45 proven. 157 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-12-23 01:03:39,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262546053] [2020-12-23 01:03:39,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:03:39,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103673425] [2020-12-23 01:03:39,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:03:39,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 01:03:39,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798401816] [2020-12-23 01:03:39,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:03:39,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:03:39,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:03:39,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:03:39,065 INFO L87 Difference]: Start difference. First operand 699 states and 808 transitions. Second operand 10 states. [2020-12-23 01:03:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:03:39,388 INFO L93 Difference]: Finished difference Result 712 states and 820 transitions. [2020-12-23 01:03:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:03:39,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-12-23 01:03:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:03:39,393 INFO L225 Difference]: With dead ends: 712 [2020-12-23 01:03:39,393 INFO L226 Difference]: Without dead ends: 692 [2020-12-23 01:03:39,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-23 01:03:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-12-23 01:03:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 500. [2020-12-23 01:03:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-12-23 01:03:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 576 transitions. [2020-12-23 01:03:39,448 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 576 transitions. Word has length 103 [2020-12-23 01:03:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:03:39,449 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 576 transitions. [2020-12-23 01:03:39,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:03:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 576 transitions. [2020-12-23 01:03:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-23 01:03:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:03:39,451 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:03:39,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 01:03:39,665 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:03:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:03:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1412527961, now seen corresponding path program 17 times [2020-12-23 01:03:39,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:03:39,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076892789] [2020-12-23 01:03:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:03:39,679 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:03:39,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687082232] [2020-12-23 01:03:39,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:03:46,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-12-23 01:03:46,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:03:46,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 163 conjunts are in the unsatisfiable core [2020-12-23 01:03:46,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:03:46,117 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:03:46,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:46,138 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,138 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:03:46,223 INFO L348 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2020-12-23 01:03:46,223 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2020-12-23 01:03:46,225 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,249 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:46,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2020-12-23 01:03:46,376 INFO L348 Elim1Store]: treesize reduction 156, result has 18.3 percent of original size [2020-12-23 01:03:46,376 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 57 [2020-12-23 01:03:46,377 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:46,408 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,408 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2020-12-23 01:03:46,661 INFO L348 Elim1Store]: treesize reduction 276, result has 15.9 percent of original size [2020-12-23 01:03:46,661 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 77 [2020-12-23 01:03:46,666 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:46,706 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:03:46,706 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:90 [2020-12-23 01:03:47,270 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-12-23 01:03:47,271 INFO L348 Elim1Store]: treesize reduction 105, result has 69.7 percent of original size [2020-12-23 01:03:47,271 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 269 [2020-12-23 01:03:47,277 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:47,447 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-12-23 01:03:47,448 INFO L625 ElimStorePlain]: treesize reduction 139, result has 47.1 percent of original size [2020-12-23 01:03:47,451 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,455 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:03:47,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:98, output treesize:124 [2020-12-23 01:03:47,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,459 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,553 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,554 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:47,904 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-23 01:03:47,949 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:03:47,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:47,985 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:03:48,022 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2020-12-23 01:03:48,025 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,211 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:48,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 231 [2020-12-23 01:03:48,218 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:48,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:48,245 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:03:48,253 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2020-12-23 01:03:48,256 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:48,806 WARN L197 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2020-12-23 01:03:48,807 INFO L625 ElimStorePlain]: treesize reduction 170, result has 66.1 percent of original size [2020-12-23 01:03:48,814 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 4 xjuncts. [2020-12-23 01:03:48,814 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:408, output treesize:332 [2020-12-23 01:03:49,147 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:03:49,537 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:03:49,576 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:03:49,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,618 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:03:49,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2020-12-23 01:03:49,654 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 89 [2020-12-23 01:03:49,729 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:49,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:49,864 INFO L244 Elim1Store]: Index analysis took 124 ms [2020-12-23 01:03:49,954 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:49,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 295 [2020-12-23 01:03:49,960 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:49,972 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:03:49,972 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:50,618 WARN L197 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-12-23 01:03:50,619 INFO L625 ElimStorePlain]: treesize reduction 185, result has 68.4 percent of original size [2020-12-23 01:03:50,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:50,626 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 4 xjuncts. [2020-12-23 01:03:50,626 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:415, output treesize:400 [2020-12-23 01:03:50,629 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:51,097 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-23 01:03:51,115 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:03:52,013 WARN L197 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-12-23 01:03:52,414 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2020-12-23 01:03:53,162 WARN L197 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 90 [2020-12-23 01:03:53,162 INFO L348 Elim1Store]: treesize reduction 495, result has 46.2 percent of original size [2020-12-23 01:03:53,163 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 121 treesize of output 468 [2020-12-23 01:03:53,175 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:53,530 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2020-12-23 01:03:53,531 INFO L625 ElimStorePlain]: treesize reduction 241, result has 40.5 percent of original size [2020-12-23 01:03:53,534 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:03:53,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:176, output treesize:164 [2020-12-23 01:03:53,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:03:54,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:03:54,373 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-12-23 01:03:56,657 WARN L197 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 210 DAG size of output: 162 [2020-12-23 01:03:56,657 INFO L348 Elim1Store]: treesize reduction 258, result has 77.8 percent of original size [2020-12-23 01:03:56,658 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 143 treesize of output 957 [2020-12-23 01:03:56,676 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:57,180 WARN L197 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2020-12-23 01:03:57,181 INFO L625 ElimStorePlain]: treesize reduction 515, result has 27.0 percent of original size [2020-12-23 01:03:57,184 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:03:57,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:199, output treesize:190 [2020-12-23 01:03:57,577 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:03:57,961 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:03:57,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:03:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:03:58,180 INFO L244 Elim1Store]: Index analysis took 172 ms [2020-12-23 01:03:58,200 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 183 [2020-12-23 01:03:58,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:58,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:03:58,213 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:03:58,353 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-23 01:03:58,353 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:03:58,356 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:03:58,356 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:231, output treesize:223 [2020-12-23 01:03:58,718 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-23 01:03:59,092 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-23 01:04:01,079 WARN L197 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 296 DAG size of output: 170 [2020-12-23 01:04:01,083 INFO L348 Elim1Store]: treesize reduction 814, result has 53.6 percent of original size [2020-12-23 01:04:01,084 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 1005 [2020-12-23 01:04:01,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:01,790 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 84 [2020-12-23 01:04:01,790 INFO L625 ElimStorePlain]: treesize reduction 525, result has 30.8 percent of original size [2020-12-23 01:04:01,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:01,793 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:243, output treesize:234 [2020-12-23 01:04:02,279 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 01:04:02,767 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 01:04:02,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:04:02,808 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:04:02,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:02,967 INFO L244 Elim1Store]: Index analysis took 151 ms [2020-12-23 01:04:02,995 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 219 [2020-12-23 01:04:03,000 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:03,229 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-23 01:04:03,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:03,231 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:03,232 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:260, output treesize:252 [2020-12-23 01:04:09,747 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-23 01:04:16,214 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-23 01:04:16,901 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-12-23 01:04:16,936 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:04:16,974 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:16,975 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 105 [2020-12-23 01:04:16,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:16,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:16,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:16,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:16,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:16,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:17,168 INFO L244 Elim1Store]: Index analysis took 177 ms [2020-12-23 01:04:17,303 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 01:04:17,304 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:17,304 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 68 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 502 [2020-12-23 01:04:17,316 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:17,883 WARN L197 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 95 [2020-12-23 01:04:17,884 INFO L625 ElimStorePlain]: treesize reduction 353, result has 45.6 percent of original size [2020-12-23 01:04:17,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:17,887 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:304, output treesize:296 [2020-12-23 01:04:18,609 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-12-23 01:04:19,202 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-23 01:04:25,453 WARN L197 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 457 DAG size of output: 332 [2020-12-23 01:04:25,454 INFO L348 Elim1Store]: treesize reduction 782, result has 71.7 percent of original size [2020-12-23 01:04:25,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 219 treesize of output 2049 [2020-12-23 01:04:25,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:26,193 WARN L197 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 88 [2020-12-23 01:04:26,194 INFO L625 ElimStorePlain]: treesize reduction 783, result has 23.8 percent of original size [2020-12-23 01:04:26,196 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:26,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:248, output treesize:244 [2020-12-23 01:04:26,676 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 01:04:27,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:04:27,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:27,675 INFO L244 Elim1Store]: Index analysis took 463 ms [2020-12-23 01:04:27,820 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:27,821 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 95 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 10 case distinctions, treesize of input 236 treesize of output 496 [2020-12-23 01:04:27,829 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:27,839 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2020-12-23 01:04:27,840 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:28,166 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2020-12-23 01:04:28,167 INFO L625 ElimStorePlain]: treesize reduction 134, result has 67.5 percent of original size [2020-12-23 01:04:28,169 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:28,170 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:286, output treesize:278 [2020-12-23 01:04:28,687 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-23 01:04:29,202 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-23 01:04:29,230 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 17, 1] term [2020-12-23 01:04:29,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:04:29,242 INFO L443 ElimStorePlain]: Different costs {2=[v_prenex_3], 240=[|v_#memory_int_37|]} [2020-12-23 01:04:29,271 INFO L348 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2020-12-23 01:04:29,271 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2020-12-23 01:04:29,273 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:29,723 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 01:04:29,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:04:30,054 INFO L244 Elim1Store]: Index analysis took 317 ms [2020-12-23 01:04:30,162 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-23 01:04:30,163 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:04:30,163 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 110 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 10 case distinctions, treesize of input 308 treesize of output 502 [2020-12-23 01:04:30,173 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:04:30,547 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2020-12-23 01:04:30,548 INFO L625 ElimStorePlain]: treesize reduction 175, result has 66.4 percent of original size [2020-12-23 01:04:30,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-12-23 01:04:30,551 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:364, output treesize:346 [2020-12-23 01:05:02,844 WARN L197 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 104 DAG size of output: 21 [2020-12-23 01:06:10,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:06:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 6 proven. 822 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 01:06:10,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076892789] [2020-12-23 01:06:10,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:06:10,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687082232] [2020-12-23 01:06:10,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:06:10,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-12-23 01:06:10,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840478993] [2020-12-23 01:06:10,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-23 01:06:10,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:06:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-23 01:06:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3939, Unknown=36, NotChecked=0, Total=4160 [2020-12-23 01:06:10,758 INFO L87 Difference]: Start difference. First operand 500 states and 576 transitions. Second operand 65 states. [2020-12-23 01:06:48,520 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51