/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/modn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:21:42,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:21:42,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:21:42,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:21:42,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:21:42,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:21:42,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:21:42,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:21:42,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:21:42,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:21:42,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:21:42,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:21:42,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:21:42,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:21:42,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:21:42,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:21:42,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:21:42,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:21:42,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:21:42,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:21:42,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:21:42,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:21:42,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:21:42,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:21:42,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:21:42,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:21:42,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:21:42,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:21:42,849 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 01:21:42,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:21:42,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:21:42,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:21:42,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:21:42,885 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:21:42,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:21:42,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:21:42,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:21:42,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:21:42,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:21:42,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:21:42,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:21:42,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:21:42,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:21:42,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:21:42,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:21:42,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:21:42,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:21:42,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:21:42,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:21:42,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:21:42,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:21:42,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:21:42,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:21:42,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:21:42,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:21:43,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:21:43,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:21:43,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:21:43,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:21:43,362 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:21:43,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modn.c [2020-12-23 01:21:43,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a35547a2a/04b2715a338e4a0bb8057df38b6d5f42/FLAG7f1973c0f [2020-12-23 01:21:44,221 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:21:44,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/modn.c [2020-12-23 01:21:44,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a35547a2a/04b2715a338e4a0bb8057df38b6d5f42/FLAG7f1973c0f [2020-12-23 01:21:44,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a35547a2a/04b2715a338e4a0bb8057df38b6d5f42 [2020-12-23 01:21:44,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:21:44,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:21:44,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:44,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:21:44,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:21:44,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d63ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44, skipping insertion in model container [2020-12-23 01:21:44,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:21:44,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:21:44,747 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/modn.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[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: 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: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:44,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:44,787 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:21:44,804 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/modn.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] 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: 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: 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: lhs: VariableLHS[~i~0,] [2020-12-23 01:21:44,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:21:44,837 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:21:44,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44 WrapperNode [2020-12-23 01:21:44,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:21:44,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:44,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:21:44,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:21:44,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:21:44,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:21:44,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:21:44,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:21:44,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... [2020-12-23 01:21:44,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:21:44,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:21:44,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:21:44,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:21:44,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:21:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:21:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:21:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:21:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:21:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:21:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:21:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:21:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:21:45,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:21:45,475 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 01:21:45,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:45 BoogieIcfgContainer [2020-12-23 01:21:45,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:21:45,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:21:45,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:21:45,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:21:45,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:21:44" (1/3) ... [2020-12-23 01:21:45,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:45, skipping insertion in model container [2020-12-23 01:21:45,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:21:44" (2/3) ... [2020-12-23 01:21:45,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5475932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:21:45, skipping insertion in model container [2020-12-23 01:21:45,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:21:45" (3/3) ... [2020-12-23 01:21:45,536 INFO L111 eAbstractionObserver]: Analyzing ICFG modn.c [2020-12-23 01:21:45,561 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:21:45,598 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:21:45,644 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:21:45,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:21:45,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:21:45,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:21:45,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:21:45,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:21:45,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:21:45,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:21:45,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:21:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 01:21:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:21:45,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:45,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:45,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:45,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-12-23 01:21:45,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:45,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013005922] [2020-12-23 01:21:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:46,103 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 01:21:46,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013005922] [2020-12-23 01:21:46,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:46,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:21:46,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736450030] [2020-12-23 01:21:46,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:21:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:46,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:21:46,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:21:46,147 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 01:21:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:46,180 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-23 01:21:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:21:46,182 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 01:21:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:46,214 INFO L225 Difference]: With dead ends: 38 [2020-12-23 01:21:46,215 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 01:21:46,221 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 01:21:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 01:21:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 01:21:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 01:21:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 01:21:46,271 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-12-23 01:21:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:46,271 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 01:21:46,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:21:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 01:21:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:21:46,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:46,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:46,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:21:46,277 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-12-23 01:21:46,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:46,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893489855] [2020-12-23 01:21:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:46,418 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 01:21:46,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893489855] [2020-12-23 01:21:46,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:21:46,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:21:46,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105138424] [2020-12-23 01:21:46,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:21:46,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:46,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:21:46,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:21:46,425 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2020-12-23 01:21:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:46,589 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-12-23 01:21:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:21:46,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 01:21:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:46,591 INFO L225 Difference]: With dead ends: 37 [2020-12-23 01:21:46,591 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 01:21:46,592 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 01:21:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 01:21:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-12-23 01:21:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 01:21:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-12-23 01:21:46,600 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2020-12-23 01:21:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:46,601 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-12-23 01:21:46,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:21:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-12-23 01:21:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:21:46,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:46,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:46,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:21:46,603 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:46,604 INFO L82 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2020-12-23 01:21:46,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:46,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252638432] [2020-12-23 01:21:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:46,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:46,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918728612] [2020-12-23 01:21:46,636 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 01:21:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:46,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 01:21:46,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:46,873 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 11 treesize of output 7 [2020-12-23 01:21:46,875 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:46,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:46,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:46,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-23 01:21:46,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:21:46,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:46,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:46,947 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:46,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:17 [2020-12-23 01:21:47,124 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:47,125 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 46 [2020-12-23 01:21:47,130 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:47,185 INFO L625 ElimStorePlain]: treesize reduction 18, result has 63.3 percent of original size [2020-12-23 01:21:47,192 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:47,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:16 [2020-12-23 01:21:47,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:47,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:47,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252638432] [2020-12-23 01:21:47,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:47,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918728612] [2020-12-23 01:21:47,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:47,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:21:47,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882840850] [2020-12-23 01:21:47,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:21:47,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:21:47,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:21:47,368 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2020-12-23 01:21:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:48,106 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-12-23 01:21:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:21:48,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-23 01:21:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:48,108 INFO L225 Difference]: With dead ends: 39 [2020-12-23 01:21:48,108 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:21:48,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-12-23 01:21:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:21:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2020-12-23 01:21:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:21:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-23 01:21:48,117 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-12-23 01:21:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:48,117 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-23 01:21:48,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:21:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-23 01:21:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:21:48,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:48,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:48,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:21:48,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2020-12-23 01:21:48,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:48,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860371554] [2020-12-23 01:21:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:48,357 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:48,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121876323] [2020-12-23 01:21:48,358 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 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 01:21:48,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:21:48,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:21:48,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:21:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:48,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860371554] [2020-12-23 01:21:48,509 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:48,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121876323] [2020-12-23 01:21:48,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:48,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:21:48,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932774049] [2020-12-23 01:21:48,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:21:48,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:48,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:21:48,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:21:48,512 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-12-23 01:21:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:48,633 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-12-23 01:21:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 01:21:48,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 01:21:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:48,635 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:21:48,635 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:21:48,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:21:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:21:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2020-12-23 01:21:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 01:21:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-23 01:21:48,643 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2020-12-23 01:21:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:48,644 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-23 01:21:48,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:21:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-23 01:21:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:21:48,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:48,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:48,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:21:48,860 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:48,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2020-12-23 01:21:48,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:48,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219950656] [2020-12-23 01:21:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:48,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:48,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041065118] [2020-12-23 01:21:48,883 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 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 01:21:48,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 01:21:48,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:21:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 01:21:48,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:49,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:49,027 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:49,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:49,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:49,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:49,084 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:49,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 75 [2020-12-23 01:21:49,086 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:49,124 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:49,124 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 58 [2020-12-23 01:21:49,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,129 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:21:49,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:21:49,138 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:49,179 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:49,180 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 63 [2020-12-23 01:21:49,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:49,195 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:21:49,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:49,213 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:21:49,219 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:49,266 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:49,267 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 60 [2020-12-23 01:21:49,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,272 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:21:49,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,279 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:21:49,281 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:49,621 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 01:21:49,622 INFO L625 ElimStorePlain]: treesize reduction 66, result has 74.7 percent of original size [2020-12-23 01:21:49,658 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:49,658 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 72 [2020-12-23 01:21:49,662 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 01:21:49,664 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:49,673 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 01:21:49,674 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:49,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:49,679 INFO L547 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:50,033 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 01:21:50,034 INFO L625 ElimStorePlain]: treesize reduction 24, result has 89.1 percent of original size [2020-12-23 01:21:50,057 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2020-12-23 01:21:50,057 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:237, output treesize:120 [2020-12-23 01:21:50,258 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-12-23 01:21:50,271 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-23 01:21:50,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:50,404 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:50,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:50,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 01:21:50,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219950656] [2020-12-23 01:21:50,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:50,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041065118] [2020-12-23 01:21:50,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:50,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 01:21:50,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200800686] [2020-12-23 01:21:50,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:21:50,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:50,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:21:50,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:21:50,565 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2020-12-23 01:21:50,852 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-23 01:21:53,026 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-23 01:21:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:55,458 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-23 01:21:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:21:55,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-23 01:21:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:55,461 INFO L225 Difference]: With dead ends: 35 [2020-12-23 01:21:55,462 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 01:21:55,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-12-23 01:21:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 01:21:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2020-12-23 01:21:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:21:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 01:21:55,468 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2020-12-23 01:21:55,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:55,468 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 01:21:55,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:21:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 01:21:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:21:55,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:55,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:55,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:21:55,680 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2020-12-23 01:21:55,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:55,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315137652] [2020-12-23 01:21:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:55,725 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:55,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155291649] [2020-12-23 01:21:55,726 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 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 01:21:55,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:21:55,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:21:55,797 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 01:21:55,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:55,836 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 11 treesize of output 7 [2020-12-23 01:21:55,839 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:55,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:55,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:55,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-12-23 01:21:55,899 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:21:55,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:55,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:55,956 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:55,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:16 [2020-12-23 01:21:56,027 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:21:56,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:56,051 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:56,054 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:56,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:19 [2020-12-23 01:21:56,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:56,229 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 29 treesize of output 24 [2020-12-23 01:21:56,231 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:56,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:56,262 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:56,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2020-12-23 01:21:56,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:56,436 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:56,437 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 42 treesize of output 62 [2020-12-23 01:21:56,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:56,512 INFO L625 ElimStorePlain]: treesize reduction 26, result has 66.7 percent of original size [2020-12-23 01:21:56,523 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:56,523 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:52 [2020-12-23 01:21:56,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:56,779 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:56,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:56,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:56,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:56,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:21:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:56,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315137652] [2020-12-23 01:21:56,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:56,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155291649] [2020-12-23 01:21:56,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:56,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-23 01:21:56,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453301043] [2020-12-23 01:21:56,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 01:21:56,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 01:21:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-23 01:21:56,845 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 14 states. [2020-12-23 01:21:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:58,017 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-12-23 01:21:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:21:58,018 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-12-23 01:21:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:58,019 INFO L225 Difference]: With dead ends: 45 [2020-12-23 01:21:58,019 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 01:21:58,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-12-23 01:21:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 01:21:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2020-12-23 01:21:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 01:21:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-23 01:21:58,029 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-12-23 01:21:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:58,030 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-23 01:21:58,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 01:21:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-23 01:21:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 01:21:58,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:58,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:58,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:21:58,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:58,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1598333292, now seen corresponding path program 5 times [2020-12-23 01:21:58,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:58,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225501249] [2020-12-23 01:21:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:58,266 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:58,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352171261] [2020-12-23 01:21:58,266 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 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 01:21:58,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 01:21:58,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:21:58,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:21:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225501249] [2020-12-23 01:21:58,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352171261] [2020-12-23 01:21:58,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:58,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:21:58,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746301332] [2020-12-23 01:21:58,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:21:58,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:21:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:21:58,445 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-12-23 01:21:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:21:58,664 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 01:21:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 01:21:58,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 01:21:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:21:58,671 INFO L225 Difference]: With dead ends: 76 [2020-12-23 01:21:58,671 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 01:21:58,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:21:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 01:21:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 36. [2020-12-23 01:21:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 01:21:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-23 01:21:58,695 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-12-23 01:21:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:21:58,696 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-23 01:21:58,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:21:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-23 01:21:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:21:58,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:21:58,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:21:58,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 01:21:58,913 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:21:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:21:58,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 1 times [2020-12-23 01:21:58,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:21:58,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681356543] [2020-12-23 01:21:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:21:58,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:21:58,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951181687] [2020-12-23 01:21:58,930 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 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 01:21:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:21:59,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 01:21:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:21:59,054 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 01:21:59,056 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:59,069 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 11 treesize of output 7 [2020-12-23 01:21:59,070 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,076 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:59,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,078 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-12-23 01:21:59,104 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 13 [2020-12-23 01:21:59,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:59,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,114 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:15 [2020-12-23 01:21:59,139 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 13 [2020-12-23 01:21:59,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:59,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:15 [2020-12-23 01:21:59,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:59,220 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 29 treesize of output 24 [2020-12-23 01:21:59,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,229 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 29 treesize of output 24 [2020-12-23 01:21:59,230 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,281 INFO L625 ElimStorePlain]: treesize reduction 42, result has 45.5 percent of original size [2020-12-23 01:21:59,282 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,283 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:35 [2020-12-23 01:21:59,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:59,373 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:59,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:59,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:59,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:59,406 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2020-12-23 01:21:59,407 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:59,413 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2020-12-23 01:21:59,415 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:59,468 INFO L625 ElimStorePlain]: treesize reduction 50, result has 46.2 percent of original size [2020-12-23 01:21:59,472 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 01:21:59,473 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:101, output treesize:43 [2020-12-23 01:21:59,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:59,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:59,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:59,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:59,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:21:59,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:21:59,928 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 01:21:59,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681356543] [2020-12-23 01:21:59,928 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:59,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951181687] [2020-12-23 01:21:59,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:59,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 01:21:59,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380023221] [2020-12-23 01:21:59,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:21:59,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:59,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:21:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:21:59,931 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 16 states. [2020-12-23 01:22:00,967 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-23 01:22:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:22:01,436 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-12-23 01:22:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 01:22:01,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-12-23 01:22:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:22:01,438 INFO L225 Difference]: With dead ends: 64 [2020-12-23 01:22:01,438 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 01:22:01,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2020-12-23 01:22:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 01:22:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-12-23 01:22:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 01:22:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-23 01:22:01,449 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 24 [2020-12-23 01:22:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:22:01,449 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-23 01:22:01,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:22:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-23 01:22:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:22:01,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:22:01,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:22:01,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:22:01,664 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:22:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:22:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 6 times [2020-12-23 01:22:01,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:22:01,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806289263] [2020-12-23 01:22:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:22:01,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:22:01,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094356325] [2020-12-23 01:22:01,697 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 01:22:01,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 01:22:01,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:22:01,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 01:22:01,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:22:01,847 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 11 treesize of output 7 [2020-12-23 01:22:01,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:01,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:01,866 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:01,866 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:22:01,906 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:01,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:01,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:01,924 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:01,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:25 [2020-12-23 01:22:01,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:01,990 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:02,006 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,007 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:25 [2020-12-23 01:22:02,118 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:02,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,155 INFO L625 ElimStorePlain]: treesize reduction 3, result has 89.3 percent of original size [2020-12-23 01:22:02,156 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:25 [2020-12-23 01:22:02,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:02,344 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 20 [2020-12-23 01:22:02,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:02,376 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2020-12-23 01:22:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:02,497 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:02,498 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 42 treesize of output 62 [2020-12-23 01:22:02,501 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,590 INFO L625 ElimStorePlain]: treesize reduction 26, result has 66.7 percent of original size [2020-12-23 01:22:02,591 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,591 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:22:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:02,871 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:02,871 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 3 case distinctions, treesize of input 59 treesize of output 128 [2020-12-23 01:22:02,876 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:02,998 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-23 01:22:02,999 INFO L625 ElimStorePlain]: treesize reduction 52, result has 54.4 percent of original size [2020-12-23 01:22:03,002 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 01:22:03,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:78, output treesize:62 [2020-12-23 01:22:03,963 WARN L197 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 01:22:09,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:22:09,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:22:09,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:22:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:22:09,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806289263] [2020-12-23 01:22:09,061 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:22:09,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094356325] [2020-12-23 01:22:09,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:22:09,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-23 01:22:09,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911069445] [2020-12-23 01:22:09,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 01:22:09,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:22:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 01:22:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=350, Unknown=3, NotChecked=0, Total=420 [2020-12-23 01:22:09,065 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 21 states. [2020-12-23 01:22:25,954 WARN L197 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-23 01:22:28,484 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-12-23 01:22:34,692 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-12-23 01:22:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:22:37,123 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-12-23 01:22:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:22:37,124 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2020-12-23 01:22:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:22:37,125 INFO L225 Difference]: With dead ends: 67 [2020-12-23 01:22:37,125 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 01:22:37,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=299, Invalid=1327, Unknown=14, NotChecked=0, Total=1640 [2020-12-23 01:22:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 01:22:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2020-12-23 01:22:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 01:22:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-23 01:22:37,135 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 24 [2020-12-23 01:22:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:22:37,136 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-23 01:22:37,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 01:22:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-23 01:22:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:22:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:22:37,137 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 01:22:37,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:22:37,338 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:22:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:22:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1581373002, now seen corresponding path program 2 times [2020-12-23 01:22:37,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:22:37,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706861134] [2020-12-23 01:22:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:22:37,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:22:37,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339642823] [2020-12-23 01:22:37,353 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 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 01:22:37,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:22:37,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:22:37,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:22:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:22:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:22:37,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706861134] [2020-12-23 01:22:37,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:22:37,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339642823] [2020-12-23 01:22:37,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:22:37,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:22:37,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437750146] [2020-12-23 01:22:37,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:22:37,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:22:37,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:22:37,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:22:37,509 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 9 states. [2020-12-23 01:22:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:22:37,672 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-23 01:22:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:22:37,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-23 01:22:37,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:22:37,673 INFO L225 Difference]: With dead ends: 87 [2020-12-23 01:22:37,673 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 01:22:37,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:22:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 01:22:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2020-12-23 01:22:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:22:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-23 01:22:37,680 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2020-12-23 01:22:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:22:37,680 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-23 01:22:37,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:22:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-23 01:22:37,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:22:37,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:22:37,681 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:22:37,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 01:22:37,889 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:22:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:22:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2132742960, now seen corresponding path program 7 times [2020-12-23 01:22:37,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:22:37,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53799542] [2020-12-23 01:22:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:22:37,905 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:22:37,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685275356] [2020-12-23 01:22:37,906 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 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 01:22:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:22:37,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:22:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:22:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:22:38,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53799542] [2020-12-23 01:22:38,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:22:38,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685275356] [2020-12-23 01:22:38,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:22:38,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 01:22:38,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890310393] [2020-12-23 01:22:38,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 01:22:38,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:22:38,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 01:22:38,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:22:38,099 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-12-23 01:22:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:22:38,386 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-23 01:22:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 01:22:38,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-23 01:22:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:22:38,387 INFO L225 Difference]: With dead ends: 94 [2020-12-23 01:22:38,388 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 01:22:38,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:22:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 01:22:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 42. [2020-12-23 01:22:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 01:22:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-12-23 01:22:38,398 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 26 [2020-12-23 01:22:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:22:38,399 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-12-23 01:22:38,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 01:22:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-12-23 01:22:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:22:38,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:22:38,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:22:38,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:22:38,611 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:22:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:22:38,612 INFO L82 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 3 times [2020-12-23 01:22:38,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:22:38,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885476512] [2020-12-23 01:22:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:22:38,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:22:38,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809714252] [2020-12-23 01:22:38,625 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 01:22:38,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 01:22:38,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:22:38,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 01:22:38,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:22:38,746 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 11 treesize of output 7 [2020-12-23 01:22:38,747 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:38,757 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,757 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:22:38,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:38,786 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,795 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:38,796 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:19 [2020-12-23 01:22:38,821 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:38,822 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:38,832 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:19 [2020-12-23 01:22:38,863 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:22:38,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:22:38,875 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:19 [2020-12-23 01:22:38,936 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:22:38,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:38,948 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 29 treesize of output 24 [2020-12-23 01:22:38,950 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:38,956 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 29 treesize of output 24 [2020-12-23 01:22:38,957 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,018 INFO L625 ElimStorePlain]: treesize reduction 42, result has 48.1 percent of original size [2020-12-23 01:22:39,019 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,019 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:93, output treesize:39 [2020-12-23 01:22:39,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:22:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,164 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2020-12-23 01:22:39,165 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2020-12-23 01:22:39,177 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,256 INFO L625 ElimStorePlain]: treesize reduction 59, result has 46.8 percent of original size [2020-12-23 01:22:39,262 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,263 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:119, output treesize:52 [2020-12-23 01:22:39,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:22:39,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:22:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,418 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 57 treesize of output 50 [2020-12-23 01:22:39,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:22:39,430 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 57 treesize of output 50 [2020-12-23 01:22:39,431 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:22:39,582 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 01:22:39,582 INFO L625 ElimStorePlain]: treesize reduction 62, result has 51.9 percent of original size [2020-12-23 01:22:39,585 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 01:22:39,585 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:149, output treesize:67 [2020-12-23 01:22:40,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:22:40,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:22:40,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:22:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:22:40,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885476512] [2020-12-23 01:22:40,334 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:22:40,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809714252] [2020-12-23 01:22:40,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:22:40,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-23 01:22:40,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86900395] [2020-12-23 01:22:40,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 01:22:40,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:22:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 01:22:40,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-12-23 01:22:40,336 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 21 states. [2020-12-23 01:22:47,969 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-23 01:22:50,217 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 01:22:52,570 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 01:22:52,853 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 01:22:53,034 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-23 01:22:54,683 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-23 01:22:54,926 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-12-23 01:22:55,155 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-23 01:22:57,413 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 01:22:59,872 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-23 01:22:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:22:59,933 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-12-23 01:22:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 01:22:59,934 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 28 [2020-12-23 01:22:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:22:59,935 INFO L225 Difference]: With dead ends: 93 [2020-12-23 01:22:59,935 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 01:22:59,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=333, Invalid=1558, Unknown=1, NotChecked=0, Total=1892 [2020-12-23 01:22:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 01:22:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 51. [2020-12-23 01:22:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 01:22:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-23 01:22:59,956 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 28 [2020-12-23 01:22:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:22:59,958 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-23 01:22:59,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 01:22:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-23 01:22:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:22:59,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:22:59,959 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:23:00,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:23:00,175 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:23:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:23:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 8 times [2020-12-23 01:23:00,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:23:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603171849] [2020-12-23 01:23:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:23:00,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:23:00,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439300375] [2020-12-23 01:23:00,192 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 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 01:23:00,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:23:00,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:23:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 01:23:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:23:00,324 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 11 treesize of output 7 [2020-12-23 01:23:00,326 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:00,344 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 01:23:00,380 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:00,386 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,399 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:00,400 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,400 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:22 [2020-12-23 01:23:00,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:00,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:00,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:22 [2020-12-23 01:23:00,579 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:00,580 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,594 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:00,597 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,597 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:22 [2020-12-23 01:23:00,685 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:00,687 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,721 INFO L625 ElimStorePlain]: treesize reduction 3, result has 88.9 percent of original size [2020-12-23 01:23:00,722 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:22 [2020-12-23 01:23:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:00,948 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 29 treesize of output 24 [2020-12-23 01:23:00,950 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,978 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:00,979 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:00,979 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2020-12-23 01:23:01,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:01,175 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:01,175 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 42 treesize of output 62 [2020-12-23 01:23:01,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:01,269 INFO L625 ElimStorePlain]: treesize reduction 26, result has 66.7 percent of original size [2020-12-23 01:23:01,271 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:01,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:23:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:01,588 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:01,589 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 3 case distinctions, treesize of input 59 treesize of output 128 [2020-12-23 01:23:01,592 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:01,720 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-12-23 01:23:01,720 INFO L625 ElimStorePlain]: treesize reduction 60, result has 55.2 percent of original size [2020-12-23 01:23:01,722 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 01:23:01,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:74 [2020-12-23 01:23:02,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:02,140 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 01:23:02,140 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:02,140 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 76 treesize of output 210 [2020-12-23 01:23:02,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:02,301 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-23 01:23:02,301 INFO L625 ElimStorePlain]: treesize reduction 82, result has 49.4 percent of original size [2020-12-23 01:23:02,307 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-12-23 01:23:02,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:100, output treesize:80 [2020-12-23 01:23:06,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:06,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:06,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:06,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:06,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:06,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:23:06,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603171849] [2020-12-23 01:23:06,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:23:06,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439300375] [2020-12-23 01:23:06,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:23:06,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-12-23 01:23:06,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536335586] [2020-12-23 01:23:06,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 01:23:06,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:23:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 01:23:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=469, Unknown=2, NotChecked=0, Total=552 [2020-12-23 01:23:06,923 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 24 states. [2020-12-23 01:23:12,628 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-23 01:23:17,368 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-23 01:23:17,738 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-23 01:23:18,075 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-23 01:23:18,297 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-12-23 01:23:18,588 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-23 01:23:20,918 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-23 01:23:25,210 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-23 01:23:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:23:25,219 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-12-23 01:23:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 01:23:25,220 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-12-23 01:23:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:23:25,221 INFO L225 Difference]: With dead ends: 77 [2020-12-23 01:23:25,221 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 01:23:25,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=338, Invalid=2007, Unknown=7, NotChecked=0, Total=2352 [2020-12-23 01:23:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 01:23:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-12-23 01:23:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 01:23:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-23 01:23:25,234 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 28 [2020-12-23 01:23:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:23:25,234 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-23 01:23:25,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 01:23:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-23 01:23:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 01:23:25,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:23:25,235 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:23:25,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 01:23:25,449 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:23:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:23:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1315564812, now seen corresponding path program 9 times [2020-12-23 01:23:25,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:23:25,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611303724] [2020-12-23 01:23:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:23:25,475 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:23:25,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778767940] [2020-12-23 01:23:25,478 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 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 01:23:25,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-23 01:23:25,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:23:25,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:23:25,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:23:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:23:25,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611303724] [2020-12-23 01:23:25,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:23:25,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778767940] [2020-12-23 01:23:25,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:23:25,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 01:23:25,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233348520] [2020-12-23 01:23:25,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:23:25,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:23:25,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:23:25,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:23:25,830 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 13 states. [2020-12-23 01:23:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:23:26,282 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2020-12-23 01:23:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:23:26,283 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-23 01:23:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:23:26,284 INFO L225 Difference]: With dead ends: 130 [2020-12-23 01:23:26,284 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 01:23:26,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:23:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 01:23:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 63. [2020-12-23 01:23:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 01:23:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-12-23 01:23:26,297 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 30 [2020-12-23 01:23:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:23:26,297 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-12-23 01:23:26,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:23:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-12-23 01:23:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:23:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:23:26,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:23:26,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:23:26,514 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:23:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:23:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 4 times [2020-12-23 01:23:26,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:23:26,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516517688] [2020-12-23 01:23:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:23:26,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:23:26,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899643234] [2020-12-23 01:23:26,542 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 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 01:23:26,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:23:26,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:23:26,588 WARN L261 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 01:23:26,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:23:26,603 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 11 treesize of output 7 [2020-12-23 01:23:26,604 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,613 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:26,614 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-12-23 01:23:26,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:26,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:26,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:13 [2020-12-23 01:23:26,669 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:26,670 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:26,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:13 [2020-12-23 01:23:26,713 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:23:26,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:26,725 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:13 [2020-12-23 01:23:26,783 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:26,803 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 29 treesize of output 24 [2020-12-23 01:23:26,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:26,816 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 29 treesize of output 24 [2020-12-23 01:23:26,817 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,890 INFO L625 ElimStorePlain]: treesize reduction 36, result has 47.8 percent of original size [2020-12-23 01:23:26,891 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:26,891 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:81, output treesize:33 [2020-12-23 01:23:27,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:27,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,050 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2020-12-23 01:23:27,052 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:27,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,062 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2020-12-23 01:23:27,064 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:27,159 INFO L625 ElimStorePlain]: treesize reduction 58, result has 46.8 percent of original size [2020-12-23 01:23:27,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:27,160 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:117, output treesize:51 [2020-12-23 01:23:27,319 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:27,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:27,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:27,326 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:27,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,363 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 55 treesize of output 48 [2020-12-23 01:23:27,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:27,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:27,381 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 55 treesize of output 48 [2020-12-23 01:23:27,383 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:27,477 INFO L625 ElimStorePlain]: treesize reduction 63, result has 47.1 percent of original size [2020-12-23 01:23:27,480 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 01:23:27,481 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:127, output treesize:56 [2020-12-23 01:23:28,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:28,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:28,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:28,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:28,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:28,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:23:28,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516517688] [2020-12-23 01:23:28,465 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:23:28,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899643234] [2020-12-23 01:23:28,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:23:28,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-23 01:23:28,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885777114] [2020-12-23 01:23:28,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:23:28,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:23:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:23:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:23:28,467 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 19 states. [2020-12-23 01:23:29,487 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-12-23 01:23:29,697 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-23 01:23:30,074 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 01:23:30,281 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-23 01:23:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:23:30,567 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-12-23 01:23:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 01:23:30,569 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-12-23 01:23:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:23:30,570 INFO L225 Difference]: With dead ends: 100 [2020-12-23 01:23:30,570 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 01:23:30,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-12-23 01:23:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 01:23:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2020-12-23 01:23:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 01:23:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-12-23 01:23:30,596 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 32 [2020-12-23 01:23:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:23:30,598 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-12-23 01:23:30,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:23:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-12-23 01:23:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:23:30,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:23:30,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:23:30,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 01:23:30,807 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:23:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:23:30,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1680698556, now seen corresponding path program 5 times [2020-12-23 01:23:30,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:23:30,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601639017] [2020-12-23 01:23:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:23:30,819 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:23:30,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099066396] [2020-12-23 01:23:30,820 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 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 01:23:30,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-23 01:23:30,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:23:30,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 01:23:30,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:23:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:23:31,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601639017] [2020-12-23 01:23:31,091 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:23:31,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099066396] [2020-12-23 01:23:31,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:23:31,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:23:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447693148] [2020-12-23 01:23:31,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:23:31,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:23:31,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:23:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:23:31,094 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 12 states. [2020-12-23 01:23:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:23:31,403 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-12-23 01:23:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:23:31,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-23 01:23:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:23:31,406 INFO L225 Difference]: With dead ends: 113 [2020-12-23 01:23:31,406 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 01:23:31,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-23 01:23:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 01:23:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 48. [2020-12-23 01:23:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 01:23:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-12-23 01:23:31,415 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 32 [2020-12-23 01:23:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:23:31,415 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-12-23 01:23:31,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:23:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-12-23 01:23:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:23:31,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:23:31,416 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:23:31,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:23:31,630 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:23:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:23:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 6 times [2020-12-23 01:23:31,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:23:31,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191279071] [2020-12-23 01:23:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:23:31,643 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:23:31,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53123787] [2020-12-23 01:23:31,643 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 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 01:23:31,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 01:23:31,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:23:31,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 01:23:31,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:23:31,813 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-23 01:23:31,815 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:31,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:31,832 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:23:31,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:18 [2020-12-23 01:23:31,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:31,890 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 43 treesize of output 34 [2020-12-23 01:23:31,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,046 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-23 01:23:32,047 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,067 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 29 treesize of output 24 [2020-12-23 01:23:32,068 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,080 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 31 treesize of output 26 [2020-12-23 01:23:32,081 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,236 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 01:23:32,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:32,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:23:32,238 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:164, output treesize:150 [2020-12-23 01:23:32,420 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 01:23:32,628 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-23 01:23:32,638 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:32,639 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:23:32,639 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:32,641 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:32,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,649 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:32,650 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,650 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,651 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,651 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:32,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:32,655 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:23:32,656 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:32,657 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,700 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2020-12-23 01:23:32,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,745 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2020-12-23 01:23:32,746 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:32,759 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:32,774 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,784 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:32,785 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,797 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:32,800 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 54 [2020-12-23 01:23:32,848 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,887 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-12-23 01:23:32,889 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,928 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2020-12-23 01:23:32,930 INFO L547 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,941 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:32,942 INFO L547 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:32,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:32,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2020-12-23 01:23:32,994 INFO L547 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:33,007 INFO L547 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,047 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 53 [2020-12-23 01:23:33,049 INFO L547 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2020-12-23 01:23:33,083 INFO L547 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,097 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:33,098 INFO L547 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,131 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2020-12-23 01:23:33,133 INFO L547 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:33,162 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2020-12-23 01:23:33,164 INFO L547 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:33,175 INFO L547 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:33,608 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-23 01:23:33,611 INFO L625 ElimStorePlain]: treesize reduction 84, result has 71.0 percent of original size [2020-12-23 01:23:33,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:23:33,619 INFO L244 ElimStorePlain]: Needed 19 recursive calls to eliminate 1 variables, input treesize:1475, output treesize:206 [2020-12-23 01:23:33,857 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 01:23:33,864 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 10, 1] term [2020-12-23 01:23:33,865 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:23:34,117 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 01:23:34,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:34,124 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:23:34,125 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:34,125 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:34,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:34,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:34,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:23:34,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:34,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:34,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:23:34,132 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:23:34,134 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:23:34,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:23:34,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,158 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,234 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 78 treesize of output 63 [2020-12-23 01:23:34,235 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,300 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 66 treesize of output 55 [2020-12-23 01:23:34,302 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,320 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,336 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,410 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 59 treesize of output 52 [2020-12-23 01:23:34,413 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,429 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,444 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,516 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 57 treesize of output 50 [2020-12-23 01:23:34,518 INFO L547 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,573 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 66 treesize of output 55 [2020-12-23 01:23:34,575 INFO L547 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,591 INFO L547 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,645 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 78 treesize of output 63 [2020-12-23 01:23:34,646 INFO L547 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:34,690 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 75 treesize of output 64 [2020-12-23 01:23:34,692 INFO L547 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:34,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:34,703 INFO L547 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:35,142 WARN L197 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 01:23:35,143 INFO L625 ElimStorePlain]: treesize reduction 94, result has 71.7 percent of original size [2020-12-23 01:23:35,145 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:23:35,145 INFO L244 ElimStorePlain]: Needed 15 recursive calls to eliminate 1 variables, input treesize:1277, output treesize:238 [2020-12-23 01:23:35,412 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 01:23:35,418 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:23:35,762 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 01:23:35,770 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 10, 2, 3, 2, 1] term [2020-12-23 01:23:35,770 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:23:35,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,779 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,780 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,780 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,792 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,799 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,814 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,815 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:23:35,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,834 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:35,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,845 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,852 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:35,864 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:35,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:35,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,890 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:35,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,919 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,925 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:35,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:35,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:35,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:23:35,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:35,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:35,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:35,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,998 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:35,999 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:36,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:36,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:23:36,009 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:23:36,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:36,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:36,027 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:36,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,038 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,048 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,059 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:23:36,065 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:36,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,067 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,071 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,077 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:36,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,087 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,089 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:36,105 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:23:36,106 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:23:36,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,113 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:36,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:36,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:23:36,135 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:23:36,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:23:36,178 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:36,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,373 INFO L244 Elim1Store]: Index analysis took 147 ms [2020-12-23 01:23:36,376 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 79 [2020-12-23 01:23:36,377 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,590 INFO L244 Elim1Store]: Index analysis took 179 ms [2020-12-23 01:23:36,593 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 71 [2020-12-23 01:23:36,595 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:36,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:36,616 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:36,735 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2020-12-23 01:23:36,737 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:36,754 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:23:36,755 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:37,873 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-12-23 01:23:37,874 INFO L625 ElimStorePlain]: treesize reduction 791, result has 28.0 percent of original size [2020-12-23 01:23:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:37,925 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 82 [2020-12-23 01:23:37,929 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:38,225 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-23 01:23:38,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:23:38,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 68 [2020-12-23 01:23:38,265 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-23 01:23:38,491 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 01:23:38,492 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:23:38,507 INFO L547 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 3 dim-2 vars, End of recursive call: 12 dim-0 vars, and 3 xjuncts. [2020-12-23 01:23:38,508 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 15 variables, input treesize:1551, output treesize:297 [2020-12-23 01:23:45,281 WARN L197 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 01:23:46,744 WARN L197 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 104 [2020-12-23 01:23:51,138 WARN L197 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-12-23 01:23:51,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:51,595 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:23:51,597 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:23:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 01:23:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191279071] [2020-12-23 01:23:51,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:23:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53123787] [2020-12-23 01:23:51,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:23:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 01:23:51,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899100192] [2020-12-23 01:23:51,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 01:23:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:23:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 01:23:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=246, Unknown=2, NotChecked=0, Total=306 [2020-12-23 01:23:51,720 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 18 states. [2020-12-23 01:23:52,629 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-23 01:23:53,092 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 01:23:55,718 WARN L197 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-23 01:24:00,327 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 01:24:03,092 WARN L197 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 01:24:07,871 WARN L197 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-23 01:24:12,829 WARN L197 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 139 DAG size of output: 65 [2020-12-23 01:24:39,734 WARN L197 SmtUtils]: Spent 22.66 s on a formula simplification. DAG size of input: 132 DAG size of output: 122 [2020-12-23 01:24:57,984 WARN L197 SmtUtils]: Spent 17.80 s on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-12-23 01:25:06,876 WARN L197 SmtUtils]: Spent 8.40 s on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-12-23 01:25:07,854 WARN L197 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 63 [2020-12-23 01:25:08,532 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-12-23 01:25:29,523 WARN L197 SmtUtils]: Spent 20.51 s on a formula simplification. DAG size of input: 129 DAG size of output: 122 [2020-12-23 01:25:47,493 WARN L197 SmtUtils]: Spent 11.82 s on a formula simplification. DAG size of input: 127 DAG size of output: 120 [2020-12-23 01:25:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:25:47,791 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-12-23 01:25:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 01:25:47,798 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2020-12-23 01:25:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:25:47,799 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:25:47,799 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 01:25:47,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 124.6s TimeCoverageRelationStatistics Valid=241, Invalid=939, Unknown=10, NotChecked=0, Total=1190 [2020-12-23 01:25:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 01:25:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-23 01:25:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 01:25:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 01:25:47,812 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2020-12-23 01:25:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:25:47,813 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 01:25:47,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 01:25:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 01:25:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:25:47,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:25:47,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:25:48,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 01:25:48,015 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:25:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:25:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1112184374, now seen corresponding path program 10 times [2020-12-23 01:25:48,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:25:48,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122235592] [2020-12-23 01:25:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:25:48,028 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:25:48,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264737416] [2020-12-23 01:25:48,028 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 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 01:25:48,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:25:48,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:25:48,107 WARN L261 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 01:25:48,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:25:48,169 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 11 treesize of output 7 [2020-12-23 01:25:48,173 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:48,209 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-12-23 01:25:48,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:25:48,281 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:48,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:16 [2020-12-23 01:25:48,432 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:25:48,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,471 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:48,473 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:16 [2020-12-23 01:25:48,645 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:25:48,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:48,682 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,683 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:16 [2020-12-23 01:25:48,881 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:25:48,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:48,922 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:48,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:16 [2020-12-23 01:25:49,157 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-12-23 01:25:49,160 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:49,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:49,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:49,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:19 [2020-12-23 01:25:49,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:25:49,703 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 29 treesize of output 24 [2020-12-23 01:25:49,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:49,815 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 01:25:49,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:49,820 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:49,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:35 [2020-12-23 01:25:50,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:25:50,410 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:50,410 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 38 treesize of output 62 [2020-12-23 01:25:50,416 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:50,676 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-23 01:25:50,678 INFO L625 ElimStorePlain]: treesize reduction 26, result has 64.9 percent of original size [2020-12-23 01:25:50,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:25:50,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:52, output treesize:48 [2020-12-23 01:25:50,978 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-23 01:25:51,309 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 01:25:51,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:25:51,574 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-23 01:25:51,576 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:51,577 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 3 case distinctions, treesize of input 55 treesize of output 128 [2020-12-23 01:25:51,582 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:51,961 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-12-23 01:25:51,963 INFO L625 ElimStorePlain]: treesize reduction 52, result has 54.4 percent of original size [2020-12-23 01:25:51,966 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 01:25:51,967 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:62 [2020-12-23 01:25:52,306 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 01:25:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:25:53,149 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 01:25:53,151 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:53,152 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 64 treesize of output 210 [2020-12-23 01:25:53,159 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:53,680 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-23 01:25:53,683 INFO L625 ElimStorePlain]: treesize reduction 82, result has 49.4 percent of original size [2020-12-23 01:25:53,688 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 01:25:53,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:88, output treesize:80 [2020-12-23 01:25:54,112 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-23 01:25:54,555 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 01:25:54,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:25:55,335 WARN L197 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-23 01:25:55,337 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:25:55,337 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 77 treesize of output 308 [2020-12-23 01:25:55,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:25:55,904 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-23 01:25:55,905 INFO L625 ElimStorePlain]: treesize reduction 128, result has 44.3 percent of original size [2020-12-23 01:25:55,914 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-12-23 01:25:55,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:106, output treesize:102