/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-178dd20 [2021-01-06 10:42:17,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:42:17,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:42:17,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:42:17,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:42:17,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:42:17,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:42:17,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:42:17,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:42:17,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:42:17,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:42:17,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:42:17,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:42:17,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:42:17,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:42:17,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:42:17,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:42:17,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:42:17,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:42:17,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:42:17,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:42:17,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:42:17,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:42:17,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:42:17,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:42:17,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:42:17,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:42:17,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:42:17,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 10:42:17,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:42:17,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:42:17,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:42:17,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:42:17,753 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:42:17,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:42:17,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:42:17,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:42:17,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:42:17,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:42:17,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:42:17,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:42:17,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:42:17,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:42:17,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:42:17,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:42:17,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:42:17,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:42:17,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:42:17,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:42:17,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:42:17,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:42:17,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:42:17,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:42:17,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:42:17,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:42:18,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:42:18,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:42:18,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:42:18,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:42:18,280 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:42:18,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const3.c [2021-01-06 10:42:18,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5b500e19/0b8a25271a0e4b589a0853446f4e6860/FLAG0c0ae1eac [2021-01-06 10:42:18,992 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:42:18,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const3.c [2021-01-06 10:42:19,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5b500e19/0b8a25271a0e4b589a0853446f4e6860/FLAG0c0ae1eac [2021-01-06 10:42:19,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5b500e19/0b8a25271a0e4b589a0853446f4e6860 [2021-01-06 10:42:19,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:42:19,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:42:19,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:42:19,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:42:19,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:42:19,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc1f9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19, skipping insertion in model container [2021-01-06 10:42:19,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:42:19,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:42:19,558 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,] [2021-01-06 10:42:19,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:42:19,597 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:42:19,610 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,] [2021-01-06 10:42:19,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:42:19,642 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:42:19,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19 WrapperNode [2021-01-06 10:42:19,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:42:19,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:42:19,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:42:19,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:42:19,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:42:19,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:42:19,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:42:19,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:42:19,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (1/1) ... [2021-01-06 10:42:19,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:42:19,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:42:19,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:42:19,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:42:19,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (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 [2021-01-06 10:42:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 10:42:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:42:19,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:42:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:42:20,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:42:20,428 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 10:42:20,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:42:20 BoogieIcfgContainer [2021-01-06 10:42:20,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:42:20,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:42:20,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:42:20,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:42:20,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:42:19" (1/3) ... [2021-01-06 10:42:20,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e738b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:42:20, skipping insertion in model container [2021-01-06 10:42:20,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:42:19" (2/3) ... [2021-01-06 10:42:20,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e738b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:42:20, skipping insertion in model container [2021-01-06 10:42:20,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:42:20" (3/3) ... [2021-01-06 10:42:20,446 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2021-01-06 10:42:20,457 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:42:20,462 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:42:20,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:42:20,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:42:20,535 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:42:20,535 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:42:20,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:42:20,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:42:20,535 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:42:20,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:42:20,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:42:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-01-06 10:42:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 10:42:20,566 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:20,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:42:20,567 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 534528496, now seen corresponding path program 1 times [2021-01-06 10:42:20,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:20,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701099844] [2021-01-06 10:42:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:20,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701099844] [2021-01-06 10:42:20,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:42:20,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:42:20,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121865404] [2021-01-06 10:42:20,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:42:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:42:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:42:20,890 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2021-01-06 10:42:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:20,916 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2021-01-06 10:42:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:42:20,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2021-01-06 10:42:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:20,933 INFO L225 Difference]: With dead ends: 57 [2021-01-06 10:42:20,934 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:42:20,942 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 [2021-01-06 10:42:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:42:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 10:42:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 10:42:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-01-06 10:42:20,998 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2021-01-06 10:42:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:20,999 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-01-06 10:42:20,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:42:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-01-06 10:42:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 10:42:21,002 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:21,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:42:21,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:42:21,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash -697412484, now seen corresponding path program 1 times [2021-01-06 10:42:21,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:21,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269440256] [2021-01-06 10:42:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:21,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269440256] [2021-01-06 10:42:21,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:42:21,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:42:21,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581292063] [2021-01-06 10:42:21,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:42:21,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:21,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:42:21,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:42:21,103 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 3 states. [2021-01-06 10:42:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:21,183 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-01-06 10:42:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:42:21,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 10:42:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:21,185 INFO L225 Difference]: With dead ends: 51 [2021-01-06 10:42:21,185 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 10:42:21,186 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 [2021-01-06 10:42:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 10:42:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-01-06 10:42:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 10:42:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-01-06 10:42:21,193 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2021-01-06 10:42:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:21,194 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-01-06 10:42:21,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:42:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-01-06 10:42:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 10:42:21,195 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:21,195 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] [2021-01-06 10:42:21,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 10:42:21,196 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash -506383970, now seen corresponding path program 1 times [2021-01-06 10:42:21,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:21,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562037905] [2021-01-06 10:42:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:42:21,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562037905] [2021-01-06 10:42:21,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:42:21,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:42:21,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848232291] [2021-01-06 10:42:21,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:42:21,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:21,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:42:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:42:21,261 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2021-01-06 10:42:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:21,367 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2021-01-06 10:42:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:42:21,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-01-06 10:42:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:21,369 INFO L225 Difference]: With dead ends: 60 [2021-01-06 10:42:21,369 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 10:42:21,371 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 [2021-01-06 10:42:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 10:42:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-01-06 10:42:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 10:42:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-01-06 10:42:21,379 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2021-01-06 10:42:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:21,379 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-01-06 10:42:21,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:42:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-01-06 10:42:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 10:42:21,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:21,381 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] [2021-01-06 10:42:21,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 10:42:21,382 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:21,383 INFO L82 PathProgramCache]: Analyzing trace with hash 615846698, now seen corresponding path program 1 times [2021-01-06 10:42:21,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:21,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105850454] [2021-01-06 10:42:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 10:42:21,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105850454] [2021-01-06 10:42:21,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060259270] [2021-01-06 10:42:21,509 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 [2021-01-06 10:42:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:21,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:42:21,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 10:42:21,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:21,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-01-06 10:42:21,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336141137] [2021-01-06 10:42:21,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 10:42:21,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 10:42:21,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:42:21,716 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2021-01-06 10:42:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:21,830 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-01-06 10:42:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:42:21,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-01-06 10:42:21,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:21,832 INFO L225 Difference]: With dead ends: 65 [2021-01-06 10:42:21,832 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 10:42:21,833 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 [2021-01-06 10:42:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 10:42:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-01-06 10:42:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 10:42:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-01-06 10:42:21,841 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2021-01-06 10:42:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:21,841 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-01-06 10:42:21,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 10:42:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-01-06 10:42:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 10:42:21,843 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:21,843 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] [2021-01-06 10:42:22,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:22,057 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -160084788, now seen corresponding path program 2 times [2021-01-06 10:42:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711342164] [2021-01-06 10:42:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 10:42:22,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711342164] [2021-01-06 10:42:22,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700059760] [2021-01-06 10:42:22,221 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 [2021-01-06 10:42:22,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:42:22,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:22,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:42:22,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 10:42:22,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:22,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-06 10:42:22,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461024593] [2021-01-06 10:42:22,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 10:42:22,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 10:42:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:42:22,361 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2021-01-06 10:42:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:22,520 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2021-01-06 10:42:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 10:42:22,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2021-01-06 10:42:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:22,522 INFO L225 Difference]: With dead ends: 79 [2021-01-06 10:42:22,522 INFO L226 Difference]: Without dead ends: 55 [2021-01-06 10:42:22,523 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 [2021-01-06 10:42:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-06 10:42:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-01-06 10:42:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 10:42:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-01-06 10:42:22,532 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2021-01-06 10:42:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:22,533 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-01-06 10:42:22,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 10:42:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-01-06 10:42:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 10:42:22,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:22,535 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] [2021-01-06 10:42:22,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:22,751 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:22,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1337652904, now seen corresponding path program 3 times [2021-01-06 10:42:22,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:22,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818882610] [2021-01-06 10:42:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:24,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818882610] [2021-01-06 10:42:24,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32081067] [2021-01-06 10:42:24,017 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 [2021-01-06 10:42:24,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 10:42:24,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:24,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 69 conjunts are in the unsatisfiable core [2021-01-06 10:42:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:24,235 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 [2021-01-06 10:42:24,240 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:42:24,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:42:24,253 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:24,254 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-06 10:42:26,167 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:42:26,168 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 [2021-01-06 10:42:26,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:26,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:42:26,176 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:42:26,182 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:42:26,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:42:26,184 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:26,224 INFO L625 ElimStorePlain]: treesize reduction 22, result has 61.4 percent of original size [2021-01-06 10:42:26,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:26,230 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:26,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:55, output treesize:34 [2021-01-06 10:42:26,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:26,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:42:26,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:26,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:26,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 37 [2021-01-06 10:42:26,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031371761] [2021-01-06 10:42:26,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-06 10:42:26,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:26,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-06 10:42:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 10:42:26,536 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 37 states. [2021-01-06 10:42:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:29,988 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2021-01-06 10:42:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 10:42:29,989 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 47 [2021-01-06 10:42:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:29,991 INFO L225 Difference]: With dead ends: 131 [2021-01-06 10:42:29,991 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 10:42:29,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 31 SyntacticMatches, 16 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=278, Invalid=2692, Unknown=0, NotChecked=0, Total=2970 [2021-01-06 10:42:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 10:42:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 77. [2021-01-06 10:42:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 10:42:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2021-01-06 10:42:30,008 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2021-01-06 10:42:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:30,008 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2021-01-06 10:42:30,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-06 10:42:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2021-01-06 10:42:30,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-06 10:42:30,010 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:30,010 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] [2021-01-06 10:42:30,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:30,224 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1235984134, now seen corresponding path program 4 times [2021-01-06 10:42:30,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:30,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966664416] [2021-01-06 10:42:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 10:42:30,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966664416] [2021-01-06 10:42:30,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253867280] [2021-01-06 10:42:30,320 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 [2021-01-06 10:42:30,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:42:30,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:30,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:42:30,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 10:42:30,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:30,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-01-06 10:42:30,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424518386] [2021-01-06 10:42:30,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 10:42:30,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:30,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 10:42:30,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-01-06 10:42:30,558 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 13 states. [2021-01-06 10:42:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:30,983 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2021-01-06 10:42:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 10:42:30,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2021-01-06 10:42:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:30,985 INFO L225 Difference]: With dead ends: 177 [2021-01-06 10:42:30,985 INFO L226 Difference]: Without dead ends: 104 [2021-01-06 10:42:30,986 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 [2021-01-06 10:42:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-01-06 10:42:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2021-01-06 10:42:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 10:42:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-01-06 10:42:30,999 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 49 [2021-01-06 10:42:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:31,000 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-01-06 10:42:31,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 10:42:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-01-06 10:42:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 10:42:31,001 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:31,001 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] [2021-01-06 10:42:31,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:31,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash -925733540, now seen corresponding path program 5 times [2021-01-06 10:42:31,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:31,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728817119] [2021-01-06 10:42:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-01-06 10:42:31,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728817119] [2021-01-06 10:42:31,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556194941] [2021-01-06 10:42:31,318 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 [2021-01-06 10:42:31,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 10:42:31,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:31,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:42:31,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-01-06 10:42:31,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:31,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-01-06 10:42:31,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338974250] [2021-01-06 10:42:31,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 10:42:31,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 10:42:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-01-06 10:42:31,554 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 13 states. [2021-01-06 10:42:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:31,938 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-01-06 10:42:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:42:31,939 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2021-01-06 10:42:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:31,942 INFO L225 Difference]: With dead ends: 96 [2021-01-06 10:42:31,942 INFO L226 Difference]: Without dead ends: 68 [2021-01-06 10:42:31,944 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 [2021-01-06 10:42:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-06 10:42:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2021-01-06 10:42:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-06 10:42:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-01-06 10:42:31,969 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51 [2021-01-06 10:42:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:31,970 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-01-06 10:42:31,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 10:42:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-01-06 10:42:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 10:42:31,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:31,976 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] [2021-01-06 10:42:32,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:32,177 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1781065978, now seen corresponding path program 6 times [2021-01-06 10:42:32,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:32,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829461446] [2021-01-06 10:42:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:37,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829461446] [2021-01-06 10:42:37,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518763605] [2021-01-06 10:42:37,504 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 [2021-01-06 10:42:37,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-06 10:42:37,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:37,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 90 conjunts are in the unsatisfiable core [2021-01-06 10:42:37,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:37,770 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 [2021-01-06 10:42:37,771 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:42:37,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:42:37,778 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:37,779 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-06 10:42:37,980 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:42:37,981 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 [2021-01-06 10:42:37,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:42:37,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:42:37,995 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:37,996 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2021-01-06 10:42:41,914 INFO L348 Elim1Store]: treesize reduction 29, result has 67.0 percent of original size [2021-01-06 10:42:41,915 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 [2021-01-06 10:42:41,918 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2021-01-06 10:42:41,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:42:41,919 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2021-01-06 10:42:41,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:41,920 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:42:41,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:42:41,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-06 10:42:41,937 INFO L625 ElimStorePlain]: treesize reduction 7, result has 58.8 percent of original size [2021-01-06 10:42:41,939 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:42:41,939 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:62, output treesize:3 [2021-01-06 10:42:42,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:42:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:42:42,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:42,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28] total 75 [2021-01-06 10:42:42,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833997873] [2021-01-06 10:42:42,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-01-06 10:42:42,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:42,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-01-06 10:42:42,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5235, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 10:42:42,174 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 75 states. [2021-01-06 10:42:43,710 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2021-01-06 10:42:44,015 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2021-01-06 10:42:44,518 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-01-06 10:42:45,051 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 30 [2021-01-06 10:42:45,551 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2021-01-06 10:42:46,052 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 35 [2021-01-06 10:42:46,291 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2021-01-06 10:42:46,614 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2021-01-06 10:42:46,905 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 29 [2021-01-06 10:42:47,250 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2021-01-06 10:42:47,507 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 28 [2021-01-06 10:42:47,913 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2021-01-06 10:42:49,306 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2021-01-06 10:42:49,595 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-01-06 10:42:51,837 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2021-01-06 10:42:54,274 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 30 [2021-01-06 10:42:54,637 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 25 [2021-01-06 10:42:55,039 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2021-01-06 10:42:57,816 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2021-01-06 10:42:58,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:58,077 INFO L93 Difference]: Finished difference Result 230 states and 258 transitions. [2021-01-06 10:42:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-06 10:42:58,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 61 [2021-01-06 10:42:58,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:58,080 INFO L225 Difference]: With dead ends: 230 [2021-01-06 10:42:58,080 INFO L226 Difference]: Without dead ends: 208 [2021-01-06 10:42:58,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 31 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=1088, Invalid=13432, Unknown=0, NotChecked=0, Total=14520 [2021-01-06 10:42:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-01-06 10:42:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 140. [2021-01-06 10:42:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-01-06 10:42:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2021-01-06 10:42:58,114 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 61 [2021-01-06 10:42:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:58,115 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2021-01-06 10:42:58,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2021-01-06 10:42:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2021-01-06 10:42:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 10:42:58,122 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:58,123 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] [2021-01-06 10:42:58,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:42:58,337 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:58,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2140781352, now seen corresponding path program 7 times [2021-01-06 10:42:58,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:58,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186695630] [2021-01-06 10:42:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-06 10:42:58,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186695630] [2021-01-06 10:42:58,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674563208] [2021-01-06 10:42:58,470 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 [2021-01-06 10:42:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:58,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:42:58,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-06 10:42:58,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:58,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-01-06 10:42:58,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753570341] [2021-01-06 10:42:58,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 10:42:58,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 10:42:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 10:42:58,718 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand 16 states. [2021-01-06 10:42:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:42:59,201 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2021-01-06 10:42:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 10:42:59,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2021-01-06 10:42:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:42:59,203 INFO L225 Difference]: With dead ends: 255 [2021-01-06 10:42:59,203 INFO L226 Difference]: Without dead ends: 126 [2021-01-06 10:42:59,205 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 [2021-01-06 10:42:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-01-06 10:42:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2021-01-06 10:42:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-06 10:42:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2021-01-06 10:42:59,218 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 63 [2021-01-06 10:42:59,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:42:59,218 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2021-01-06 10:42:59,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 10:42:59,218 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2021-01-06 10:42:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 10:42:59,219 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:42:59,219 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] [2021-01-06 10:42:59,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 10:42:59,420 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:42:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:42:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash 156775434, now seen corresponding path program 8 times [2021-01-06 10:42:59,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:42:59,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824780200] [2021-01-06 10:42:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:42:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:42:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-06 10:42:59,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824780200] [2021-01-06 10:42:59,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171403900] [2021-01-06 10:42:59,540 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 [2021-01-06 10:42:59,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:42:59,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:42:59,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:42:59,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:42:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-06 10:42:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:42:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-01-06 10:42:59,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874704507] [2021-01-06 10:42:59,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 10:42:59,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:42:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 10:42:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-01-06 10:42:59,760 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand 16 states. [2021-01-06 10:43:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:43:00,321 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2021-01-06 10:43:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 10:43:00,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2021-01-06 10:43:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:43:00,323 INFO L225 Difference]: With dead ends: 118 [2021-01-06 10:43:00,323 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 10:43:00,324 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 [2021-01-06 10:43:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 10:43:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-01-06 10:43:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 10:43:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2021-01-06 10:43:00,333 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2021-01-06 10:43:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:43:00,333 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2021-01-06 10:43:00,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 10:43:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2021-01-06 10:43:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 10:43:00,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:43:00,334 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] [2021-01-06 10:43:00,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 10:43:00,549 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:43:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:43:00,550 INFO L82 PathProgramCache]: Analyzing trace with hash 958143540, now seen corresponding path program 9 times [2021-01-06 10:43:00,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:43:00,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322088623] [2021-01-06 10:43:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:43:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:43:02,180 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2021-01-06 10:43:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:43:09,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322088623] [2021-01-06 10:43:09,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965784676] [2021-01-06 10:43:09,207 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 [2021-01-06 10:43:09,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 10:43:09,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:43:09,316 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 121 conjunts are in the unsatisfiable core [2021-01-06 10:43:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:43:09,551 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 [2021-01-06 10:43:09,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:43:09,561 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:43:09,562 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:43:09,563 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2021-01-06 10:43:09,855 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-01-06 10:43:09,855 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 [2021-01-06 10:43:09,857 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:43:09,870 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:43:09,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:43:09,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2021-01-06 10:43:17,356 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-01-06 10:43:17,357 INFO L348 Elim1Store]: treesize reduction 51, result has 80.1 percent of original size [2021-01-06 10:43:17,358 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 [2021-01-06 10:43:17,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:43:17,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,381 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,381 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,385 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,387 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,388 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,391 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:43:17,391 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,392 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,397 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,398 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,403 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,404 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,407 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,408 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,410 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,414 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,416 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,437 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,440 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,441 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,449 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,455 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2021-01-06 10:43:17,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,456 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,457 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,459 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,462 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,463 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,465 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,465 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,469 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,469 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,472 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,477 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2021-01-06 10:43:17,477 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,478 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,480 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,481 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:43:17,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:43:17,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,484 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,486 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,490 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,491 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:43:17,495 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,497 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2021-01-06 10:43:17,498 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,499 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2021-01-06 10:43:17,500 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,502 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 10:43:17,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,507 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 10:43:17,508 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,509 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,511 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,513 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 10:43:17,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:43:17,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,517 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,522 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 5 xjuncts. [2021-01-06 10:43:17,805 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 25 [2021-01-06 10:43:17,806 INFO L625 ElimStorePlain]: treesize reduction 1477, result has 2.5 percent of original size [2021-01-06 10:43:17,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:17,811 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:43:17,811 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:128, output treesize:24 [2021-01-06 10:43:18,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:18,273 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:43:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 104 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:43:18,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:43:18,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 29] total 90 [2021-01-06 10:43:18,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621984432] [2021-01-06 10:43:18,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-01-06 10:43:18,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:43:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-01-06 10:43:18,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=7610, Unknown=0, NotChecked=0, Total=8010 [2021-01-06 10:43:18,537 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 90 states. [2021-01-06 10:43:24,048 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2021-01-06 10:43:25,192 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2021-01-06 10:43:25,893 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2021-01-06 10:43:26,457 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-01-06 10:43:27,156 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-01-06 10:43:27,728 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2021-01-06 10:43:28,467 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2021-01-06 10:43:29,150 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 59 [2021-01-06 10:43:30,018 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2021-01-06 10:43:30,696 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2021-01-06 10:43:31,487 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 11 [2021-01-06 10:43:32,814 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2021-01-06 10:43:33,687 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2021-01-06 10:43:34,568 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2021-01-06 10:43:35,047 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 33 [2021-01-06 10:43:37,017 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2021-01-06 10:43:37,330 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 12 [2021-01-06 10:43:38,203 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-01-06 10:43:38,541 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 12 [2021-01-06 10:43:39,091 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-01-06 10:43:40,230 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 11 [2021-01-06 10:43:41,208 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 75 [2021-01-06 10:43:41,718 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2021-01-06 10:43:42,199 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2021-01-06 10:43:42,617 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 42 [2021-01-06 10:43:43,579 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 37 [2021-01-06 10:43:44,148 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2021-01-06 10:43:44,708 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 39 [2021-01-06 10:43:45,715 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-01-06 10:43:46,165 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 31 [2021-01-06 10:43:46,746 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2021-01-06 10:43:47,440 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 47 [2021-01-06 10:43:48,013 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-01-06 10:43:48,598 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 46 [2021-01-06 10:43:49,263 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2021-01-06 10:43:49,825 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2021-01-06 10:43:50,417 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-01-06 10:43:50,956 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 40 [2021-01-06 10:43:51,484 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-01-06 10:43:52,009 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2021-01-06 10:43:52,819 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 62 [2021-01-06 10:43:55,919 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2021-01-06 10:43:56,959 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 38 [2021-01-06 10:43:57,509 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2021-01-06 10:43:58,331 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2021-01-06 10:43:59,209 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-01-06 10:43:59,695 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2021-01-06 10:44:00,439 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-01-06 10:44:01,111 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 43 [2021-01-06 10:44:01,794 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2021-01-06 10:44:02,489 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 44 [2021-01-06 10:44:03,116 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-01-06 10:44:03,740 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 39 [2021-01-06 10:44:04,476 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-01-06 10:44:05,120 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2021-01-06 10:44:05,941 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-01-06 10:44:06,643 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2021-01-06 10:44:07,741 WARN L197 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 79 [2021-01-06 10:44:10,818 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 36 [2021-01-06 10:44:17,859 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 34 [2021-01-06 10:44:18,487 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-01-06 10:44:19,293 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2021-01-06 10:44:20,116 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-01-06 10:44:21,073 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2021-01-06 10:44:22,032 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2021-01-06 10:44:22,855 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-01-06 10:44:23,826 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-01-06 10:44:24,691 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-01-06 10:44:31,300 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2021-01-06 10:44:36,430 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-01-06 10:44:37,886 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 39 [2021-01-06 10:44:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:44:37,893 INFO L93 Difference]: Finished difference Result 332 states and 366 transitions. [2021-01-06 10:44:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-01-06 10:44:37,896 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 75 [2021-01-06 10:44:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:44:37,899 INFO L225 Difference]: With dead ends: 332 [2021-01-06 10:44:37,899 INFO L226 Difference]: Without dead ends: 302 [2021-01-06 10:44:37,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 42 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10171 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=2138, Invalid=33770, Unknown=2, NotChecked=0, Total=35910 [2021-01-06 10:44:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-01-06 10:44:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 180. [2021-01-06 10:44:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-01-06 10:44:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 199 transitions. [2021-01-06 10:44:37,930 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 199 transitions. Word has length 75 [2021-01-06 10:44:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:44:37,931 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 199 transitions. [2021-01-06 10:44:37,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2021-01-06 10:44:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 199 transitions. [2021-01-06 10:44:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 10:44:37,932 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:44:37,933 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] [2021-01-06 10:44:38,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:44:38,147 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:44:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:44:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1706175702, now seen corresponding path program 10 times [2021-01-06 10:44:38,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:44:38,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614954704] [2021-01-06 10:44:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:44:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:44:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-01-06 10:44:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614954704] [2021-01-06 10:44:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194071017] [2021-01-06 10:44:38,433 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 [2021-01-06 10:44:38,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:44:38,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:44:38,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 10:44:38,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:44:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-01-06 10:44:39,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:44:39,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-01-06 10:44:39,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341102223] [2021-01-06 10:44:39,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 10:44:39,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:44:39,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 10:44:39,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:44:39,130 INFO L87 Difference]: Start difference. First operand 180 states and 199 transitions. Second operand 19 states. [2021-01-06 10:44:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:44:40,513 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2021-01-06 10:44:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 10:44:40,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2021-01-06 10:44:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:44:40,517 INFO L225 Difference]: With dead ends: 305 [2021-01-06 10:44:40,517 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 10:44:40,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-01-06 10:44:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 10:44:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2021-01-06 10:44:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-01-06 10:44:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2021-01-06 10:44:40,534 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 77 [2021-01-06 10:44:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:44:40,534 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2021-01-06 10:44:40,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 10:44:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2021-01-06 10:44:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 10:44:40,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:44:40,535 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] [2021-01-06 10:44:40,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:44:40,737 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:44:40,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:44:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash 587280952, now seen corresponding path program 11 times [2021-01-06 10:44:40,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:44:40,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74158547] [2021-01-06 10:44:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:44:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:44:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-01-06 10:44:41,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74158547] [2021-01-06 10:44:41,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115391674] [2021-01-06 10:44:41,029 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 [2021-01-06 10:44:41,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 10:44:41,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:44:41,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 10:44:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:44:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-01-06 10:44:41,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:44:41,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-01-06 10:44:41,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549918034] [2021-01-06 10:44:41,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 10:44:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:44:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 10:44:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:44:41,807 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand 19 states. [2021-01-06 10:44:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:44:43,522 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2021-01-06 10:44:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 10:44:43,524 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2021-01-06 10:44:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:44:43,525 INFO L225 Difference]: With dead ends: 140 [2021-01-06 10:44:43,525 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 10:44:43,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2021-01-06 10:44:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 10:44:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-01-06 10:44:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 10:44:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-01-06 10:44:43,538 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 79 [2021-01-06 10:44:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:44:43,538 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-01-06 10:44:43,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 10:44:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-01-06 10:44:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-01-06 10:44:43,539 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:44:43,539 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] [2021-01-06 10:44:43,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 10:44:43,740 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:44:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:44:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1296238366, now seen corresponding path program 12 times [2021-01-06 10:44:43,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:44:43,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94875447] [2021-01-06 10:44:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:44:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:44:44,866 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-01-06 10:44:45,011 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-01-06 10:44:45,149 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-01-06 10:44:45,323 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-01-06 10:44:45,532 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-01-06 10:44:45,701 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2021-01-06 10:44:45,858 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-01-06 10:44:46,044 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-01-06 10:44:46,312 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2021-01-06 10:44:46,641 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2021-01-06 10:44:46,922 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2021-01-06 10:44:47,215 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-01-06 10:44:47,550 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-01-06 10:44:47,880 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-01-06 10:44:48,142 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-01-06 10:44:48,415 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-06 10:44:48,675 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-06 10:44:48,943 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 10:44:49,204 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-01-06 10:44:49,519 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-01-06 10:44:49,883 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-01-06 10:44:50,203 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-01-06 10:44:50,544 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-01-06 10:44:50,947 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-06 10:44:51,297 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-06 10:44:51,628 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-06 10:44:52,022 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-06 10:44:52,393 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-06 10:44:52,665 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-01-06 10:44:52,924 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-01-06 10:44:53,221 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-01-06 10:44:53,612 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2021-01-06 10:44:53,959 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-01-06 10:44:54,284 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-01-06 10:44:54,725 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-01-06 10:44:55,065 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-01-06 10:44:55,389 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-01-06 10:44:55,997 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-01-06 10:44:59,852 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-01-06 10:45:00,210 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-01-06 10:45:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:45:06,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94875447] [2021-01-06 10:45:06,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448422819] [2021-01-06 10:45:06,926 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 [2021-01-06 10:45:07,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-06 10:45:07,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:45:07,061 WARN L261 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 146 conjunts are in the unsatisfiable core [2021-01-06 10:45:07,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:45:08,260 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 [2021-01-06 10:45:08,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:45:08,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:45:08,299 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:45:08,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-06 10:45:27,818 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:45:27,819 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 [2021-01-06 10:45:27,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:45:27,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:45:27,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:45:27,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:45:27,845 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:45:27,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-01-06 10:45:28,058 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-01-06 10:45:28,060 INFO L625 ElimStorePlain]: treesize reduction 26, result has 59.4 percent of original size [2021-01-06 10:45:28,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:45:28,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:45:28,070 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:74, output treesize:24 [2021-01-06 10:45:28,684 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:45:29,237 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:45:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 3 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:45:29,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:45:29,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 33] total 108 [2021-01-06 10:45:29,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981944669] [2021-01-06 10:45:29,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-01-06 10:45:29,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:45:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-01-06 10:45:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=10911, Unknown=0, NotChecked=0, Total=11556 [2021-01-06 10:45:29,777 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 108 states. [2021-01-06 10:45:30,918 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 12 [2021-01-06 10:45:31,709 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2021-01-06 10:45:32,496 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-01-06 10:45:33,442 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-01-06 10:45:34,892 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-01-06 10:45:36,156 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2021-01-06 10:45:37,221 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2021-01-06 10:45:38,443 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2021-01-06 10:45:39,560 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2021-01-06 10:45:41,130 WARN L197 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-01-06 10:45:42,677 WARN L197 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-01-06 10:45:44,094 WARN L197 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2021-01-06 10:45:44,856 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-01-06 10:45:45,845 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-01-06 10:45:46,761 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2021-01-06 10:45:47,818 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2021-01-06 10:45:48,907 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2021-01-06 10:45:49,634 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-01-06 10:45:50,293 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2021-01-06 10:45:51,273 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2021-01-06 10:45:51,919 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-01-06 10:45:52,688 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2021-01-06 10:45:53,470 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2021-01-06 10:45:54,499 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2021-01-06 10:45:55,265 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2021-01-06 10:45:56,144 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-01-06 10:45:56,906 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2021-01-06 10:45:58,361 WARN L197 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-01-06 10:45:59,266 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2021-01-06 10:46:00,528 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2021-01-06 10:46:01,403 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 52 [2021-01-06 10:46:02,559 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2021-01-06 10:46:03,955 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2021-01-06 10:46:05,078 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2021-01-06 10:46:06,347 WARN L197 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 58 [2021-01-06 10:46:07,412 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2021-01-06 10:46:08,380 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2021-01-06 10:46:09,494 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2021-01-06 10:46:10,485 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-01-06 10:46:11,086 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 3 [2021-01-06 10:46:12,328 WARN L197 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 60 [2021-01-06 10:46:13,193 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-01-06 10:46:14,596 WARN L197 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 59 [2021-01-06 10:46:15,745 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-01-06 10:46:16,335 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 7 [2021-01-06 10:46:17,120 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2021-01-06 10:46:18,005 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-01-06 10:46:18,931 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2021-01-06 10:46:19,831 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2021-01-06 10:46:20,682 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 30 [2021-01-06 10:46:21,571 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 50 [2021-01-06 10:46:23,056 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-01-06 10:46:23,701 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 34 [2021-01-06 10:46:24,626 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2021-01-06 10:46:25,641 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2021-01-06 10:46:26,369 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 37