/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-crafted/zero_sum_const3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 00:48:32,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 00:48:32,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 00:48:32,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 00:48:32,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 00:48:32,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 00:48:32,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 00:48:32,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 00:48:32,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 00:48:32,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 00:48:32,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 00:48:32,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 00:48:32,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 00:48:32,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 00:48:32,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 00:48:32,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 00:48:32,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 00:48:32,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 00:48:32,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 00:48:32,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 00:48:32,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 00:48:32,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 00:48:32,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 00:48:32,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 00:48:32,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 00:48:32,960 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 00:48:33,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 00:48:33,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 00:48:33,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 00:48:33,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 00:48:33,021 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 00:48:33,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 00:48:33,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 00:48:33,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 00:48:33,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 00:48:33,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 00:48:33,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 00:48:33,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 00:48:33,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 00:48:33,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 00:48:33,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 00:48:33,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 00:48:33,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 00:48:33,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 00:48:33,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 00:48:33,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 00:48:33,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 00:48:33,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 00:48:33,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 00:48:33,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 00:48:33,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 00:48:33,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 00:48:33,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 00:48:33,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 00:48:33,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 00:48:33,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 00:48:33,471 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 00:48:33,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const3.c [2020-12-23 00:48:33,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a2cd333b1/0f40a16e213d496ea67ef8dd57451a15/FLAG9f1f770d0 [2020-12-23 00:48:34,143 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 00:48:34,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const3.c [2020-12-23 00:48:34,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a2cd333b1/0f40a16e213d496ea67ef8dd57451a15/FLAG9f1f770d0 [2020-12-23 00:48:34,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a2cd333b1/0f40a16e213d496ea67ef8dd57451a15 [2020-12-23 00:48:34,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 00:48:34,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 00:48:34,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 00:48:34,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 00:48:34,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 00:48:34,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e98a588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34, skipping insertion in model container [2020-12-23 00:48:34,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 00:48:34,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 00:48:34,718 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-crafted/zero_sum_const3.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 00:48:34,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:48:34,756 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 00:48:34,771 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-crafted/zero_sum_const3.c[406,419] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 00:48:34,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:48:34,800 INFO L208 MainTranslator]: Completed translation [2020-12-23 00:48:34,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34 WrapperNode [2020-12-23 00:48:34,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 00:48:34,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 00:48:34,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 00:48:34,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 00:48:34,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 00:48:34,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 00:48:34,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 00:48:34,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 00:48:34,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (1/1) ... [2020-12-23 00:48:34,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 00:48:34,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 00:48:34,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 00:48:34,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 00:48:34,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (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 00:48:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 00:48:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 00:48:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 00:48:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 00:48:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 00:48:34,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 00:48:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 00:48:35,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 00:48:35,316 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 00:48:35,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:48:35 BoogieIcfgContainer [2020-12-23 00:48:35,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 00:48:35,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 00:48:35,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 00:48:35,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 00:48:35,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:48:34" (1/3) ... [2020-12-23 00:48:35,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50695b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:48:35, skipping insertion in model container [2020-12-23 00:48:35,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:48:34" (2/3) ... [2020-12-23 00:48:35,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50695b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:48:35, skipping insertion in model container [2020-12-23 00:48:35,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:48:35" (3/3) ... [2020-12-23 00:48:35,345 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2020-12-23 00:48:35,367 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 00:48:35,383 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 00:48:35,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 00:48:35,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 00:48:35,490 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 00:48:35,490 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 00:48:35,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 00:48:35,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 00:48:35,491 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 00:48:35,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 00:48:35,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 00:48:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-23 00:48:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 00:48:35,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:35,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:35,522 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 534528496, now seen corresponding path program 1 times [2020-12-23 00:48:35,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:35,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807085771] [2020-12-23 00:48:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:35,734 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 00:48:35,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807085771] [2020-12-23 00:48:35,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:48:35,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 00:48:35,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109750555] [2020-12-23 00:48:35,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 00:48:35,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 00:48:35,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 00:48:35,766 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-23 00:48:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:35,791 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2020-12-23 00:48:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 00:48:35,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-12-23 00:48:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:35,804 INFO L225 Difference]: With dead ends: 57 [2020-12-23 00:48:35,805 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 00:48:35,808 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 00:48:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 00:48:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 00:48:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 00:48:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-12-23 00:48:35,856 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2020-12-23 00:48:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:35,857 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-12-23 00:48:35,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 00:48:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-12-23 00:48:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 00:48:35,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:35,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:35,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 00:48:35,859 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash -697412484, now seen corresponding path program 1 times [2020-12-23 00:48:35,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:35,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109068452] [2020-12-23 00:48:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:35,987 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 00:48:35,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109068452] [2020-12-23 00:48:35,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:48:35,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 00:48:35,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160816997] [2020-12-23 00:48:35,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 00:48:35,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 00:48:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 00:48:36,001 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 3 states. [2020-12-23 00:48:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:36,095 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-12-23 00:48:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 00:48:36,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 00:48:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:36,096 INFO L225 Difference]: With dead ends: 51 [2020-12-23 00:48:36,097 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 00:48:36,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 00:48:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 00:48:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-12-23 00:48:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 00:48:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-23 00:48:36,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2020-12-23 00:48:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:36,106 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-23 00:48:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 00:48:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-23 00:48:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 00:48:36,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:36,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:36,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 00:48:36,108 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash -506383970, now seen corresponding path program 1 times [2020-12-23 00:48:36,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:36,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466012532] [2020-12-23 00:48:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 00:48:36,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466012532] [2020-12-23 00:48:36,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:48:36,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 00:48:36,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768072494] [2020-12-23 00:48:36,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 00:48:36,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:36,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 00:48:36,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:48:36,179 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-12-23 00:48:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:36,335 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2020-12-23 00:48:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 00:48:36,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-23 00:48:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:36,339 INFO L225 Difference]: With dead ends: 60 [2020-12-23 00:48:36,339 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 00:48:36,341 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 00:48:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 00:48:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-12-23 00:48:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 00:48:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-12-23 00:48:36,357 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2020-12-23 00:48:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:36,358 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-12-23 00:48:36,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 00:48:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-12-23 00:48:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 00:48:36,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:36,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:36,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 00:48:36,360 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 615846698, now seen corresponding path program 1 times [2020-12-23 00:48:36,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:36,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777011766] [2020-12-23 00:48:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 00:48:36,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777011766] [2020-12-23 00:48:36,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940700840] [2020-12-23 00:48:36,458 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 00:48:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:36,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:48:36,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 00:48:36,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:36,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-23 00:48:36,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125655673] [2020-12-23 00:48:36,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 00:48:36,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 00:48:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 00:48:36,731 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-12-23 00:48:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:36,876 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-12-23 00:48:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 00:48:36,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-12-23 00:48:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:36,878 INFO L225 Difference]: With dead ends: 65 [2020-12-23 00:48:36,879 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 00:48:36,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 00:48:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 00:48:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-23 00:48:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 00:48:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-12-23 00:48:36,906 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2020-12-23 00:48:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:36,907 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-12-23 00:48:36,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 00:48:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-12-23 00:48:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 00:48:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:36,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:37,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:48:37,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:37,126 INFO L82 PathProgramCache]: Analyzing trace with hash -160084788, now seen corresponding path program 2 times [2020-12-23 00:48:37,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:37,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090663427] [2020-12-23 00:48:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 00:48:37,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090663427] [2020-12-23 00:48:37,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413602455] [2020-12-23 00:48:37,260 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 00:48:37,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 00:48:37,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:48:37,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:48:37,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 00:48:37,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:37,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-23 00:48:37,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871522669] [2020-12-23 00:48:37,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 00:48:37,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 00:48:37,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-23 00:48:37,401 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2020-12-23 00:48:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:37,544 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2020-12-23 00:48:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 00:48:37,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-23 00:48:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:37,545 INFO L225 Difference]: With dead ends: 79 [2020-12-23 00:48:37,546 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 00:48:37,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-12-23 00:48:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 00:48:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-12-23 00:48:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 00:48:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-12-23 00:48:37,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2020-12-23 00:48:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:37,553 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-12-23 00:48:37,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 00:48:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-12-23 00:48:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 00:48:37,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:37,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:37,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:48:37,771 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1337652904, now seen corresponding path program 3 times [2020-12-23 00:48:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:37,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763719812] [2020-12-23 00:48:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:48:38,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763719812] [2020-12-23 00:48:38,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618188997] [2020-12-23 00:48:38,994 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 00:48:39,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 00:48:39,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:48:39,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 69 conjunts are in the unsatisfiable core [2020-12-23 00:48:39,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:39,168 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 00:48:39,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:48:39,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:48:39,181 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:39,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2020-12-23 00:48:41,024 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:48:41,025 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 57 [2020-12-23 00:48:41,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:41,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:48:41,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:48:41,039 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:48:41,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:48:41,041 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:41,078 INFO L625 ElimStorePlain]: treesize reduction 22, result has 61.4 percent of original size [2020-12-23 00:48:41,080 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:41,082 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:41,083 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:34 [2020-12-23 00:48:41,165 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:41,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:48:41,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:48:41,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:41,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 37 [2020-12-23 00:48:41,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835923349] [2020-12-23 00:48:41,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 00:48:41,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:41,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 00:48:41,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 00:48:41,371 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 37 states. [2020-12-23 00:48:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:44,592 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-12-23 00:48:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 00:48:44,593 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 47 [2020-12-23 00:48:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:44,595 INFO L225 Difference]: With dead ends: 131 [2020-12-23 00:48:44,595 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 00:48:44,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 31 SyntacticMatches, 16 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=278, Invalid=2692, Unknown=0, NotChecked=0, Total=2970 [2020-12-23 00:48:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 00:48:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 77. [2020-12-23 00:48:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 00:48:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-12-23 00:48:44,610 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2020-12-23 00:48:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:44,610 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-12-23 00:48:44,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 00:48:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-12-23 00:48:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 00:48:44,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:44,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:44,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:48:44,826 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1235984134, now seen corresponding path program 4 times [2020-12-23 00:48:44,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:44,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590080339] [2020-12-23 00:48:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 00:48:44,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590080339] [2020-12-23 00:48:44,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786539826] [2020-12-23 00:48:44,959 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 00:48:45,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 00:48:45,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:48:45,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 00:48:45,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 00:48:45,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:45,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 00:48:45,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119703548] [2020-12-23 00:48:45,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 00:48:45,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 00:48:45,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-23 00:48:45,151 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 13 states. [2020-12-23 00:48:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:45,492 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2020-12-23 00:48:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 00:48:45,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-23 00:48:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:45,494 INFO L225 Difference]: With dead ends: 177 [2020-12-23 00:48:45,494 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 00:48:45,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-12-23 00:48:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 00:48:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2020-12-23 00:48:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 00:48:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-12-23 00:48:45,508 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 49 [2020-12-23 00:48:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:45,509 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-12-23 00:48:45,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 00:48:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-12-23 00:48:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 00:48:45,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:45,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:45,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:48:45,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -925733540, now seen corresponding path program 5 times [2020-12-23 00:48:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:45,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951850274] [2020-12-23 00:48:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-23 00:48:45,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951850274] [2020-12-23 00:48:45,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232403814] [2020-12-23 00:48:45,846 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 00:48:45,945 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 00:48:45,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:48:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 00:48:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-23 00:48:46,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:46,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 00:48:46,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842724909] [2020-12-23 00:48:46,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 00:48:46,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:46,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 00:48:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-12-23 00:48:46,071 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 13 states. [2020-12-23 00:48:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:48:46,416 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-12-23 00:48:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 00:48:46,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-12-23 00:48:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:48:46,417 INFO L225 Difference]: With dead ends: 96 [2020-12-23 00:48:46,418 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 00:48:46,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-12-23 00:48:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 00:48:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-12-23 00:48:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 00:48:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-23 00:48:46,427 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51 [2020-12-23 00:48:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:48:46,427 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-23 00:48:46,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 00:48:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-23 00:48:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 00:48:46,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:48:46,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:48:46,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:48:46,643 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:48:46,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:48:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1781065978, now seen corresponding path program 6 times [2020-12-23 00:48:46,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:48:46,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829809933] [2020-12-23 00:48:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:48:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:48:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:48:51,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829809933] [2020-12-23 00:48:51,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781223787] [2020-12-23 00:48:51,625 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 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 00:48:51,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 00:48:51,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:48:51,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-23 00:48:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:48:51,895 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 00:48:51,896 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:48:51,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:48:51,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:51,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-23 00:48:52,082 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-23 00:48:52,083 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 23 treesize of output 22 [2020-12-23 00:48:52,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:48:52,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:48:52,093 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:52,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 00:48:55,911 INFO L348 Elim1Store]: treesize reduction 29, result has 67.0 percent of original size [2020-12-23 00:48:55,911 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 73 [2020-12-23 00:48:55,914 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-23 00:48:55,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:48:55,916 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 00:48:55,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:55,917 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:48:55,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:48:55,920 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 00:48:55,932 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2020-12-23 00:48:55,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:48:55,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:3 [2020-12-23 00:48:55,997 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:48:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:48:56,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:48:56,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28] total 75 [2020-12-23 00:48:56,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434401935] [2020-12-23 00:48:56,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-23 00:48:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:48:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-23 00:48:56,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5235, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 00:48:56,154 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 75 states. [2020-12-23 00:48:57,557 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-12-23 00:48:57,844 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-23 00:48:58,330 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-12-23 00:48:58,834 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 30 [2020-12-23 00:48:59,316 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-12-23 00:48:59,792 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 35 [2020-12-23 00:49:00,028 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2020-12-23 00:49:00,342 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-12-23 00:49:00,608 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 29 [2020-12-23 00:49:00,953 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2020-12-23 00:49:01,585 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2020-12-23 00:49:03,001 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2020-12-23 00:49:03,284 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 00:49:05,594 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2020-12-23 00:49:07,714 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 30 [2020-12-23 00:49:08,062 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 30 [2020-12-23 00:49:08,438 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 25 [2020-12-23 00:49:08,857 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2020-12-23 00:49:11,844 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2020-12-23 00:49:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:49:12,146 INFO L93 Difference]: Finished difference Result 230 states and 258 transitions. [2020-12-23 00:49:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-23 00:49:12,147 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 61 [2020-12-23 00:49:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:49:12,149 INFO L225 Difference]: With dead ends: 230 [2020-12-23 00:49:12,149 INFO L226 Difference]: Without dead ends: 208 [2020-12-23 00:49:12,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 31 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=1088, Invalid=13432, Unknown=0, NotChecked=0, Total=14520 [2020-12-23 00:49:12,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-23 00:49:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 140. [2020-12-23 00:49:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-23 00:49:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2020-12-23 00:49:12,175 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 61 [2020-12-23 00:49:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:49:12,176 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2020-12-23 00:49:12,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-23 00:49:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2020-12-23 00:49:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 00:49:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:49:12,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:49:12,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:49:12,390 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:49:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:49:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2140781352, now seen corresponding path program 7 times [2020-12-23 00:49:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:49:12,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715097436] [2020-12-23 00:49:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:49:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:49:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 00:49:12,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715097436] [2020-12-23 00:49:12,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193982343] [2020-12-23 00:49:12,507 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 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 00:49:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:49:12,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 00:49:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:49:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 00:49:12,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:49:12,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 00:49:12,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779232347] [2020-12-23 00:49:12,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 00:49:12,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:49:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 00:49:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 00:49:12,735 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand 16 states. [2020-12-23 00:49:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:49:13,308 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2020-12-23 00:49:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 00:49:13,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-12-23 00:49:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:49:13,310 INFO L225 Difference]: With dead ends: 255 [2020-12-23 00:49:13,310 INFO L226 Difference]: Without dead ends: 126 [2020-12-23 00:49:13,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-12-23 00:49:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-23 00:49:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2020-12-23 00:49:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 00:49:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2020-12-23 00:49:13,324 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 63 [2020-12-23 00:49:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:49:13,325 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2020-12-23 00:49:13,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 00:49:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2020-12-23 00:49:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 00:49:13,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:49:13,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:49:13,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 00:49:13,541 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:49:13,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:49:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash 156775434, now seen corresponding path program 8 times [2020-12-23 00:49:13,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:49:13,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944260689] [2020-12-23 00:49:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:49:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:49:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-23 00:49:13,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944260689] [2020-12-23 00:49:13,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077050386] [2020-12-23 00:49:13,652 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 00:49:13,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 00:49:13,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:49:13,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 00:49:13,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:49:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-23 00:49:13,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:49:13,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 00:49:13,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495927047] [2020-12-23 00:49:13,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 00:49:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:49:13,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 00:49:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-12-23 00:49:13,929 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 16 states. [2020-12-23 00:49:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:49:14,462 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-12-23 00:49:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 00:49:14,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-12-23 00:49:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:49:14,464 INFO L225 Difference]: With dead ends: 118 [2020-12-23 00:49:14,464 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 00:49:14,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-12-23 00:49:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 00:49:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-12-23 00:49:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 00:49:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-12-23 00:49:14,474 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2020-12-23 00:49:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:49:14,474 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-12-23 00:49:14,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 00:49:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-12-23 00:49:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 00:49:14,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:49:14,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:49:14,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 00:49:14,689 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:49:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:49:14,690 INFO L82 PathProgramCache]: Analyzing trace with hash 958143540, now seen corresponding path program 9 times [2020-12-23 00:49:14,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:49:14,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570300692] [2020-12-23 00:49:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:49:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:49:16,177 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-12-23 00:49:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:49:23,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570300692] [2020-12-23 00:49:23,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353339547] [2020-12-23 00:49:23,250 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 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 00:49:23,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 00:49:23,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:49:23,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 121 conjunts are in the unsatisfiable core [2020-12-23 00:49:23,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:49:23,596 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 00:49:23,597 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:49:23,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:49:23,606 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:49:23,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2020-12-23 00:49:23,872 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 00:49:23,872 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 28 treesize of output 27 [2020-12-23 00:49:23,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:49:23,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:49:23,887 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:49:23,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2020-12-23 00:49:30,908 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-12-23 00:49:30,909 INFO L348 Elim1Store]: treesize reduction 51, result has 80.1 percent of original size [2020-12-23 00:49:30,910 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 228 [2020-12-23 00:49:30,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 00:49:30,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:30,919 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,925 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,929 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:30,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 00:49:30,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:30,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,948 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,948 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,950 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,953 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:30,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:30,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:30,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,979 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:30,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:30,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:30,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,995 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 00:49:30,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:30,996 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:30,997 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,002 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,007 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,010 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,013 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,015 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,017 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:31,018 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,023 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 00:49:31,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,025 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 00:49:31,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 00:49:31,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,036 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,039 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:49:31,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,051 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 00:49:31,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,053 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 00:49:31,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,057 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 00:49:31,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,060 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,062 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 00:49:31,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,063 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,065 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,067 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 00:49:31,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:49:31,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,074 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,122 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 5 xjuncts. [2020-12-23 00:49:31,363 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 25 [2020-12-23 00:49:31,364 INFO L625 ElimStorePlain]: treesize reduction 1477, result has 2.5 percent of original size [2020-12-23 00:49:31,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:49:31,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:128, output treesize:24 [2020-12-23 00:49:31,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:31,833 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:49:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 104 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 00:49:32,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:49:32,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 29] total 90 [2020-12-23 00:49:32,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383621661] [2020-12-23 00:49:32,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-12-23 00:49:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:49:32,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-12-23 00:49:32,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=7610, Unknown=0, NotChecked=0, Total=8010 [2020-12-23 00:49:32,076 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 90 states. [2020-12-23 00:49:37,636 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2020-12-23 00:49:38,788 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-12-23 00:49:40,072 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2020-12-23 00:49:40,784 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-12-23 00:49:41,321 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2020-12-23 00:49:42,038 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2020-12-23 00:49:42,759 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 59 [2020-12-23 00:49:43,654 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2020-12-23 00:49:44,341 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2020-12-23 00:49:45,146 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 11 [2020-12-23 00:49:46,437 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2020-12-23 00:49:47,270 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2020-12-23 00:49:48,128 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2020-12-23 00:49:48,575 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 33 [2020-12-23 00:49:50,423 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-12-23 00:49:50,712 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 12 [2020-12-23 00:49:51,528 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2020-12-23 00:49:51,862 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 12 [2020-12-23 00:49:52,411 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2020-12-23 00:49:53,495 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 11 [2020-12-23 00:49:54,392 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 75 [2020-12-23 00:49:54,877 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-12-23 00:49:55,349 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2020-12-23 00:49:55,754 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2020-12-23 00:49:56,651 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 37 [2020-12-23 00:49:57,196 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-12-23 00:49:57,722 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 39 [2020-12-23 00:49:58,671 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2020-12-23 00:49:59,087 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 31 [2020-12-23 00:49:59,649 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2020-12-23 00:50:00,257 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 47 [2020-12-23 00:50:00,816 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-12-23 00:50:01,341 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 46 [2020-12-23 00:50:01,909 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-12-23 00:50:02,436 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2020-12-23 00:50:02,992 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-12-23 00:50:03,514 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2020-12-23 00:50:04,019 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-23 00:50:04,531 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2020-12-23 00:50:05,326 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 62 [2020-12-23 00:50:08,405 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2020-12-23 00:50:09,482 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 38 [2020-12-23 00:50:10,003 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2020-12-23 00:50:10,805 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2020-12-23 00:50:11,597 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2020-12-23 00:50:12,049 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2020-12-23 00:50:12,711 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-12-23 00:50:13,329 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 43 [2020-12-23 00:50:13,957 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2020-12-23 00:50:14,574 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 44 [2020-12-23 00:50:15,148 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 00:50:15,720 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 39 [2020-12-23 00:50:16,394 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-23 00:50:16,973 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-12-23 00:50:19,673 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-12-23 00:50:20,284 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-12-23 00:50:21,306 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 79 [2020-12-23 00:50:25,378 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 36 [2020-12-23 00:50:32,471 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 34 [2020-12-23 00:50:33,022 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-23 00:50:33,753 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-12-23 00:50:34,515 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2020-12-23 00:50:35,425 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-12-23 00:50:36,294 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2020-12-23 00:50:37,048 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-23 00:50:37,931 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-12-23 00:50:38,706 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-23 00:50:44,594 WARN L197 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2020-12-23 00:50:49,339 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-23 00:50:50,707 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 39 [2020-12-23 00:50:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:50:50,713 INFO L93 Difference]: Finished difference Result 332 states and 366 transitions. [2020-12-23 00:50:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-12-23 00:50:50,715 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 75 [2020-12-23 00:50:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:50:50,718 INFO L225 Difference]: With dead ends: 332 [2020-12-23 00:50:50,719 INFO L226 Difference]: Without dead ends: 302 [2020-12-23 00:50:50,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 42 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10171 ImplicationChecksByTransitivity, 63.8s TimeCoverageRelationStatistics Valid=2137, Invalid=33769, Unknown=4, NotChecked=0, Total=35910 [2020-12-23 00:50:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-12-23 00:50:50,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 180. [2020-12-23 00:50:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-23 00:50:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 199 transitions. [2020-12-23 00:50:50,753 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 199 transitions. Word has length 75 [2020-12-23 00:50:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:50:50,754 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 199 transitions. [2020-12-23 00:50:50,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-12-23 00:50:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 199 transitions. [2020-12-23 00:50:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 00:50:50,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:50:50,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:50:50,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:50:50,972 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:50:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:50:50,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1706175702, now seen corresponding path program 10 times [2020-12-23 00:50:50,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:50:50,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278116231] [2020-12-23 00:50:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:50:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:50:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-23 00:50:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278116231] [2020-12-23 00:50:51,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280352695] [2020-12-23 00:50:51,273 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 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 00:50:51,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 00:50:51,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:50:51,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 00:50:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:50:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-23 00:50:51,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:50:51,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 00:50:51,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984969017] [2020-12-23 00:50:51,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 00:50:51,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:50:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 00:50:51,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 00:50:51,879 INFO L87 Difference]: Start difference. First operand 180 states and 199 transitions. Second operand 19 states. [2020-12-23 00:50:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:50:53,148 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2020-12-23 00:50:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 00:50:53,150 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2020-12-23 00:50:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:50:53,152 INFO L225 Difference]: With dead ends: 305 [2020-12-23 00:50:53,152 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 00:50:53,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-23 00:50:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 00:50:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2020-12-23 00:50:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-23 00:50:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2020-12-23 00:50:53,167 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 77 [2020-12-23 00:50:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:50:53,167 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2020-12-23 00:50:53,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 00:50:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2020-12-23 00:50:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 00:50:53,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:50:53,168 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:50:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:50:53,371 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:50:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:50:53,372 INFO L82 PathProgramCache]: Analyzing trace with hash 587280952, now seen corresponding path program 11 times [2020-12-23 00:50:53,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:50:53,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643221166] [2020-12-23 00:50:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:50:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:50:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-12-23 00:50:53,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643221166] [2020-12-23 00:50:53,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841683834] [2020-12-23 00:50:53,658 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 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 00:50:53,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-23 00:50:53,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:50:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 00:50:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:50:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-12-23 00:50:54,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:50:54,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 00:50:54,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685938134] [2020-12-23 00:50:54,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 00:50:54,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:50:54,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 00:50:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-23 00:50:54,428 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 19 states. [2020-12-23 00:50:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:50:55,973 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-12-23 00:50:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 00:50:55,976 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2020-12-23 00:50:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:50:55,977 INFO L225 Difference]: With dead ends: 140 [2020-12-23 00:50:55,977 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 00:50:55,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-12-23 00:50:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 00:50:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-12-23 00:50:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 00:50:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-12-23 00:50:55,989 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 79 [2020-12-23 00:50:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:50:55,989 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-12-23 00:50:55,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 00:50:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-12-23 00:50:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-23 00:50:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:50:55,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:50:56,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 00:50:56,206 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:50:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:50:56,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1296238366, now seen corresponding path program 12 times [2020-12-23 00:50:56,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:50:56,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448657448] [2020-12-23 00:50:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:50:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:50:57,707 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-12-23 00:50:57,886 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 00:50:58,073 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-12-23 00:50:58,214 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-12-23 00:50:58,363 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-23 00:50:58,531 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-23 00:50:58,813 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-12-23 00:50:59,080 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-12-23 00:50:59,328 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-12-23 00:50:59,578 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-12-23 00:50:59,825 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-23 00:51:00,105 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 00:51:00,365 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 00:51:00,598 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-23 00:51:00,826 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-23 00:51:01,089 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-23 00:51:01,339 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-23 00:51:01,677 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-23 00:51:01,984 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-23 00:51:02,277 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 00:51:02,575 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-12-23 00:51:02,900 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-12-23 00:51:03,156 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 00:51:03,446 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 00:51:03,760 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 00:51:04,102 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-23 00:51:04,363 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-23 00:51:04,617 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-12-23 00:51:04,869 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 00:51:05,178 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-12-23 00:51:05,487 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-23 00:51:05,782 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-23 00:51:06,078 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-12-23 00:51:06,549 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-23 00:51:06,979 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-23 00:51:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:51:16,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448657448] [2020-12-23 00:51:16,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141033868] [2020-12-23 00:51:16,430 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 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 00:51:16,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 00:51:16,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:51:16,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 146 conjunts are in the unsatisfiable core [2020-12-23 00:51:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:51:17,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 00:51:17,592 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 00:51:17,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:51:17,618 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:51:17,618 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-12-23 00:51:33,988 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 00:51:33,989 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2020-12-23 00:51:33,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:51:33,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:51:33,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 00:51:34,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 00:51:34,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:51:34,006 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-12-23 00:51:34,166 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-12-23 00:51:34,169 INFO L625 ElimStorePlain]: treesize reduction 26, result has 59.4 percent of original size [2020-12-23 00:51:34,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:51:34,176 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 00:51:34,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:74, output treesize:24 [2020-12-23 00:51:34,702 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:51:35,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 00:51:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 3 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 00:51:35,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 00:51:35,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 33] total 108 [2020-12-23 00:51:35,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364423095] [2020-12-23 00:51:35,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 108 states [2020-12-23 00:51:35,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:51:35,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2020-12-23 00:51:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=10911, Unknown=0, NotChecked=0, Total=11556 [2020-12-23 00:51:35,665 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 108 states. [2020-12-23 00:51:36,738 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 12 [2020-12-23 00:51:37,389 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2020-12-23 00:51:39,443 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-23 00:51:40,133 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-23 00:51:41,104 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 00:51:42,013 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-12-23 00:51:42,983 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2020-12-23 00:51:43,988 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2020-12-23 00:51:45,234 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-12-23 00:51:46,565 WARN L197 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2020-12-23 00:51:47,745 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2020-12-23 00:51:48,489 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 00:51:49,599 WARN L197 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-12-23 00:51:50,568 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 00:51:51,714 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2020-12-23 00:51:52,854 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2020-12-23 00:51:53,704 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-23 00:51:54,423 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-12-23 00:51:55,534 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2020-12-23 00:51:56,234 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-23 00:51:57,070 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-23 00:51:57,936 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2020-12-23 00:51:59,057 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2020-12-23 00:51:59,876 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2020-12-23 00:52:00,857 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 00:52:01,736 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2020-12-23 00:52:03,352 WARN L197 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-12-23 00:52:04,424 WARN L197 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2020-12-23 00:52:05,912 WARN L197 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-12-23 00:52:06,881 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 52 [2020-12-23 00:52:08,119 WARN L197 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2020-12-23 00:52:09,538 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2020-12-23 00:52:10,670 WARN L197 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2020-12-23 00:52:12,090 WARN L197 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 58 [2020-12-23 00:52:13,251 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2020-12-23 00:52:14,337 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2020-12-23 00:52:15,621 WARN L197 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2020-12-23 00:52:16,718 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2020-12-23 00:52:17,342 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 3 [2020-12-23 00:52:18,741 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 60 [2020-12-23 00:52:19,706 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-23 00:52:21,284 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 59 [2020-12-23 00:52:22,571 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2020-12-23 00:52:23,239 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 7 [2020-12-23 00:52:24,166 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2020-12-23 00:52:25,234 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2020-12-23 00:52:26,343 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2020-12-23 00:52:27,455 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2020-12-23 00:52:28,398 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 30 [2020-12-23 00:52:29,462 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 50 [2020-12-23 00:52:30,542 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2020-12-23 00:52:31,292 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 34 [2020-12-23 00:52:32,380 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2020-12-23 00:52:33,562 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2020-12-23 00:52:34,226 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 37 [2020-12-23 00:52:35,041 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 61 [2020-12-23 00:52:36,304 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 67 [2020-12-23 00:52:36,832 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 9 [2020-12-23 00:52:37,692 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2020-12-23 00:52:39,021 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 61 [2020-12-23 00:52:39,635 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 9 [2020-12-23 00:52:40,539 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 57 [2020-12-23 00:52:41,710 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-12-23 00:52:42,910 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 71 [2020-12-23 00:52:43,994 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 76 [2020-12-23 00:52:44,551 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 8 [2020-12-23 00:52:45,778 WARN L197 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 67 [2020-12-23 00:52:47,209 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-12-23 00:52:48,331 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-12-23 00:52:49,143 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47