/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-fpi/brs3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:15:15,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:15:15,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:15:15,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:15:15,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:15:15,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:15:15,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:15:15,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:15:15,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:15:15,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:15:15,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:15:15,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:15:15,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:15:15,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:15:15,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:15:15,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:15:15,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:15:15,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:15:15,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:15:15,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:15:15,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:15:15,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:15:15,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:15:15,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:15:15,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:15:15,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:15:15,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:15:15,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:15:15,733 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 01:15:15,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:15:15,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:15:15,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:15:15,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:15:15,795 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:15:15,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:15:15,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:15:15,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:15:15,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:15:15,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:15:15,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:15:15,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:15:15,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:15:15,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:15:15,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:15:15,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:15:15,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:15:15,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:15:15,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:15:15,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:15:15,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:15:15,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:15:15,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:15:15,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:15:15,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:15:15,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:15:16,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:15:16,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:15:16,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:15:16,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:15:16,270 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:15:16,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs3.c [2020-12-23 01:15:16,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e654c2e7/6f6cbc13638a411188a57f97f5b75e25/FLAGcdadc8ba5 [2020-12-23 01:15:17,157 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:15:17,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs3.c [2020-12-23 01:15:17,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e654c2e7/6f6cbc13638a411188a57f97f5b75e25/FLAGcdadc8ba5 [2020-12-23 01:15:17,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e654c2e7/6f6cbc13638a411188a57f97f5b75e25 [2020-12-23 01:15:17,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:15:17,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:15:17,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:15:17,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:15:17,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:15:17,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790fa37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17, skipping insertion in model container [2020-12-23 01:15:17,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:15:17,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:15:17,765 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-fpi/brs3.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] [2020-12-23 01:15:17,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:15:17,803 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:15:17,820 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-fpi/brs3.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] [2020-12-23 01:15:17,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:15:17,850 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:15:17,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17 WrapperNode [2020-12-23 01:15:17,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:15:17,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:15:17,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:15:17,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:15:17,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:15:17,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:15:17,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:15:17,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:15:17,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (1/1) ... [2020-12-23 01:15:17,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:15:17,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:15:17,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:15:17,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:15:17,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (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 01:15:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:15:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:15:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:15:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:15:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:15:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:15:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:15:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:15:18,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:15:18,575 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 01:15:18,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:15:18 BoogieIcfgContainer [2020-12-23 01:15:18,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:15:18,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:15:18,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:15:18,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:15:18,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:15:17" (1/3) ... [2020-12-23 01:15:18,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdea364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:15:18, skipping insertion in model container [2020-12-23 01:15:18,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:17" (2/3) ... [2020-12-23 01:15:18,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdea364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:15:18, skipping insertion in model container [2020-12-23 01:15:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:15:18" (3/3) ... [2020-12-23 01:15:18,605 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3.c [2020-12-23 01:15:18,624 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:15:18,631 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:15:18,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:15:18,688 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:15:18,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:15:18,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:15:18,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:15:18,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:15:18,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:15:18,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:15:18,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:15:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 01:15:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:15:18,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:18,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:18,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-12-23 01:15:18,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:18,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300800369] [2020-12-23 01:15:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:18,969 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 01:15:18,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300800369] [2020-12-23 01:15:18,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:18,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:15:18,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491523234] [2020-12-23 01:15:18,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:15:18,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:15:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:15:18,997 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-23 01:15:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:19,017 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2020-12-23 01:15:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:15:19,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:15:19,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:19,028 INFO L225 Difference]: With dead ends: 36 [2020-12-23 01:15:19,029 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 01:15:19,032 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 01:15:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 01:15:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 01:15:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 01:15:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-23 01:15:19,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-12-23 01:15:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:19,069 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-23 01:15:19,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:15:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-23 01:15:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:15:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:19,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:19,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:15:19,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-12-23 01:15:19,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:19,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079375818] [2020-12-23 01:15:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:19,196 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 01:15:19,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079375818] [2020-12-23 01:15:19,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:19,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:15:19,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243045675] [2020-12-23 01:15:19,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:15:19,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:19,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:15:19,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:15:19,203 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-12-23 01:15:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:19,271 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-12-23 01:15:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:15:19,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 01:15:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:19,273 INFO L225 Difference]: With dead ends: 33 [2020-12-23 01:15:19,273 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 01:15:19,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:15:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 01:15:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-23 01:15:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:15:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:15:19,280 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-12-23 01:15:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:19,281 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:15:19,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:15:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:15:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:15:19,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:19,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:19,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:15:19,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-12-23 01:15:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:19,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960713018] [2020-12-23 01:15:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:19,385 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 01:15:19,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960713018] [2020-12-23 01:15:19,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:19,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:15:19,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870622844] [2020-12-23 01:15:19,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:15:19,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:19,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:15:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:15:19,389 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-12-23 01:15:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:19,450 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-23 01:15:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:15:19,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 01:15:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:19,451 INFO L225 Difference]: With dead ends: 27 [2020-12-23 01:15:19,452 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 01:15:19,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:15:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 01:15:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-23 01:15:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 01:15:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-23 01:15:19,458 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-12-23 01:15:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:19,459 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-23 01:15:19,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:15:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-23 01:15:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:15:19,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:19,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:19,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:15:19,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-12-23 01:15:19,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:19,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742180325] [2020-12-23 01:15:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:19,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742180325] [2020-12-23 01:15:19,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469454473] [2020-12-23 01:15:19,607 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 01:15:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:19,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:15:19,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:19,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:19,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 01:15:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610633477] [2020-12-23 01:15:19,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:15:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:15:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:15:19,919 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-12-23 01:15:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:20,066 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-23 01:15:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:15:20,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 01:15:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:20,069 INFO L225 Difference]: With dead ends: 43 [2020-12-23 01:15:20,069 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 01:15:20,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:15:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 01:15:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-12-23 01:15:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 01:15:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-23 01:15:20,087 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-12-23 01:15:20,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:20,087 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-23 01:15:20,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:15:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-23 01:15:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:15:20,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:20,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:20,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:20,306 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-12-23 01:15:20,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:20,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518777726] [2020-12-23 01:15:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:20,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518777726] [2020-12-23 01:15:20,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433756317] [2020-12-23 01:15:20,981 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 01:15:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:21,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 01:15:21,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:21,089 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:21,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:21,099 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,099 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:21,175 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 01:15:21,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:21,185 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,186 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-23 01:15:21,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 01:15:21,287 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,298 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:21,300 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,300 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 01:15:21,454 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-12-23 01:15:21,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:21,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:21,474 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 1 xjuncts. [2020-12-23 01:15:21,475 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:30 [2020-12-23 01:15:21,691 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,730 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,753 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:21,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:21,769 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:21,779 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:21,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:21,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2020-12-23 01:15:21,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753793886] [2020-12-23 01:15:21,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 01:15:21,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 01:15:21,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:15:21,833 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 23 states. [2020-12-23 01:15:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:22,982 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-12-23 01:15:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:15:22,983 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2020-12-23 01:15:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:22,985 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:15:22,985 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 01:15:22,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:15:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 01:15:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-23 01:15:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:15:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-23 01:15:23,002 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2020-12-23 01:15:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:23,003 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-23 01:15:23,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 01:15:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-23 01:15:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:15:23,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:23,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:23,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:23,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2020-12-23 01:15:23,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:23,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557859299] [2020-12-23 01:15:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:23,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557859299] [2020-12-23 01:15:23,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302601174] [2020-12-23 01:15:23,367 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 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 01:15:23,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:15:23,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:23,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:15:23,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:23,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 01:15:23,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281848294] [2020-12-23 01:15:23,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:15:23,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:15:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:15:23,531 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2020-12-23 01:15:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:23,774 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-12-23 01:15:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:15:23,775 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-12-23 01:15:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:23,778 INFO L225 Difference]: With dead ends: 60 [2020-12-23 01:15:23,779 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:15:23,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:15:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:15:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-12-23 01:15:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 01:15:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-23 01:15:23,796 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 26 [2020-12-23 01:15:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:23,799 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-23 01:15:23,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:15:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-23 01:15:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:15:23,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:23,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:24,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:24,013 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1198950171, now seen corresponding path program 3 times [2020-12-23 01:15:24,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:24,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154805419] [2020-12-23 01:15:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:25,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154805419] [2020-12-23 01:15:25,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140139115] [2020-12-23 01:15:25,261 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 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 01:15:25,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 01:15:25,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:25,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 01:15:25,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:25,354 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:25,356 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,361 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:25,362 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,362 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:25,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:25,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,412 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:25,413 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,413 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:15:25,585 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:15:25,591 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:15:25,593 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:25,605 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:15:25,936 INFO L348 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2020-12-23 01:15:25,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2020-12-23 01:15:25,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:25,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:25,959 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 01:15:25,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2020-12-23 01:15:26,175 INFO L348 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2020-12-23 01:15:26,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 86 [2020-12-23 01:15:26,179 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:26,219 INFO L625 ElimStorePlain]: treesize reduction 51, result has 52.8 percent of original size [2020-12-23 01:15:26,221 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 01:15:26,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:57 [2020-12-23 01:15:26,550 INFO L348 Elim1Store]: treesize reduction 17, result has 81.9 percent of original size [2020-12-23 01:15:26,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 138 [2020-12-23 01:15:26,558 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:26,617 INFO L625 ElimStorePlain]: treesize reduction 148, result has 30.5 percent of original size [2020-12-23 01:15:26,626 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 01:15:26,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:80, output treesize:65 [2020-12-23 01:15:26,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:26,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:26,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:26,999 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:27,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:27,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:27,009 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:27,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:27,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:27,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:27,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:15:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:15:27,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:27,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2020-12-23 01:15:27,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456071740] [2020-12-23 01:15:27,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 01:15:27,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:27,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 01:15:27,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 01:15:27,083 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 38 states. [2020-12-23 01:15:48,167 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-12-23 01:15:49,921 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2020-12-23 01:15:51,935 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-12-23 01:15:59,343 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-12-23 01:15:59,529 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-12-23 01:16:01,327 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 01:16:01,709 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-12-23 01:16:01,944 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-12-23 01:16:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:08,532 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-12-23 01:16:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 01:16:08,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 29 [2020-12-23 01:16:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:08,538 INFO L225 Difference]: With dead ends: 98 [2020-12-23 01:16:08,541 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 01:16:08,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=805, Invalid=4738, Unknown=7, NotChecked=0, Total=5550 [2020-12-23 01:16:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 01:16:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 34. [2020-12-23 01:16:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 01:16:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-23 01:16:08,554 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2020-12-23 01:16:08,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:08,554 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-23 01:16:08,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 01:16:08,555 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-23 01:16:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:16:08,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:08,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:08,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:08,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1722173266, now seen corresponding path program 4 times [2020-12-23 01:16:08,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:08,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743522390] [2020-12-23 01:16:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:08,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743522390] [2020-12-23 01:16:08,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849564163] [2020-12-23 01:16:08,882 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 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 01:16:08,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:16:08,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:08,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:16:08,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:09,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:09,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 01:16:09,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198909874] [2020-12-23 01:16:09,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:16:09,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:16:09,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:16:09,121 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 16 states. [2020-12-23 01:16:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:09,371 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-23 01:16:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:16:09,372 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-12-23 01:16:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:09,373 INFO L225 Difference]: With dead ends: 58 [2020-12-23 01:16:09,373 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 01:16:09,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-12-23 01:16:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 01:16:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-12-23 01:16:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 01:16:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-12-23 01:16:09,380 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 32 [2020-12-23 01:16:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:09,381 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-12-23 01:16:09,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:16:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-12-23 01:16:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 01:16:09,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:09,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:09,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:09,583 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:09,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1273910208, now seen corresponding path program 5 times [2020-12-23 01:16:09,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:09,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686824796] [2020-12-23 01:16:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:11,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686824796] [2020-12-23 01:16:11,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550631125] [2020-12-23 01:16:11,442 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 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 01:16:11,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 01:16:11,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:11,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 01:16:11,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:11,532 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:11,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,540 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:11,541 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,541 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:16:11,632 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:11,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:11,642 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 01:16:11,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:11,761 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-23 01:16:11,762 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:11,775 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-23 01:16:11,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:11,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:11,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:11,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2020-12-23 01:16:11,917 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:11,928 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:11,928 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2020-12-23 01:16:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,010 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2020-12-23 01:16:12,012 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:12,027 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2020-12-23 01:16:12,179 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:12,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,185 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 51 [2020-12-23 01:16:12,187 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:12,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:55 [2020-12-23 01:16:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,336 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:12,339 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 51 [2020-12-23 01:16:12,341 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:12,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:47 [2020-12-23 01:16:12,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2020-12-23 01:16:12,594 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:12,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:12,606 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 01:16:12,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:40 [2020-12-23 01:16:12,724 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:12,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,742 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:12,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:12,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:12,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:12,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:12,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 16] total 38 [2020-12-23 01:16:12,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556115892] [2020-12-23 01:16:12,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 01:16:12,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:12,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 01:16:12,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 01:16:12,827 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 38 states. [2020-12-23 01:16:14,050 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-12-23 01:16:15,105 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2020-12-23 01:16:15,329 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-12-23 01:16:15,499 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2020-12-23 01:16:15,694 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 40 [2020-12-23 01:16:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:15,738 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-12-23 01:16:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 01:16:15,739 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 35 [2020-12-23 01:16:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:15,740 INFO L225 Difference]: With dead ends: 68 [2020-12-23 01:16:15,740 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:16:15,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=498, Invalid=3162, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 01:16:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:16:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-23 01:16:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:16:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-23 01:16:15,749 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2020-12-23 01:16:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:15,749 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-23 01:16:15,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 01:16:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-23 01:16:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 01:16:15,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:15,750 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:15,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:15,969 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:15,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1970704919, now seen corresponding path program 6 times [2020-12-23 01:16:15,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:15,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814493646] [2020-12-23 01:16:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814493646] [2020-12-23 01:16:16,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085031994] [2020-12-23 01:16:16,108 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 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 01:16:16,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 01:16:16,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:16,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:16:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:16,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:16,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 01:16:16,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18625404] [2020-12-23 01:16:16,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:16:16,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:16,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:16:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:16:16,356 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 19 states. [2020-12-23 01:16:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:16,601 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-23 01:16:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:16:16,602 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2020-12-23 01:16:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:16,604 INFO L225 Difference]: With dead ends: 67 [2020-12-23 01:16:16,604 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 01:16:16,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-23 01:16:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 01:16:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-12-23 01:16:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 01:16:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-12-23 01:16:16,619 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 38 [2020-12-23 01:16:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:16,623 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-12-23 01:16:16,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:16:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-12-23 01:16:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 01:16:16,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:16,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:16,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 01:16:16,839 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:16,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1332664835, now seen corresponding path program 7 times [2020-12-23 01:16:16,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:16,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646431339] [2020-12-23 01:16:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646431339] [2020-12-23 01:16:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79952942] [2020-12-23 01:16:18,918 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 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 01:16:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 01:16:18,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:18,994 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:18,996 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:19,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:16:19,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:19,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:19,112 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,112 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:16:19,232 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:19,232 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:16:19,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,261 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:16:19,262 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:16:19,455 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:16:19,456 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 69 [2020-12-23 01:16:19,458 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,490 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:16:19,493 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,493 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:16:19,733 INFO L348 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2020-12-23 01:16:19,734 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2020-12-23 01:16:19,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:19,756 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2020-12-23 01:16:19,930 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:16:19,930 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2020-12-23 01:16:19,933 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:19,954 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:19,954 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 01:16:20,202 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:20,202 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:20,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,262 INFO L625 ElimStorePlain]: treesize reduction 90, result has 40.8 percent of original size [2020-12-23 01:16:20,263 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:20,481 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:20,482 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:20,486 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,538 INFO L625 ElimStorePlain]: treesize reduction 78, result has 44.3 percent of original size [2020-12-23 01:16:20,540 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:20,755 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:20,755 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:20,760 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,817 INFO L625 ElimStorePlain]: treesize reduction 62, result has 50.0 percent of original size [2020-12-23 01:16:20,818 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:21,025 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:16:21,030 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 61 [2020-12-23 01:16:21,032 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:21,050 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 1 xjuncts. [2020-12-23 01:16:21,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:80, output treesize:69 [2020-12-23 01:16:21,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:21,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:21,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:21,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:21,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:21,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:16:21,204 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:21,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:21,208 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:21,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:21,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:21,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:16:21,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:16:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:21,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:21,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 45 [2020-12-23 01:16:21,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436726335] [2020-12-23 01:16:21,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-23 01:16:21,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:21,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-23 01:16:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1763, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 01:16:21,302 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 45 states. [2020-12-23 01:16:23,568 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2020-12-23 01:16:26,005 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-12-23 01:16:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:26,051 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-12-23 01:16:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 01:16:26,052 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 41 [2020-12-23 01:16:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:26,053 INFO L225 Difference]: With dead ends: 78 [2020-12-23 01:16:26,053 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 01:16:26,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=485, Invalid=4071, Unknown=0, NotChecked=0, Total=4556 [2020-12-23 01:16:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 01:16:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-12-23 01:16:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 01:16:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 01:16:26,063 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2020-12-23 01:16:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:26,064 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 01:16:26,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-23 01:16:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 01:16:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 01:16:26,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:26,065 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:26,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 01:16:26,271 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1439099252, now seen corresponding path program 8 times [2020-12-23 01:16:26,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:26,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065879209] [2020-12-23 01:16:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065879209] [2020-12-23 01:16:26,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921902333] [2020-12-23 01:16:26,434 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 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 01:16:26,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:16:26,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:26,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:16:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:26,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:26,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2020-12-23 01:16:26,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366406628] [2020-12-23 01:16:26,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 01:16:26,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:26,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 01:16:26,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-23 01:16:26,740 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 22 states. [2020-12-23 01:16:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:27,228 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2020-12-23 01:16:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:16:27,229 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-12-23 01:16:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:27,230 INFO L225 Difference]: With dead ends: 96 [2020-12-23 01:16:27,230 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 01:16:27,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 01:16:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 01:16:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-12-23 01:16:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 01:16:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-12-23 01:16:27,240 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 44 [2020-12-23 01:16:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:27,241 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-12-23 01:16:27,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 01:16:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-12-23 01:16:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:16:27,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:27,242 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:27,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:27,456 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1953271904, now seen corresponding path program 9 times [2020-12-23 01:16:27,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:27,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697493651] [2020-12-23 01:16:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:29,258 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 01:16:29,561 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-23 01:16:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697493651] [2020-12-23 01:16:30,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008219950] [2020-12-23 01:16:30,485 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 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 01:16:30,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:16:30,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:30,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 01:16:30,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:30,636 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:30,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:30,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:16:30,753 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:30,754 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:30,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,764 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:16:30,907 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:30,908 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:16:30,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,944 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:16:30,946 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:30,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:16:31,141 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:16:31,141 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 69 [2020-12-23 01:16:31,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,178 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:16:31,179 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,179 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:16:31,401 INFO L348 Elim1Store]: treesize reduction 126, result has 33.7 percent of original size [2020-12-23 01:16:31,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 84 [2020-12-23 01:16:31,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,436 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.3 percent of original size [2020-12-23 01:16:31,438 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:16:31,807 INFO L348 Elim1Store]: treesize reduction 216, result has 26.0 percent of original size [2020-12-23 01:16:31,808 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 99 [2020-12-23 01:16:31,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,863 INFO L625 ElimStorePlain]: treesize reduction 22, result has 75.3 percent of original size [2020-12-23 01:16:31,865 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,865 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2020-12-23 01:16:32,400 INFO L348 Elim1Store]: treesize reduction 105, result has 36.4 percent of original size [2020-12-23 01:16:32,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 138 [2020-12-23 01:16:32,408 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,478 INFO L625 ElimStorePlain]: treesize reduction 55, result has 59.9 percent of original size [2020-12-23 01:16:32,480 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 01:16:32,480 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:86, output treesize:82 [2020-12-23 01:16:32,816 INFO L348 Elim1Store]: treesize reduction 105, result has 36.4 percent of original size [2020-12-23 01:16:32,817 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 143 [2020-12-23 01:16:32,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,887 INFO L625 ElimStorePlain]: treesize reduction 75, result has 53.1 percent of original size [2020-12-23 01:16:32,889 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 01:16:32,889 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:102, output treesize:85 [2020-12-23 01:16:33,180 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-23 01:16:33,181 INFO L348 Elim1Store]: treesize reduction 105, result has 57.3 percent of original size [2020-12-23 01:16:33,181 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 235 [2020-12-23 01:16:33,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,270 INFO L625 ElimStorePlain]: treesize reduction 152, result has 38.5 percent of original size [2020-12-23 01:16:33,272 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 01:16:33,273 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2020-12-23 01:16:33,821 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2020-12-23 01:16:33,822 INFO L348 Elim1Store]: treesize reduction 122, result has 65.0 percent of original size [2020-12-23 01:16:33,822 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 335 [2020-12-23 01:16:33,833 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,961 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-12-23 01:16:33,962 INFO L625 ElimStorePlain]: treesize reduction 254, result has 27.8 percent of original size [2020-12-23 01:16:33,964 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 01:16:33,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:121, output treesize:98 [2020-12-23 01:16:34,643 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2020-12-23 01:16:34,644 INFO L348 Elim1Store]: treesize reduction 157, result has 66.6 percent of original size [2020-12-23 01:16:34,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 433 [2020-12-23 01:16:34,657 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,835 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 51 [2020-12-23 01:16:34,837 INFO L625 ElimStorePlain]: treesize reduction 530, result has 16.9 percent of original size [2020-12-23 01:16:34,840 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 01:16:34,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:124, output treesize:108 [2020-12-23 01:16:35,918 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 124 [2020-12-23 01:16:35,919 INFO L348 Elim1Store]: treesize reduction 210, result has 65.5 percent of original size [2020-12-23 01:16:35,920 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 119 treesize of output 532 [2020-12-23 01:16:35,932 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:36,137 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 54 [2020-12-23 01:16:36,137 INFO L625 ElimStorePlain]: treesize reduction 541, result has 18.3 percent of original size [2020-12-23 01:16:36,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:36,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:137, output treesize:121 [2020-12-23 01:16:39,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:39,310 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:39,316 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:39,318 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:39,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:39,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:39,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:39,337 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:39,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:39,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:39,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:16:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:39,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:39,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 59 [2020-12-23 01:16:39,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095322629] [2020-12-23 01:16:39,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-23 01:16:39,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-23 01:16:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3128, Unknown=1, NotChecked=0, Total=3422 [2020-12-23 01:16:39,493 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 59 states. [2020-12-23 01:16:41,617 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 50 [2020-12-23 01:16:41,862 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2020-12-23 01:16:42,091 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-12-23 01:16:42,524 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-12-23 01:16:42,825 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-12-23 01:16:43,082 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-12-23 01:16:43,818 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2020-12-23 01:16:44,294 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-23 01:16:44,528 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-12-23 01:16:44,788 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-12-23 01:16:45,019 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-12-23 01:16:45,292 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2020-12-23 01:16:47,709 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-12-23 01:16:50,306 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-12-23 01:16:50,860 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 59 [2020-12-23 01:16:51,037 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-12-23 01:16:55,386 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-12-23 01:16:57,694 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 58 [2020-12-23 01:16:57,890 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-12-23 01:16:58,337 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 63 [2020-12-23 01:16:59,005 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 85 [2020-12-23 01:16:59,263 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-12-23 01:16:59,875 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 73 [2020-12-23 01:17:02,601 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2020-12-23 01:17:05,487 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2020-12-23 01:17:06,155 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 89 [2020-12-23 01:17:06,979 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2020-12-23 01:17:07,551 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 90 [2020-12-23 01:17:08,389 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 89 [2020-12-23 01:17:08,949 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2020-12-23 01:17:09,416 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 82 [2020-12-23 01:17:10,100 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2020-12-23 01:17:10,367 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 01:17:10,786 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-12-23 01:17:11,046 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-12-23 01:17:11,346 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-12-23 01:17:11,618 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-23 01:17:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:11,651 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2020-12-23 01:17:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-12-23 01:17:11,653 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 47 [2020-12-23 01:17:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:11,656 INFO L225 Difference]: With dead ends: 121 [2020-12-23 01:17:11,657 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 01:17:11,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4485 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=1236, Invalid=12566, Unknown=4, NotChecked=0, Total=13806 [2020-12-23 01:17:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 01:17:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2020-12-23 01:17:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 01:17:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-12-23 01:17:11,692 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 47 [2020-12-23 01:17:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:11,692 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-12-23 01:17:11,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-23 01:17:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-12-23 01:17:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 01:17:11,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:11,694 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:11,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:11,908 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:11,909 INFO L82 PathProgramCache]: Analyzing trace with hash -812946688, now seen corresponding path program 10 times [2020-12-23 01:17:11,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:11,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460977966] [2020-12-23 01:17:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:12,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460977966] [2020-12-23 01:17:12,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877175194] [2020-12-23 01:17:12,135 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 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 01:17:12,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:17:12,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:12,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 01:17:12,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 89 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 01:17:12,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:12,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2020-12-23 01:17:12,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026253845] [2020-12-23 01:17:12,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 01:17:12,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 01:17:12,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2020-12-23 01:17:12,510 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 26 states. [2020-12-23 01:17:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:12,960 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-12-23 01:17:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 01:17:12,961 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-12-23 01:17:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:12,962 INFO L225 Difference]: With dead ends: 153 [2020-12-23 01:17:12,962 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 01:17:12,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 01:17:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 01:17:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2020-12-23 01:17:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 01:17:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-12-23 01:17:12,981 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 53 [2020-12-23 01:17:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:12,981 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-12-23 01:17:12,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 01:17:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-12-23 01:17:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 01:17:12,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:12,983 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:13,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:17:13,198 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:13,199 INFO L82 PathProgramCache]: Analyzing trace with hash -918505701, now seen corresponding path program 11 times [2020-12-23 01:17:13,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:13,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487713716] [2020-12-23 01:17:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:14,411 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 01:17:14,596 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 01:17:14,776 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 01:17:15,076 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:17:15,243 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:17:15,425 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:17:15,581 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-12-23 01:17:15,820 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-23 01:17:16,006 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-23 01:17:16,185 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-12-23 01:17:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:17,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487713716] [2020-12-23 01:17:17,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243307364] [2020-12-23 01:17:17,473 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 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 01:17:17,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 01:17:17,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:17,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 01:17:17,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:17,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:17:17,793 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:17:17,828 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:17:17,829 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,846 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:17:17,875 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2020-12-23 01:17:17,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,889 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2020-12-23 01:17:17,891 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,899 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,930 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:36 [2020-12-23 01:17:17,965 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2020-12-23 01:17:17,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2020-12-23 01:17:17,991 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,002 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:18,005 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:18,025 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,025 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:62, output treesize:44 [2020-12-23 01:17:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,149 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2020-12-23 01:17:18,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:18,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-23 01:17:18,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2020-12-23 01:17:18,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:18,483 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:68 [2020-12-23 01:17:18,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:18,807 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 106 [2020-12-23 01:17:18,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,873 INFO L625 ElimStorePlain]: treesize reduction 7, result has 93.6 percent of original size [2020-12-23 01:17:18,874 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,874 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:103 [2020-12-23 01:17:19,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,058 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 121 [2020-12-23 01:17:19,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,099 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:19,100 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,101 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:117, output treesize:113 [2020-12-23 01:17:19,399 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 120 [2020-12-23 01:17:19,434 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:19,473 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:111 [2020-12-23 01:17:19,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,768 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,789 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 130 [2020-12-23 01:17:19,794 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:19,834 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,835 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:117 [2020-12-23 01:17:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,124 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:20,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 119 [2020-12-23 01:17:20,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:20,192 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:110 [2020-12-23 01:17:20,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,541 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:20,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,560 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 113 [2020-12-23 01:17:20,564 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:20,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:100 [2020-12-23 01:17:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:20,934 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:20,936 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 113 [2020-12-23 01:17:20,941 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:20,980 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:20,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:106 [2020-12-23 01:17:21,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2020-12-23 01:17:21,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:21,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:21,537 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 01:17:21,537 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:63 [2020-12-23 01:17:21,722 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:21,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:21,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:21,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:21,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:21,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:17:21,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:21,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:21,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:21,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:21,762 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:21,764 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:17:21,767 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:17:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:21,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:21,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 26] total 51 [2020-12-23 01:17:21,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110850080] [2020-12-23 01:17:21,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-23 01:17:21,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-23 01:17:21,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2260, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 01:17:21,902 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 51 states. [2020-12-23 01:17:24,576 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2020-12-23 01:17:24,851 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 51 [2020-12-23 01:17:25,203 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2020-12-23 01:17:25,355 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-12-23 01:17:25,663 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2020-12-23 01:17:26,023 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2020-12-23 01:17:26,257 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-12-23 01:17:26,465 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 52 [2020-12-23 01:17:26,792 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 54 [2020-12-23 01:17:27,093 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2020-12-23 01:17:27,392 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2020-12-23 01:17:27,616 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2020-12-23 01:17:27,919 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2020-12-23 01:17:28,355 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 56 [2020-12-23 01:17:28,654 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2020-12-23 01:17:29,023 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 54 [2020-12-23 01:17:29,313 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 56 [2020-12-23 01:17:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:29,435 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2020-12-23 01:17:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 01:17:29,437 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 53 [2020-12-23 01:17:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:29,437 INFO L225 Difference]: With dead ends: 152 [2020-12-23 01:17:29,437 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 01:17:29,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=650, Invalid=5670, Unknown=0, NotChecked=0, Total=6320 [2020-12-23 01:17:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 01:17:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2020-12-23 01:17:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 01:17:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-12-23 01:17:29,456 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2020-12-23 01:17:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:29,456 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-12-23 01:17:29,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-23 01:17:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-12-23 01:17:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 01:17:29,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:29,458 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:29,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 01:17:29,672 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:29,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1629587630, now seen corresponding path program 12 times [2020-12-23 01:17:29,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:29,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032084346] [2020-12-23 01:17:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:29,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032084346] [2020-12-23 01:17:29,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621225746] [2020-12-23 01:17:29,948 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 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 01:17:30,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 01:17:30,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:30,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 01:17:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:30,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:30,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2020-12-23 01:17:30,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328881579] [2020-12-23 01:17:30,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 01:17:30,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:30,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 01:17:30,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:17:30,569 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 28 states. [2020-12-23 01:17:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:31,126 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-12-23 01:17:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 01:17:31,128 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-12-23 01:17:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:31,129 INFO L225 Difference]: With dead ends: 94 [2020-12-23 01:17:31,129 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 01:17:31,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:17:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 01:17:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-12-23 01:17:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 01:17:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-12-23 01:17:31,146 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 56 [2020-12-23 01:17:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:31,146 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-12-23 01:17:31,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 01:17:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-12-23 01:17:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 01:17:31,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:31,147 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:31,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:17:31,357 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2108285950, now seen corresponding path program 13 times [2020-12-23 01:17:31,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:31,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947815345] [2020-12-23 01:17:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:32,005 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 27 [2020-12-23 01:17:32,499 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 01:17:32,831 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-23 01:17:33,010 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-12-23 01:17:33,215 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-23 01:17:33,456 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 01:17:33,675 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 01:17:33,875 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 01:17:34,083 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:17:34,296 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:17:34,532 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-23 01:17:34,741 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-23 01:17:34,991 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-23 01:17:35,219 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-12-23 01:17:35,473 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 01:17:35,873 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 01:17:36,080 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 01:17:36,311 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-23 01:17:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947815345] [2020-12-23 01:17:37,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30838570] [2020-12-23 01:17:37,382 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 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 01:17:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:37,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 01:17:37,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:37,475 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:17:37,478 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,483 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:37,484 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,485 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:17:37,641 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:17:37,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,651 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:37,652 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:17:37,856 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:37,856 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:17:37,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,897 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:17:37,899 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:37,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:17:38,183 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:17:38,183 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:17:38,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:38,238 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:17:38,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:38,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:17:38,592 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 01:17:38,593 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:17:38,594 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:17:38,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:38,669 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:17:38,670 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:38,670 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:17:39,077 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:17:39,078 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:17:39,078 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:17:39,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:39,164 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2020-12-23 01:17:39,166 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:39,167 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:17:39,661 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-12-23 01:17:39,662 INFO L348 Elim1Store]: treesize reduction 120, result has 62.0 percent of original size [2020-12-23 01:17:39,663 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 222 [2020-12-23 01:17:39,671 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:39,780 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-23 01:17:39,781 INFO L625 ElimStorePlain]: treesize reduction 110, result has 36.8 percent of original size [2020-12-23 01:17:39,782 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:39,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2020-12-23 01:17:40,399 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 35 [2020-12-23 01:17:40,400 INFO L348 Elim1Store]: treesize reduction 336, result has 14.1 percent of original size [2020-12-23 01:17:40,400 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 82 [2020-12-23 01:17:40,404 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:40,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:40,435 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:40,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2020-12-23 01:17:40,773 INFO L348 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2020-12-23 01:17:40,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2020-12-23 01:17:40,776 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:40,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:40,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:40,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:81 [2020-12-23 01:17:41,357 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:41,359 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:41,359 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 206 [2020-12-23 01:17:41,367 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:41,476 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-12-23 01:17:41,477 INFO L625 ElimStorePlain]: treesize reduction 142, result has 39.1 percent of original size [2020-12-23 01:17:41,479 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:41,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:91 [2020-12-23 01:17:42,001 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:42,002 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:42,003 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 206 [2020-12-23 01:17:42,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:42,113 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-12-23 01:17:42,114 INFO L625 ElimStorePlain]: treesize reduction 122, result has 42.2 percent of original size [2020-12-23 01:17:42,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:42,116 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:89 [2020-12-23 01:17:42,619 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:42,620 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:42,620 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 206 [2020-12-23 01:17:42,626 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:42,741 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-12-23 01:17:42,742 INFO L625 ElimStorePlain]: treesize reduction 148, result has 38.1 percent of original size [2020-12-23 01:17:42,744 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:42,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:91 [2020-12-23 01:17:43,309 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:43,310 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:43,311 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 206 [2020-12-23 01:17:43,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:43,426 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-12-23 01:17:43,427 INFO L625 ElimStorePlain]: treesize reduction 144, result has 42.2 percent of original size [2020-12-23 01:17:43,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:43,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:105 [2020-12-23 01:17:43,977 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:43,979 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:43,979 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 206 [2020-12-23 01:17:43,986 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:44,094 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-12-23 01:17:44,095 INFO L625 ElimStorePlain]: treesize reduction 144, result has 38.7 percent of original size [2020-12-23 01:17:44,097 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:44,097 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:91 [2020-12-23 01:17:44,633 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:17:44,634 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:17:44,634 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 206 [2020-12-23 01:17:44,641 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:44,765 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-12-23 01:17:44,766 INFO L625 ElimStorePlain]: treesize reduction 174, result has 35.8 percent of original size [2020-12-23 01:17:44,767 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:44,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:97 [2020-12-23 01:17:45,188 INFO L348 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2020-12-23 01:17:45,188 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 99 [2020-12-23 01:17:45,191 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:45,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:45,227 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 1 xjuncts. [2020-12-23 01:17:45,228 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:86 [2020-12-23 01:17:45,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:17:45,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,470 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,472 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:45,477 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:45,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:17:45,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:17:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:45,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:45,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31] total 67 [2020-12-23 01:17:45,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852813210] [2020-12-23 01:17:45,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-12-23 01:17:45,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-12-23 01:17:45,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=4030, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 01:17:45,641 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 67 states. [2020-12-23 01:17:49,158 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-12-23 01:17:49,438 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-12-23 01:17:49,709 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-12-23 01:17:50,022 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 41 [2020-12-23 01:17:50,412 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2020-12-23 01:17:50,751 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 50 [2020-12-23 01:17:51,169 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 52 [2020-12-23 01:17:51,357 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-12-23 01:17:51,877 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 53 [2020-12-23 01:17:52,336 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 54 [2020-12-23 01:17:52,668 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2020-12-23 01:17:52,956 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2020-12-23 01:17:53,348 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 49 [2020-12-23 01:17:53,744 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 50 [2020-12-23 01:17:54,113 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 52 [2020-12-23 01:17:54,432 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 51 [2020-12-23 01:17:54,878 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 53 [2020-12-23 01:17:55,389 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2020-12-23 01:17:55,833 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-12-23 01:17:56,245 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 57 [2020-12-23 01:17:56,799 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 61 [2020-12-23 01:17:57,268 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 63 [2020-12-23 01:17:57,715 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2020-12-23 01:17:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:57,822 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2020-12-23 01:17:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-23 01:17:57,824 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 59 [2020-12-23 01:17:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:57,825 INFO L225 Difference]: With dead ends: 105 [2020-12-23 01:17:57,825 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 01:17:57,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3500 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=895, Invalid=9817, Unknown=0, NotChecked=0, Total=10712 [2020-12-23 01:17:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 01:17:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2020-12-23 01:17:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 01:17:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-12-23 01:17:57,844 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 59 [2020-12-23 01:17:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:57,845 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-12-23 01:17:57,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-12-23 01:17:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-12-23 01:17:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 01:17:57,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:57,846 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:58,061 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash -58716949, now seen corresponding path program 14 times [2020-12-23 01:17:58,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:58,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439720505] [2020-12-23 01:17:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 95 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:58,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439720505] [2020-12-23 01:17:58,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059686886] [2020-12-23 01:17:58,489 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 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 01:17:58,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:17:58,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 01:17:58,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:59,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:59,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2020-12-23 01:17:59,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046241195] [2020-12-23 01:17:59,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 01:17:59,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 01:17:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-12-23 01:17:59,083 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 31 states. [2020-12-23 01:18:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:00,200 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-12-23 01:18:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 01:18:00,201 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2020-12-23 01:18:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:00,202 INFO L225 Difference]: With dead ends: 132 [2020-12-23 01:18:00,203 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 01:18:00,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 01:18:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 01:18:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-12-23 01:18:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 01:18:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-12-23 01:18:00,218 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 62 [2020-12-23 01:18:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:00,218 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-12-23 01:18:00,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 01:18:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-12-23 01:18:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 01:18:00,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:00,219 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:00,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:18:00,432 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:00,433 INFO L82 PathProgramCache]: Analyzing trace with hash -234181573, now seen corresponding path program 15 times [2020-12-23 01:18:00,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:00,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622553176] [2020-12-23 01:18:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:01,680 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 01:18:01,839 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-12-23 01:18:02,067 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-23 01:18:02,280 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-12-23 01:18:02,535 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-12-23 01:18:02,777 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-23 01:18:02,998 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:18:03,270 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 01:18:03,520 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-12-23 01:18:03,739 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:18:03,973 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:18:04,208 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:18:04,467 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 01:18:04,705 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 01:18:04,954 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-12-23 01:18:05,198 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-12-23 01:18:05,572 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-12-23 01:18:05,932 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-12-23 01:18:06,182 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-23 01:18:06,429 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-23 01:18:06,660 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-23 01:18:06,887 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-23 01:18:07,120 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 01:18:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 26 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:08,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622553176] [2020-12-23 01:18:08,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854215501] [2020-12-23 01:18:08,481 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 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 01:18:08,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 01:18:08,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:08,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-23 01:18:08,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:09,085 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 15 treesize of output 11 [2020-12-23 01:18:09,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,123 INFO L625 ElimStorePlain]: treesize reduction 6, result has 81.3 percent of original size [2020-12-23 01:18:09,124 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,124 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:26 [2020-12-23 01:18:09,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:09,371 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-23 01:18:09,372 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:09,395 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2020-12-23 01:18:09,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:09,699 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:09,700 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:18:09,704 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,785 INFO L625 ElimStorePlain]: treesize reduction 32, result has 63.6 percent of original size [2020-12-23 01:18:09,787 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:09,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:56 [2020-12-23 01:18:10,126 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:10,126 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:10,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:10,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,241 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:10,241 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 141 [2020-12-23 01:18:10,246 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,280 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2020-12-23 01:18:10,284 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:10,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:10,291 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:10,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:10,301 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:10,306 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2020-12-23 01:18:10,309 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:10,583 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-12-23 01:18:10,584 INFO L625 ElimStorePlain]: treesize reduction 56, result has 72.3 percent of original size [2020-12-23 01:18:10,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:18:10,586 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:225, output treesize:146 [2020-12-23 01:18:10,850 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-23 01:18:11,124 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 01:18:11,135 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:18:11,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,187 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2020-12-23 01:18:11,190 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:11,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,221 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2020-12-23 01:18:11,224 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:11,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:11,367 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:11,368 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 186 [2020-12-23 01:18:11,374 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:11,693 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-23 01:18:11,694 INFO L625 ElimStorePlain]: treesize reduction 56, result has 76.5 percent of original size [2020-12-23 01:18:11,696 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:18:11,696 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:194, output treesize:182 [2020-12-23 01:18:11,999 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 01:18:12,327 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 01:18:12,341 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:18:12,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,358 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,367 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,511 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:12,512 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 111 [2020-12-23 01:18:12,515 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,624 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2020-12-23 01:18:12,627 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,638 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,646 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,647 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,657 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:12,768 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:12,769 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 111 [2020-12-23 01:18:12,776 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,782 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:18:12,787 INFO L547 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,939 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-23 01:18:12,940 INFO L625 ElimStorePlain]: treesize reduction 213, result has 27.3 percent of original size [2020-12-23 01:18:12,941 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:12,942 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 1 variables, input treesize:769, output treesize:80 [2020-12-23 01:18:13,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:13,509 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-23 01:18:13,510 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:13,510 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 276 [2020-12-23 01:18:13,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:13,643 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-23 01:18:13,644 INFO L625 ElimStorePlain]: treesize reduction 46, result has 66.7 percent of original size [2020-12-23 01:18:13,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:13,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:92 [2020-12-23 01:18:14,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:14,507 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 01:18:14,509 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:14,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 94 treesize of output 321 [2020-12-23 01:18:14,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:14,713 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-12-23 01:18:14,715 INFO L625 ElimStorePlain]: treesize reduction 68, result has 61.1 percent of original size [2020-12-23 01:18:14,717 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:14,717 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:111, output treesize:107 [2020-12-23 01:18:15,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:15,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,060 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-23 01:18:16,062 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:16,063 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 101 treesize of output 299 [2020-12-23 01:18:16,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:16,256 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-23 01:18:16,258 INFO L625 ElimStorePlain]: treesize reduction 24, result has 83.6 percent of original size [2020-12-23 01:18:16,261 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 01:18:16,261 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:126, output treesize:122 [2020-12-23 01:18:16,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,921 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:16,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:16,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:17,145 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-23 01:18:17,146 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:17,147 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 122 treesize of output 318 [2020-12-23 01:18:17,153 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:17,362 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-12-23 01:18:17,363 INFO L625 ElimStorePlain]: treesize reduction 60, result has 68.8 percent of original size [2020-12-23 01:18:17,366 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 01:18:17,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:132 [2020-12-23 01:18:18,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,084 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:18,318 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-23 01:18:18,319 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:18,320 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 122 treesize of output 318 [2020-12-23 01:18:18,330 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,563 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-23 01:18:18,564 INFO L625 ElimStorePlain]: treesize reduction 83, result has 60.7 percent of original size [2020-12-23 01:18:18,566 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 01:18:18,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:128 [2020-12-23 01:18:19,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:19,540 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-23 01:18:19,542 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:19,542 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 19 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 122 treesize of output 416 [2020-12-23 01:18:19,553 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:19,807 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2020-12-23 01:18:19,809 INFO L625 ElimStorePlain]: treesize reduction 172, result has 43.0 percent of original size [2020-12-23 01:18:19,812 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 01:18:19,813 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:130 [2020-12-23 01:18:20,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:20,644 INFO L244 Elim1Store]: Index analysis took 108 ms [2020-12-23 01:18:20,979 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-12-23 01:18:20,980 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:20,981 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 23 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 131 treesize of output 518 [2020-12-23 01:18:20,992 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:21,313 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 63 [2020-12-23 01:18:21,314 INFO L625 ElimStorePlain]: treesize reduction 336, result has 29.6 percent of original size [2020-12-23 01:18:21,318 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 01:18:21,318 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:156, output treesize:141 [2020-12-23 01:18:22,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:22,218 INFO L244 Elim1Store]: Index analysis took 138 ms [2020-12-23 01:18:22,627 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-12-23 01:18:22,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:22,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 29 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 27 case distinctions, treesize of input 142 treesize of output 604 [2020-12-23 01:18:22,643 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:23,022 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 66 [2020-12-23 01:18:23,023 INFO L625 ElimStorePlain]: treesize reduction 554, result has 21.4 percent of original size [2020-12-23 01:18:23,028 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 01:18:23,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:167, output treesize:151 [2020-12-23 01:18:23,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:24,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:24,011 INFO L244 Elim1Store]: Index analysis took 175 ms [2020-12-23 01:18:24,527 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-12-23 01:18:24,528 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:24,529 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 37 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 30 case distinctions, treesize of input 152 treesize of output 671 [2020-12-23 01:18:24,547 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:25,017 WARN L197 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 68 [2020-12-23 01:18:25,018 INFO L625 ElimStorePlain]: treesize reduction 810, result has 16.6 percent of original size [2020-12-23 01:18:25,021 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 01:18:25,021 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:177, output treesize:161 [2020-12-23 01:18:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:25,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:26,062 INFO L244 Elim1Store]: Index analysis took 206 ms [2020-12-23 01:18:26,593 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-12-23 01:18:26,595 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:26,595 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 47 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 32 case distinctions, treesize of input 162 treesize of output 720 [2020-12-23 01:18:26,613 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:27,059 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 70 [2020-12-23 01:18:27,061 INFO L625 ElimStorePlain]: treesize reduction 553, result has 23.6 percent of original size [2020-12-23 01:18:27,064 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 01:18:27,064 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:187, output treesize:171 [2020-12-23 01:18:28,528 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-23 01:18:28,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,563 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,593 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,613 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,640 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,644 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,659 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:18:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:18:28,662 INFO L244 Elim1Store]: Index analysis took 110 ms [2020-12-23 01:18:28,665 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 29 disjoint index pairs (out of 105 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 120 [2020-12-23 01:18:28,668 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:28,813 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 01:18:28,814 INFO L625 ElimStorePlain]: treesize reduction 3, result has 98.2 percent of original size [2020-12-23 01:18:28,818 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 1 xjuncts. [2020-12-23 01:18:28,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:176, output treesize:162 [2020-12-23 01:18:29,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,971 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:29,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:29,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:18:29,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:29,998 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:30,002 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:30,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:18:30,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 16 disjuncts [2020-12-23 01:18:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:30,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:18:30,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43] total 83 [2020-12-23 01:18:30,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798636907] [2020-12-23 01:18:30,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-12-23 01:18:30,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-12-23 01:18:30,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=6279, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 01:18:30,284 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 83 states. [2020-12-23 01:18:32,875 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-23 01:18:33,205 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-12-23 01:18:33,564 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-12-23 01:18:34,024 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-23 01:18:34,431 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-12-23 01:18:34,853 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 01:18:35,316 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-12-23 01:18:35,749 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-12-23 01:18:36,254 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-12-23 01:18:36,767 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-23 01:18:37,220 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-12-23 01:18:37,688 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-12-23 01:18:38,258 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-12-23 01:18:38,735 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-12-23 01:18:39,324 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 47 [2020-12-23 01:18:40,000 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 54 [2020-12-23 01:18:40,491 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 58 [2020-12-23 01:18:41,160 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 61 [2020-12-23 01:18:41,766 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 60 [2020-12-23 01:18:42,177 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2020-12-23 01:18:43,017 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 64 [2020-12-23 01:18:44,348 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-12-23 01:18:44,707 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2020-12-23 01:18:45,267 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-12-23 01:18:45,761 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 62 [2020-12-23 01:18:46,397 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 66 [2020-12-23 01:18:46,952 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2020-12-23 01:18:47,743 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 63 [2020-12-23 01:18:48,159 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-12-23 01:18:48,729 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-12-23 01:18:49,350 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 64 [2020-12-23 01:18:49,833 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-12-23 01:18:50,623 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 67 [2020-12-23 01:18:51,597 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 69 [2020-12-23 01:18:52,159 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2020-12-23 01:18:52,934 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-12-23 01:18:53,958 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 75 [2020-12-23 01:18:54,311 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:18:55,779 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 70 [2020-12-23 01:18:56,167 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-23 01:18:59,415 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 74 [2020-12-23 01:19:02,789 WARN L197 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 76 [2020-12-23 01:19:03,214 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-23 01:19:05,364 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:19:06,080 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-23 01:19:07,427 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 93 [2020-12-23 01:19:07,895 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-23 01:19:09,191 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 95 [2020-12-23 01:19:09,686 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 01:19:10,601 WARN L197 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-12-23 01:19:11,449 WARN L197 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-12-23 01:19:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:11,531 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2020-12-23 01:19:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-23 01:19:11,533 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 65 [2020-12-23 01:19:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:11,534 INFO L225 Difference]: With dead ends: 150 [2020-12-23 01:19:11,534 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 01:19:11,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6362 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=1589, Invalid=17871, Unknown=0, NotChecked=0, Total=19460 [2020-12-23 01:19:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 01:19:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-12-23 01:19:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 01:19:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-23 01:19:11,551 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 65 [2020-12-23 01:19:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:11,551 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-23 01:19:11,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-12-23 01:19:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-23 01:19:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 01:19:11,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:11,552 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:11,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:11,759 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash -246765152, now seen corresponding path program 16 times [2020-12-23 01:19:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:11,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875123966] [2020-12-23 01:19:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:19:12,691 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-12-23 01:19:12,851 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2020-12-23 01:19:13,020 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-12-23 01:19:13,183 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2020-12-23 01:19:13,351 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-12-23 01:19:13,536 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-12-23 01:19:13,724 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-12-23 01:19:13,967 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-12-23 01:19:14,181 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-23 01:19:14,441 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-12-23 01:19:14,697 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-12-23 01:19:15,035 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-23 01:19:15,397 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-12-23 01:19:15,754 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-23 01:19:16,134 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 01:19:16,512 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-12-23 01:19:16,857 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-23 01:19:17,154 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 01:19:17,461 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-12-23 01:19:17,801 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-12-23 01:19:18,175 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-12-23 01:19:18,617 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-12-23 01:19:19,070 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-12-23 01:19:19,516 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-12-23 01:19:19,917 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-12-23 01:19:20,297 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-12-23 01:19:20,660 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-23 01:19:21,116 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 01:19:21,439 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 01:19:21,822 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-23 01:19:22,165 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 01:19:22,527 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-23 01:19:22,838 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-23 01:19:23,175 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-12-23 01:19:23,469 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-12-23 01:19:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 35 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:24,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875123966] [2020-12-23 01:19:24,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027041394] [2020-12-23 01:19:24,557 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 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 01:19:24,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:19:24,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:24,640 WARN L261 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 01:19:24,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:24,671 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:19:24,675 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:24,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:24,690 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:24,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:19:25,046 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:19:25,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:25,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:25,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:25,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:19:25,567 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:25,568 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:19:25,572 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:25,642 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:19:25,644 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:25,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:19:26,232 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2020-12-23 01:19:26,234 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:19:26,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 69 [2020-12-23 01:19:26,238 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:26,318 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:19:26,320 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:26,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:19:27,010 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 01:19:27,012 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:19:27,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:19:27,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:27,153 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-23 01:19:27,154 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:19:27,156 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:27,156 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:19:27,929 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:19:27,931 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:19:27,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:19:27,937 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.