/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/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:01:00,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:01:00,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:01:00,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:01:00,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:01:00,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:01:00,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:01:00,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:01:01,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:01:01,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:01:01,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:01:01,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:01:01,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:01:01,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:01:01,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:01:01,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:01:01,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:01:01,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:01:01,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:01:01,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:01:01,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:01:01,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:01:01,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:01:01,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:01:01,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:01:01,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:01:01,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:01:01,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:01:01,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:01:01,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:01:01,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:01:01,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:01:01,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:01:01,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:01:01,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:01:01,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:01:01,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:01:01,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:01:01,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:01:01,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:01:01,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:01:01,145 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:01:01,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:01:01,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:01:01,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:01:01,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:01:01,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:01:01,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:01:01,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:01:01,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:01:01,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:01:01,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:01:01,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:01:01,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:01:01,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:01:01,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:01:01,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:01:01,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:01:01,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:01:01,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:01:01,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:01:01,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:01:01,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:01:01,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:01:01,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:01:01,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:01:01,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:01:01,644 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:01:01,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/indexer.i [2020-12-23 13:01:01,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/13f8ad027/a8062775583149a8a0d1934ccc8dd298/FLAG6f0648c4b [2020-12-23 13:01:02,544 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:01:02,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread/indexer.i [2020-12-23 13:01:02,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/13f8ad027/a8062775583149a8a0d1934ccc8dd298/FLAG6f0648c4b [2020-12-23 13:01:02,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/13f8ad027/a8062775583149a8a0d1934ccc8dd298 [2020-12-23 13:01:02,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:01:02,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:01:02,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:01:02,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:01:02,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:01:02,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:01:02" (1/1) ... [2020-12-23 13:01:02,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f88977b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:02, skipping insertion in model container [2020-12-23 13:01:02,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:01:02" (1/1) ... [2020-12-23 13:01:02,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:01:02,895 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~tab,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~tab,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~h,]]]]] left hand side expression in assignment: lhs: VariableLHS[~ret_val~0,] left hand side expression in assignment: lhs: VariableLHS[~tid~0,] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] [2020-12-23 13:01:03,446 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/pthread/indexer.i[47556,47569] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~arg~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 13:01:03,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:01:03,525 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~tab,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~tab,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~h,]]]]] left hand side expression in assignment: lhs: VariableLHS[~ret_val~0,] left hand side expression in assignment: lhs: VariableLHS[~tid~0,] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] [2020-12-23 13:01:03,609 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/pthread/indexer.i[47556,47569] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: IdentifierExpression[~#arg~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 13:01:03,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:01:03,831 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:01:03,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03 WrapperNode [2020-12-23 13:01:03,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:01:03,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:01:03,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:01:03,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:01:03,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:01:03,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:01:03,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:01:03,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:01:03,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... [2020-12-23 13:01:03,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:01:03,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:01:03,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:01:03,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:01:03,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 13:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-12-23 13:01:04,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-12-23 13:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-23 13:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:01:04,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:01:04,101 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:01:04,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:01:04,685 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 13:01:04,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:01:04 BoogieIcfgContainer [2020-12-23 13:01:04,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:01:04,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:01:04,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:01:04,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:01:04,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:01:02" (1/3) ... [2020-12-23 13:01:04,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e08926d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:01:04, skipping insertion in model container [2020-12-23 13:01:04,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:03" (2/3) ... [2020-12-23 13:01:04,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e08926d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:01:04, skipping insertion in model container [2020-12-23 13:01:04,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:01:04" (3/3) ... [2020-12-23 13:01:04,696 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-12-23 13:01:04,704 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:01:04,704 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:01:04,710 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:01:04,711 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:01:04,748 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,748 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,749 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,749 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,749 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,749 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,752 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,752 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,752 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,752 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,753 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,753 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,753 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,753 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,754 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,754 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,754 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,755 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,755 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,755 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,757 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,757 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,758 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,759 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,760 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,760 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,761 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,761 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,762 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,762 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,762 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,763 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,763 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,763 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,763 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,764 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,764 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,764 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,764 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,765 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,765 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,765 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,765 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,766 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,769 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,769 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,769 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,770 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,771 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,771 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,771 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,771 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,771 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,772 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,772 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,772 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,772 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,773 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,773 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,773 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,773 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,774 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,774 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,774 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,774 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,775 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,775 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,775 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,775 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,776 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,776 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,776 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,776 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,777 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,777 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,777 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,777 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,778 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,778 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,778 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,778 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,779 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,779 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,779 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,779 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,779 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,780 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,780 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,780 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,780 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,781 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,781 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,781 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,781 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,782 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,782 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,782 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,782 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,782 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,783 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,783 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,783 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,783 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,784 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,784 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,784 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,784 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,785 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,785 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,785 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,785 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,785 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,786 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,786 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,786 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,786 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,787 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,787 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,787 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,787 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,788 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,789 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,789 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,789 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,789 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,793 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,793 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,793 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,794 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,794 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,794 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,794 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,795 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,795 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,795 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,796 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,796 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,796 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,796 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,796 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,798 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,798 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,798 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,798 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,799 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,799 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,799 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,799 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,800 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,800 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:01:04,813 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-23 13:01:04,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 13:01:04,858 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:01:04,859 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:01:04,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:01:04,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:01:04,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:01:04,860 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:01:04,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:01:04,860 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:01:04,882 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:01:04,885 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 110 transitions, 228 flow [2020-12-23 13:01:04,889 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 110 transitions, 228 flow [2020-12-23 13:01:04,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 110 transitions, 228 flow [2020-12-23 13:01:04,994 INFO L129 PetriNetUnfolder]: 18/131 cut-off events. [2020-12-23 13:01:04,994 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-12-23 13:01:05,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 18/131 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2020-12-23 13:01:05,012 INFO L116 LiptonReduction]: Number of co-enabled transitions 2704 [2020-12-23 13:01:07,477 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-23 13:01:08,850 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-12-23 13:01:09,020 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 13:01:09,371 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-12-23 13:01:09,533 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 13:01:09,759 INFO L131 LiptonReduction]: Checked pairs total: 2594 [2020-12-23 13:01:09,760 INFO L133 LiptonReduction]: Total number of compositions: 100 [2020-12-23 13:01:09,767 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 25 transitions, 58 flow [2020-12-23 13:01:09,779 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 73 states. [2020-12-23 13:01:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-12-23 13:01:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 13:01:09,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:01:09,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:01:09,789 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:01:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:01:09,795 INFO L82 PathProgramCache]: Analyzing trace with hash -829937204, now seen corresponding path program 1 times [2020-12-23 13:01:09,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:01:09,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480138179] [2020-12-23 13:01:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:01:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:01:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:01:10,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480138179] [2020-12-23 13:01:10,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:01:10,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:01:10,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960542137] [2020-12-23 13:01:10,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:01:10,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:01:10,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:01:10,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:01:10,104 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-12-23 13:01:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:01:10,163 INFO L93 Difference]: Finished difference Result 61 states and 119 transitions. [2020-12-23 13:01:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:01:10,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 13:01:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:01:10,175 INFO L225 Difference]: With dead ends: 61 [2020-12-23 13:01:10,176 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 13:01:10,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:01:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 13:01:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 13:01:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 13:01:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 108 transitions. [2020-12-23 13:01:10,223 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 108 transitions. Word has length 7 [2020-12-23 13:01:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:01:10,224 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 108 transitions. [2020-12-23 13:01:10,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:01:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 108 transitions. [2020-12-23 13:01:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:01:10,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:01:10,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:01:10,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:01:10,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:01:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:01:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash 219221453, now seen corresponding path program 1 times [2020-12-23 13:01:10,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:01:10,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244641595] [2020-12-23 13:01:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:01:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:01:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:01:10,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244641595] [2020-12-23 13:01:10,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015861174] [2020-12-23 13:01:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:01:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:01:10,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 13:01:10,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:01:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:01:10,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:01:10,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-12-23 13:01:10,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013421680] [2020-12-23 13:01:10,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:01:10,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:01:10,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:01:10,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:01:10,427 INFO L87 Difference]: Start difference. First operand 53 states and 108 transitions. Second operand 5 states. [2020-12-23 13:01:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:01:10,456 INFO L93 Difference]: Finished difference Result 42 states and 81 transitions. [2020-12-23 13:01:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:01:10,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-23 13:01:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:01:10,458 INFO L225 Difference]: With dead ends: 42 [2020-12-23 13:01:10,458 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 13:01:10,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:01:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 13:01:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-23 13:01:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 13:01:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2020-12-23 13:01:10,466 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 8 [2020-12-23 13:01:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:01:10,467 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2020-12-23 13:01:10,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:01:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2020-12-23 13:01:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:01:10,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:01:10,468 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:01:10,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 13:01:10,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:01:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:01:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1616598548, now seen corresponding path program 2 times [2020-12-23 13:01:10,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:01:10,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031928975] [2020-12-23 13:01:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:01:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:01:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:01:10,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031928975] [2020-12-23 13:01:10,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103818114] [2020-12-23 13:01:10,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:01:10,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 13:01:10,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:01:10,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 13:01:10,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:01:10,949 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 166 [2020-12-23 13:01:10,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:01:10,982 INFO L625 ElimStorePlain]: treesize reduction 22, result has 48.8 percent of original size [2020-12-23 13:01:10,991 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:01:10,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-12-23 13:01:11,025 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 13:01:11,027 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:01:11,032 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:01:11,033 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:01:11,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-23 13:01:11,071 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2020-12-23 13:01:11,073 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:01:11,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:01:11,083 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 13:01:11,083 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-12-23 13:01:11,167 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2020-12-23 13:01:11,170 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:01:11,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:01:11,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:01:11,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:7 [2020-12-23 13:01:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:01:11,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 13:01:11,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2020-12-23 13:01:11,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73985646] [2020-12-23 13:01:11,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:01:11,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:01:11,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:01:11,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:01:11,195 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand 8 states. [2020-12-23 13:01:17,340 WARN L197 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-23 13:01:21,406 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-23 13:01:25,477 WARN L197 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-23 13:01:39,535 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 13:01:45,589 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-23 13:02:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:08,074 INFO L93 Difference]: Finished difference Result 102 states and 207 transitions. [2020-12-23 13:02:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 13:02:08,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-23 13:02:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:08,078 INFO L225 Difference]: With dead ends: 102 [2020-12-23 13:02:08,079 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 13:02:08,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=112, Invalid=301, Unknown=7, NotChecked=0, Total=420 [2020-12-23 13:02:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 13:02:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2020-12-23 13:02:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 13:02:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 106 transitions. [2020-12-23 13:02:08,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 106 transitions. Word has length 9 [2020-12-23 13:02:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:08,094 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 106 transitions. [2020-12-23 13:02:08,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:02:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 106 transitions. [2020-12-23 13:02:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:02:08,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:08,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:02:08,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:08,298 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1225713487, now seen corresponding path program 1 times [2020-12-23 13:02:08,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:08,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741181398] [2020-12-23 13:02:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 13:02:08,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741181398] [2020-12-23 13:02:08,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95573834] [2020-12-23 13:02:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:08,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 13:02:08,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 13:02:08,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:08,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 13:02:08,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257967931] [2020-12-23 13:02:08,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:02:08,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:08,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:02:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:02:08,537 INFO L87 Difference]: Start difference. First operand 52 states and 106 transitions. Second operand 6 states. [2020-12-23 13:02:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:08,567 INFO L93 Difference]: Finished difference Result 53 states and 107 transitions. [2020-12-23 13:02:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:02:08,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:02:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:08,571 INFO L225 Difference]: With dead ends: 53 [2020-12-23 13:02:08,572 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 13:02:08,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:02:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 13:02:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 13:02:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 13:02:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 107 transitions. [2020-12-23 13:02:08,593 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 107 transitions. Word has length 11 [2020-12-23 13:02:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:08,593 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 107 transitions. [2020-12-23 13:02:08,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:02:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 107 transitions. [2020-12-23 13:02:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:02:08,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:08,595 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:02:08,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:08,797 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1869356336, now seen corresponding path program 2 times [2020-12-23 13:02:08,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:08,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976589439] [2020-12-23 13:02:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 13:02:08,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976589439] [2020-12-23 13:02:08,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695965714] [2020-12-23 13:02:08,918 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:08,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:08,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:08,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 13:02:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 13:02:09,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:09,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 13:02:09,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982117189] [2020-12-23 13:02:09,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:02:09,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:02:09,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:02:09,030 INFO L87 Difference]: Start difference. First operand 53 states and 107 transitions. Second operand 7 states. [2020-12-23 13:02:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:09,050 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-12-23 13:02:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:02:09,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-23 13:02:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:09,054 INFO L225 Difference]: With dead ends: 54 [2020-12-23 13:02:09,054 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 13:02:09,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:02:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 13:02:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-23 13:02:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 13:02:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-12-23 13:02:09,076 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 12 [2020-12-23 13:02:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:09,076 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-12-23 13:02:09,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:02:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-12-23 13:02:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:02:09,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:09,077 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:02:09,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:09,291 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 967726959, now seen corresponding path program 3 times [2020-12-23 13:02:09,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:09,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607992266] [2020-12-23 13:02:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 13:02:09,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607992266] [2020-12-23 13:02:09,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383682902] [2020-12-23 13:02:09,362 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:09,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 13:02:09,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:09,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 13:02:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:09,486 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 13:02:09,487 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:02:09,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:02:09,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:02:09,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2020-12-23 13:02:09,513 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 13:02:09,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 13:02:09,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 13:02:09,521 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 13:02:09,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-12-23 13:02:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 13:02:09,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 13:02:09,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-12-23 13:02:09,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082045] [2020-12-23 13:02:09,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:02:09,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:09,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:02:09,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:02:09,538 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 7 states. [2020-12-23 13:02:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:09,728 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-12-23 13:02:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:02:09,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-23 13:02:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:09,730 INFO L225 Difference]: With dead ends: 74 [2020-12-23 13:02:09,730 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 13:02:09,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:02:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 13:02:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2020-12-23 13:02:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 13:02:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-12-23 13:02:09,736 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 13 [2020-12-23 13:02:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:09,736 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-12-23 13:02:09,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:02:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-12-23 13:02:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:02:09,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:09,737 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:09,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 13:02:09,952 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash 967720414, now seen corresponding path program 1 times [2020-12-23 13:02:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:09,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109535800] [2020-12-23 13:02:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:10,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109535800] [2020-12-23 13:02:10,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122706144] [2020-12-23 13:02:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:10,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 13:02:10,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:10,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:10,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 13:02:10,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323737248] [2020-12-23 13:02:10,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:02:10,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:10,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:02:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:02:10,120 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 8 states. [2020-12-23 13:02:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:10,146 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-12-23 13:02:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:02:10,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-23 13:02:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:10,147 INFO L225 Difference]: With dead ends: 50 [2020-12-23 13:02:10,147 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 13:02:10,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:02:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 13:02:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 13:02:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 13:02:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 96 transitions. [2020-12-23 13:02:10,153 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 96 transitions. Word has length 13 [2020-12-23 13:02:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:10,153 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 96 transitions. [2020-12-23 13:02:10,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:02:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 96 transitions. [2020-12-23 13:02:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:02:10,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:10,154 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:10,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:10,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1277010657, now seen corresponding path program 2 times [2020-12-23 13:02:10,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:10,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788074599] [2020-12-23 13:02:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:10,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788074599] [2020-12-23 13:02:10,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92580848] [2020-12-23 13:02:10,457 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:10,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:10,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:10,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 13:02:10,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:10,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:10,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 13:02:10,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716581839] [2020-12-23 13:02:10,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:02:10,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:02:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:02:10,585 INFO L87 Difference]: Start difference. First operand 50 states and 96 transitions. Second operand 9 states. [2020-12-23 13:02:10,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:10,614 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-12-23 13:02:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:02:10,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-23 13:02:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:10,615 INFO L225 Difference]: With dead ends: 51 [2020-12-23 13:02:10,616 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 13:02:10,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:02:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 13:02:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-23 13:02:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 13:02:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-12-23 13:02:10,632 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 14 [2020-12-23 13:02:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-12-23 13:02:10,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:02:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-12-23 13:02:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:02:10,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:10,635 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:10,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:10,849 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2144197122, now seen corresponding path program 3 times [2020-12-23 13:02:10,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:10,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196573046] [2020-12-23 13:02:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:10,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196573046] [2020-12-23 13:02:10,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284096610] [2020-12-23 13:02:10,968 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:11,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 13:02:11,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:11,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 13:02:11,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:11,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:11,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-23 13:02:11,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685602027] [2020-12-23 13:02:11,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:02:11,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:11,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:02:11,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:02:11,122 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 10 states. [2020-12-23 13:02:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:11,148 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-12-23 13:02:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:02:11,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-23 13:02:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:11,149 INFO L225 Difference]: With dead ends: 52 [2020-12-23 13:02:11,150 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 13:02:11,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:02:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 13:02:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 13:02:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 13:02:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-12-23 13:02:11,153 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 15 [2020-12-23 13:02:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:11,154 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-12-23 13:02:11,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:02:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-12-23 13:02:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:02:11,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:11,155 INFO L422 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:11,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 13:02:11,371 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:11,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:11,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1037793535, now seen corresponding path program 4 times [2020-12-23 13:02:11,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:11,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111831938] [2020-12-23 13:02:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:11,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111831938] [2020-12-23 13:02:11,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403967544] [2020-12-23 13:02:11,461 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:11,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:02:11,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:11,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 13:02:11,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:11,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:11,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-23 13:02:11,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505148859] [2020-12-23 13:02:11,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:02:11,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:11,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:02:11,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:02:11,581 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 11 states. [2020-12-23 13:02:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:11,635 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2020-12-23 13:02:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:02:11,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-12-23 13:02:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:11,637 INFO L225 Difference]: With dead ends: 53 [2020-12-23 13:02:11,637 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 13:02:11,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:02:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 13:02:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 13:02:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 13:02:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-12-23 13:02:11,641 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 16 [2020-12-23 13:02:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:11,642 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-12-23 13:02:11,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:02:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-12-23 13:02:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:02:11,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:11,643 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:11,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:11,859 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash 895256094, now seen corresponding path program 5 times [2020-12-23 13:02:11,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:11,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666291625] [2020-12-23 13:02:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:11,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666291625] [2020-12-23 13:02:11,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023850428] [2020-12-23 13:02:11,989 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:12,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 13:02:12,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:12,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 13:02:12,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:12,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:12,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-23 13:02:12,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107790931] [2020-12-23 13:02:12,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:02:12,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:12,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:02:12,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:02:12,140 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 12 states. [2020-12-23 13:02:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:12,171 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-12-23 13:02:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 13:02:12,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-23 13:02:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:12,172 INFO L225 Difference]: With dead ends: 54 [2020-12-23 13:02:12,172 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 13:02:12,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:02:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 13:02:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-23 13:02:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 13:02:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 100 transitions. [2020-12-23 13:02:12,176 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 100 transitions. Word has length 17 [2020-12-23 13:02:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:12,176 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 100 transitions. [2020-12-23 13:02:12,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:02:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 100 transitions. [2020-12-23 13:02:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:02:12,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:12,177 INFO L422 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:12,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:12,392 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash 771562719, now seen corresponding path program 6 times [2020-12-23 13:02:12,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:12,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521396918] [2020-12-23 13:02:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:12,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521396918] [2020-12-23 13:02:12,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427047065] [2020-12-23 13:02:12,527 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:12,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 13:02:12,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:12,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 13:02:12,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:12,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:12,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-23 13:02:12,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591460281] [2020-12-23 13:02:12,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:02:12,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:12,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:02:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:02:12,710 INFO L87 Difference]: Start difference. First operand 54 states and 100 transitions. Second operand 13 states. [2020-12-23 13:02:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:12,741 INFO L93 Difference]: Finished difference Result 55 states and 101 transitions. [2020-12-23 13:02:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 13:02:12,742 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-12-23 13:02:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:12,743 INFO L225 Difference]: With dead ends: 55 [2020-12-23 13:02:12,743 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 13:02:12,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:02:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 13:02:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-23 13:02:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 13:02:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-12-23 13:02:12,746 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 18 [2020-12-23 13:02:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:12,747 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-12-23 13:02:12,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:02:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-12-23 13:02:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 13:02:12,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:12,748 INFO L422 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:12,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 13:02:12,961 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1232035390, now seen corresponding path program 7 times [2020-12-23 13:02:12,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:12,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229182134] [2020-12-23 13:02:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:13,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229182134] [2020-12-23 13:02:13,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002964392] [2020-12-23 13:02:13,106 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:13,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 13:02:13,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:13,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:13,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-23 13:02:13,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877847420] [2020-12-23 13:02:13,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 13:02:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:13,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 13:02:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:02:13,257 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 14 states. [2020-12-23 13:02:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:13,291 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-12-23 13:02:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 13:02:13,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-12-23 13:02:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:13,292 INFO L225 Difference]: With dead ends: 56 [2020-12-23 13:02:13,293 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 13:02:13,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:02:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 13:02:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 13:02:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:02:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 102 transitions. [2020-12-23 13:02:13,297 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 102 transitions. Word has length 19 [2020-12-23 13:02:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:13,299 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 102 transitions. [2020-12-23 13:02:13,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 13:02:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-12-23 13:02:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 13:02:13,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:13,301 INFO L422 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:13,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 13:02:13,515 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1673180993, now seen corresponding path program 8 times [2020-12-23 13:02:13,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:13,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49514951] [2020-12-23 13:02:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49514951] [2020-12-23 13:02:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51947859] [2020-12-23 13:02:13,697 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:13,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:13,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 13:02:13,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:13,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:13,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-23 13:02:13,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254738637] [2020-12-23 13:02:13,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 13:02:13,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:13,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 13:02:13,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:02:13,873 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 15 states. [2020-12-23 13:02:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:13,907 INFO L93 Difference]: Finished difference Result 57 states and 103 transitions. [2020-12-23 13:02:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 13:02:13,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-12-23 13:02:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:13,908 INFO L225 Difference]: With dead ends: 57 [2020-12-23 13:02:13,909 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 13:02:13,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:02:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 13:02:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 13:02:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 13:02:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 103 transitions. [2020-12-23 13:02:13,913 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 103 transitions. Word has length 20 [2020-12-23 13:02:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:13,914 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 103 transitions. [2020-12-23 13:02:13,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 13:02:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2020-12-23 13:02:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:02:13,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:13,920 INFO L422 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:14,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 13:02:14,136 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:14,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1540575650, now seen corresponding path program 9 times [2020-12-23 13:02:14,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:14,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991181895] [2020-12-23 13:02:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:14,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991181895] [2020-12-23 13:02:14,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70061491] [2020-12-23 13:02:14,289 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:14,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 13:02:14,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 13:02:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:14,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:14,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-12-23 13:02:14,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12846734] [2020-12-23 13:02:14,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 13:02:14,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:14,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 13:02:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:02:14,560 INFO L87 Difference]: Start difference. First operand 57 states and 103 transitions. Second operand 16 states. [2020-12-23 13:02:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:14,591 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-12-23 13:02:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 13:02:14,592 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-12-23 13:02:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:14,593 INFO L225 Difference]: With dead ends: 58 [2020-12-23 13:02:14,593 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 13:02:14,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:02:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 13:02:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-23 13:02:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 13:02:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2020-12-23 13:02:14,602 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 21 [2020-12-23 13:02:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:14,602 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2020-12-23 13:02:14,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 13:02:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2020-12-23 13:02:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 13:02:14,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:14,603 INFO L422 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:14,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:14,817 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1724777313, now seen corresponding path program 10 times [2020-12-23 13:02:14,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:14,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266786144] [2020-12-23 13:02:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:14,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266786144] [2020-12-23 13:02:14,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964253726] [2020-12-23 13:02:14,996 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:15,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:02:15,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:15,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 13:02:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:15,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:15,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-23 13:02:15,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721883145] [2020-12-23 13:02:15,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 13:02:15,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:15,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 13:02:15,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-23 13:02:15,174 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 17 states. [2020-12-23 13:02:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:15,215 INFO L93 Difference]: Finished difference Result 59 states and 105 transitions. [2020-12-23 13:02:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 13:02:15,216 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2020-12-23 13:02:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:15,217 INFO L225 Difference]: With dead ends: 59 [2020-12-23 13:02:15,217 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 13:02:15,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-12-23 13:02:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 13:02:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-23 13:02:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 13:02:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 105 transitions. [2020-12-23 13:02:15,221 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 105 transitions. Word has length 22 [2020-12-23 13:02:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:15,223 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 105 transitions. [2020-12-23 13:02:15,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 13:02:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 105 transitions. [2020-12-23 13:02:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:02:15,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:15,228 INFO L422 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:15,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 13:02:15,443 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:15,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1154905726, now seen corresponding path program 11 times [2020-12-23 13:02:15,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:15,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348088199] [2020-12-23 13:02:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:15,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348088199] [2020-12-23 13:02:15,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963749033] [2020-12-23 13:02:15,642 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:15,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 13:02:15,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:15,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 13:02:15,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:15,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:15,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-23 13:02:15,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800716539] [2020-12-23 13:02:15,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 13:02:15,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:15,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 13:02:15,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-23 13:02:15,849 INFO L87 Difference]: Start difference. First operand 59 states and 105 transitions. Second operand 18 states. [2020-12-23 13:02:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:15,886 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-12-23 13:02:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 13:02:15,887 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-12-23 13:02:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:15,888 INFO L225 Difference]: With dead ends: 60 [2020-12-23 13:02:15,888 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 13:02:15,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-23 13:02:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 13:02:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-23 13:02:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 13:02:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 106 transitions. [2020-12-23 13:02:15,891 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 106 transitions. Word has length 23 [2020-12-23 13:02:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:15,891 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 106 transitions. [2020-12-23 13:02:15,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 13:02:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-12-23 13:02:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 13:02:15,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:15,892 INFO L422 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:16,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 13:02:16,106 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 230766719, now seen corresponding path program 12 times [2020-12-23 13:02:16,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453584546] [2020-12-23 13:02:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:16,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453584546] [2020-12-23 13:02:16,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250632888] [2020-12-23 13:02:16,340 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:16,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 13:02:16,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:16,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 13:02:16,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:16,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:16,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-23 13:02:16,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104787579] [2020-12-23 13:02:16,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 13:02:16,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 13:02:16,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 13:02:16,920 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 19 states. [2020-12-23 13:02:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:16,956 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-12-23 13:02:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 13:02:16,956 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2020-12-23 13:02:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:16,957 INFO L225 Difference]: With dead ends: 61 [2020-12-23 13:02:16,957 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 13:02:16,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 13:02:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 13:02:16,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-23 13:02:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 13:02:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2020-12-23 13:02:16,961 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 24 [2020-12-23 13:02:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:16,961 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2020-12-23 13:02:16,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 13:02:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-12-23 13:02:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 13:02:16,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:16,962 INFO L422 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:17,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 13:02:17,176 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1647228574, now seen corresponding path program 13 times [2020-12-23 13:02:17,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:17,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744996765] [2020-12-23 13:02:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:17,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744996765] [2020-12-23 13:02:17,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145770120] [2020-12-23 13:02:17,425 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:17,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 13:02:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:17,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:17,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-23 13:02:17,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454278184] [2020-12-23 13:02:17,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 13:02:17,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:17,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 13:02:17,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:02:17,581 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 20 states. [2020-12-23 13:02:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:17,616 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-12-23 13:02:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 13:02:17,616 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2020-12-23 13:02:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:17,617 INFO L225 Difference]: With dead ends: 62 [2020-12-23 13:02:17,617 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 13:02:17,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:02:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 13:02:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-23 13:02:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 13:02:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2020-12-23 13:02:17,620 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 25 [2020-12-23 13:02:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:17,621 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2020-12-23 13:02:17,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-23 13:02:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2020-12-23 13:02:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:02:17,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:17,621 INFO L422 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:17,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:17,836 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1687094177, now seen corresponding path program 14 times [2020-12-23 13:02:17,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:17,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265443271] [2020-12-23 13:02:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265443271] [2020-12-23 13:02:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882968737] [2020-12-23 13:02:18,137 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:18,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:18,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 13:02:18,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:18,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:18,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-23 13:02:18,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178966440] [2020-12-23 13:02:18,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 13:02:18,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 13:02:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-23 13:02:18,282 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand 21 states. [2020-12-23 13:02:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:18,320 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-12-23 13:02:18,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 13:02:18,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 26 [2020-12-23 13:02:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:18,321 INFO L225 Difference]: With dead ends: 63 [2020-12-23 13:02:18,322 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 13:02:18,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-23 13:02:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 13:02:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-23 13:02:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 13:02:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2020-12-23 13:02:18,325 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 26 [2020-12-23 13:02:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:18,325 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2020-12-23 13:02:18,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 13:02:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2020-12-23 13:02:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 13:02:18,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:18,326 INFO L422 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:18,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:18,541 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:18,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1971884354, now seen corresponding path program 15 times [2020-12-23 13:02:18,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:18,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814040214] [2020-12-23 13:02:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:18,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814040214] [2020-12-23 13:02:18,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358244200] [2020-12-23 13:02:18,827 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:19,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 13:02:19,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:19,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 13:02:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:20,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:20,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-23 13:02:20,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436863561] [2020-12-23 13:02:20,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 13:02:20,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 13:02:20,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-12-23 13:02:20,037 INFO L87 Difference]: Start difference. First operand 63 states and 109 transitions. Second operand 22 states. [2020-12-23 13:02:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:20,078 INFO L93 Difference]: Finished difference Result 64 states and 110 transitions. [2020-12-23 13:02:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 13:02:20,079 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2020-12-23 13:02:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:20,080 INFO L225 Difference]: With dead ends: 64 [2020-12-23 13:02:20,080 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 13:02:20,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-12-23 13:02:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 13:02:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-23 13:02:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 13:02:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 110 transitions. [2020-12-23 13:02:20,083 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 110 transitions. Word has length 27 [2020-12-23 13:02:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:20,083 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 110 transitions. [2020-12-23 13:02:20,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 13:02:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 110 transitions. [2020-12-23 13:02:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:02:20,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:20,084 INFO L422 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:20,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 13:02:20,299 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2084522047, now seen corresponding path program 16 times [2020-12-23 13:02:20,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:20,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919758390] [2020-12-23 13:02:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:20,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919758390] [2020-12-23 13:02:20,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562601509] [2020-12-23 13:02:20,641 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:20,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:02:20,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:20,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 13:02:20,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:20,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:20,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-23 13:02:20,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848701670] [2020-12-23 13:02:20,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 13:02:20,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:20,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 13:02:20,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 13:02:20,787 INFO L87 Difference]: Start difference. First operand 64 states and 110 transitions. Second operand 23 states. [2020-12-23 13:02:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:20,831 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2020-12-23 13:02:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 13:02:20,831 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2020-12-23 13:02:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:20,832 INFO L225 Difference]: With dead ends: 65 [2020-12-23 13:02:20,832 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 13:02:20,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 13:02:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 13:02:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-12-23 13:02:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 13:02:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-12-23 13:02:20,836 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 28 [2020-12-23 13:02:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:20,837 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-12-23 13:02:20,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 13:02:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-12-23 13:02:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 13:02:20,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:20,838 INFO L422 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:21,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 13:02:21,054 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1015898402, now seen corresponding path program 17 times [2020-12-23 13:02:21,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:21,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011311508] [2020-12-23 13:02:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:21,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011311508] [2020-12-23 13:02:21,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56192743] [2020-12-23 13:02:21,408 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:21,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 13:02:21,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:21,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 13:02:21,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:21,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:21,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-23 13:02:21,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747839782] [2020-12-23 13:02:21,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 13:02:21,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 13:02:21,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 13:02:21,893 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 24 states. [2020-12-23 13:02:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:21,934 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-12-23 13:02:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 13:02:21,935 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 29 [2020-12-23 13:02:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:21,935 INFO L225 Difference]: With dead ends: 66 [2020-12-23 13:02:21,936 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 13:02:21,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 13:02:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 13:02:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 13:02:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 13:02:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2020-12-23 13:02:21,939 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 29 [2020-12-23 13:02:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:21,939 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2020-12-23 13:02:21,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 13:02:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2020-12-23 13:02:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:02:21,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:21,940 INFO L422 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:22,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:22,154 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1655315487, now seen corresponding path program 18 times [2020-12-23 13:02:22,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:22,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783764455] [2020-12-23 13:02:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:22,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783764455] [2020-12-23 13:02:22,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899463040] [2020-12-23 13:02:22,531 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:24,403 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-23 13:02:24,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:24,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 13:02:24,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:24,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:24,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-23 13:02:24,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467713544] [2020-12-23 13:02:24,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 13:02:24,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 13:02:24,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:02:24,480 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 25 states. [2020-12-23 13:02:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:24,524 INFO L93 Difference]: Finished difference Result 67 states and 113 transitions. [2020-12-23 13:02:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 13:02:24,525 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 30 [2020-12-23 13:02:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:24,526 INFO L225 Difference]: With dead ends: 67 [2020-12-23 13:02:24,526 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 13:02:24,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-12-23 13:02:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 13:02:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-23 13:02:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 13:02:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 113 transitions. [2020-12-23 13:02:24,529 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 113 transitions. Word has length 30 [2020-12-23 13:02:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:24,530 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 113 transitions. [2020-12-23 13:02:24,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 13:02:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 113 transitions. [2020-12-23 13:02:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 13:02:24,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:24,530 INFO L422 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:24,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 13:02:24,746 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1436399874, now seen corresponding path program 19 times [2020-12-23 13:02:24,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:24,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074342557] [2020-12-23 13:02:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074342557] [2020-12-23 13:02:25,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692553977] [2020-12-23 13:02:25,172 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:25,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 13:02:25,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:25,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:25,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-23 13:02:25,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022252648] [2020-12-23 13:02:25,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 13:02:25,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 13:02:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-12-23 13:02:25,326 INFO L87 Difference]: Start difference. First operand 67 states and 113 transitions. Second operand 26 states. [2020-12-23 13:02:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:25,375 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2020-12-23 13:02:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 13:02:25,375 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 31 [2020-12-23 13:02:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:25,376 INFO L225 Difference]: With dead ends: 68 [2020-12-23 13:02:25,376 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 13:02:25,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-12-23 13:02:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 13:02:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-23 13:02:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 13:02:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2020-12-23 13:02:25,379 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 31 [2020-12-23 13:02:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:25,380 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2020-12-23 13:02:25,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 13:02:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-12-23 13:02:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 13:02:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:25,381 INFO L422 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:25,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:25,594 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:25,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1504671743, now seen corresponding path program 20 times [2020-12-23 13:02:25,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:25,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917594113] [2020-12-23 13:02:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:26,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917594113] [2020-12-23 13:02:26,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311849556] [2020-12-23 13:02:26,036 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:26,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:26,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 13:02:26,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:26,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:26,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-23 13:02:26,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182482851] [2020-12-23 13:02:26,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 13:02:26,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:26,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 13:02:26,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-23 13:02:26,208 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand 27 states. [2020-12-23 13:02:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:26,272 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-12-23 13:02:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 13:02:26,273 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2020-12-23 13:02:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:26,274 INFO L225 Difference]: With dead ends: 69 [2020-12-23 13:02:26,274 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 13:02:26,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-23 13:02:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 13:02:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-23 13:02:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 13:02:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 115 transitions. [2020-12-23 13:02:26,277 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 115 transitions. Word has length 32 [2020-12-23 13:02:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:26,277 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 115 transitions. [2020-12-23 13:02:26,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 13:02:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 115 transitions. [2020-12-23 13:02:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 13:02:26,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:26,278 INFO L422 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:26,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 13:02:26,492 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1811388642, now seen corresponding path program 21 times [2020-12-23 13:02:26,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:26,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020047880] [2020-12-23 13:02:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:26,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020047880] [2020-12-23 13:02:26,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118073941] [2020-12-23 13:02:26,989 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:28,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-12-23 13:02:28,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:28,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 13:02:28,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:28,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:28,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-23 13:02:28,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537174751] [2020-12-23 13:02:28,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 13:02:28,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:28,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 13:02:28,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-12-23 13:02:28,915 INFO L87 Difference]: Start difference. First operand 69 states and 115 transitions. Second operand 28 states. [2020-12-23 13:02:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:28,964 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-12-23 13:02:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 13:02:28,964 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2020-12-23 13:02:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:28,965 INFO L225 Difference]: With dead ends: 70 [2020-12-23 13:02:28,965 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 13:02:28,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-12-23 13:02:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 13:02:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-23 13:02:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 13:02:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2020-12-23 13:02:28,969 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 33 [2020-12-23 13:02:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:28,969 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2020-12-23 13:02:28,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 13:02:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2020-12-23 13:02:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 13:02:28,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:28,970 INFO L422 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:29,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 13:02:29,185 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:29,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1530045473, now seen corresponding path program 22 times [2020-12-23 13:02:29,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:29,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534809342] [2020-12-23 13:02:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:29,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534809342] [2020-12-23 13:02:29,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054632601] [2020-12-23 13:02:29,705 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:29,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:02:29,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:29,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 13:02:29,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:29,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:29,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-23 13:02:29,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416284913] [2020-12-23 13:02:29,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 13:02:29,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:29,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 13:02:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:02:29,877 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand 29 states. [2020-12-23 13:02:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:29,925 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2020-12-23 13:02:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 13:02:29,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 34 [2020-12-23 13:02:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:29,927 INFO L225 Difference]: With dead ends: 71 [2020-12-23 13:02:29,927 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 13:02:29,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 13:02:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 13:02:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-23 13:02:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 13:02:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 117 transitions. [2020-12-23 13:02:29,930 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 117 transitions. Word has length 34 [2020-12-23 13:02:29,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:29,930 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 117 transitions. [2020-12-23 13:02:29,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 13:02:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 117 transitions. [2020-12-23 13:02:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 13:02:29,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:29,931 INFO L422 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:30,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 13:02:30,146 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1398341826, now seen corresponding path program 23 times [2020-12-23 13:02:30,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:30,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533845206] [2020-12-23 13:02:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:30,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533845206] [2020-12-23 13:02:30,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110859984] [2020-12-23 13:02:30,696 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:31,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-12-23 13:02:31,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:31,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 13:02:31,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:31,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:31,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-23 13:02:31,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953749792] [2020-12-23 13:02:31,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 13:02:31,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 13:02:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 13:02:31,200 INFO L87 Difference]: Start difference. First operand 71 states and 117 transitions. Second operand 30 states. [2020-12-23 13:02:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:31,248 INFO L93 Difference]: Finished difference Result 72 states and 118 transitions. [2020-12-23 13:02:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 13:02:31,248 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2020-12-23 13:02:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:31,249 INFO L225 Difference]: With dead ends: 72 [2020-12-23 13:02:31,249 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 13:02:31,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 13:02:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 13:02:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-23 13:02:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 13:02:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 118 transitions. [2020-12-23 13:02:31,253 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 118 transitions. Word has length 35 [2020-12-23 13:02:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:31,253 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 118 transitions. [2020-12-23 13:02:31,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 13:02:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 118 transitions. [2020-12-23 13:02:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 13:02:31,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:31,254 INFO L422 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:31,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 13:02:31,467 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:31,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1610496065, now seen corresponding path program 24 times [2020-12-23 13:02:31,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:31,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341757459] [2020-12-23 13:02:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:32,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341757459] [2020-12-23 13:02:32,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486450764] [2020-12-23 13:02:32,042 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:37,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-12-23 13:02:37,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 13:02:37,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:37,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:37,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-12-23 13:02:37,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465690230] [2020-12-23 13:02:37,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 13:02:37,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 13:02:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-12-23 13:02:37,837 INFO L87 Difference]: Start difference. First operand 72 states and 118 transitions. Second operand 31 states. [2020-12-23 13:02:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:37,889 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-12-23 13:02:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 13:02:37,890 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 36 [2020-12-23 13:02:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:37,891 INFO L225 Difference]: With dead ends: 73 [2020-12-23 13:02:37,891 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 13:02:37,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-12-23 13:02:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 13:02:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-23 13:02:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 13:02:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2020-12-23 13:02:37,894 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 36 [2020-12-23 13:02:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:37,895 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2020-12-23 13:02:37,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 13:02:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-12-23 13:02:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 13:02:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:37,895 INFO L422 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:38,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:38,111 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:38,112 INFO L82 PathProgramCache]: Analyzing trace with hash 402657118, now seen corresponding path program 25 times [2020-12-23 13:02:38,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:38,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587540466] [2020-12-23 13:02:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:38,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587540466] [2020-12-23 13:02:38,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707244193] [2020-12-23 13:02:38,769 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:38,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 13:02:38,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:38,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:38,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-12-23 13:02:38,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645352815] [2020-12-23 13:02:38,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 13:02:38,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:38,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 13:02:38,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-23 13:02:38,949 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 32 states. [2020-12-23 13:02:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:39,002 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2020-12-23 13:02:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 13:02:39,002 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 37 [2020-12-23 13:02:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:39,003 INFO L225 Difference]: With dead ends: 74 [2020-12-23 13:02:39,003 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 13:02:39,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-12-23 13:02:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 13:02:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 13:02:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 13:02:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2020-12-23 13:02:39,007 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 37 [2020-12-23 13:02:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:39,007 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2020-12-23 13:02:39,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 13:02:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2020-12-23 13:02:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 13:02:39,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:39,008 INFO L422 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:39,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:39,221 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:39,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1614103649, now seen corresponding path program 26 times [2020-12-23 13:02:39,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:39,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515706536] [2020-12-23 13:02:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:39,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515706536] [2020-12-23 13:02:39,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474716986] [2020-12-23 13:02:39,829 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:39,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:02:39,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 13:02:39,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:39,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:39,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2020-12-23 13:02:39,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284651001] [2020-12-23 13:02:39,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 13:02:39,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:39,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 13:02:39,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 13:02:39,995 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand 33 states. [2020-12-23 13:02:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:40,049 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2020-12-23 13:02:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 13:02:40,050 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 38 [2020-12-23 13:02:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:40,050 INFO L225 Difference]: With dead ends: 75 [2020-12-23 13:02:40,051 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 13:02:40,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 13:02:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 13:02:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-23 13:02:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 13:02:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 121 transitions. [2020-12-23 13:02:40,054 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 121 transitions. Word has length 38 [2020-12-23 13:02:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:40,054 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 121 transitions. [2020-12-23 13:02:40,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 13:02:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 121 transitions. [2020-12-23 13:02:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 13:02:40,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:40,055 INFO L422 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:40,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:40,270 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 290822014, now seen corresponding path program 27 times [2020-12-23 13:02:40,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:40,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741371952] [2020-12-23 13:02:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741371952] [2020-12-23 13:02:40,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32309005] [2020-12-23 13:02:40,968 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:42,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-12-23 13:02:42,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:42,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 13:02:42,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:42,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:42,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-12-23 13:02:42,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56881477] [2020-12-23 13:02:42,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 13:02:42,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 13:02:42,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 13:02:42,142 INFO L87 Difference]: Start difference. First operand 75 states and 121 transitions. Second operand 34 states. [2020-12-23 13:02:42,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:42,205 INFO L93 Difference]: Finished difference Result 76 states and 122 transitions. [2020-12-23 13:02:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 13:02:42,207 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2020-12-23 13:02:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:42,208 INFO L225 Difference]: With dead ends: 76 [2020-12-23 13:02:42,208 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 13:02:42,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 13:02:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 13:02:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 13:02:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 13:02:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 122 transitions. [2020-12-23 13:02:42,212 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 122 transitions. Word has length 39 [2020-12-23 13:02:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:42,212 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 122 transitions. [2020-12-23 13:02:42,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 13:02:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 122 transitions. [2020-12-23 13:02:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 13:02:42,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:42,213 INFO L422 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:42,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 13:02:42,429 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:42,430 INFO L82 PathProgramCache]: Analyzing trace with hash -786024577, now seen corresponding path program 28 times [2020-12-23 13:02:42,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:42,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034383242] [2020-12-23 13:02:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034383242] [2020-12-23 13:02:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981926594] [2020-12-23 13:02:43,237 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:43,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:02:43,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:43,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 13:02:43,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:43,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:43,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-12-23 13:02:43,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586773806] [2020-12-23 13:02:43,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 13:02:43,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 13:02:43,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:02:43,425 INFO L87 Difference]: Start difference. First operand 76 states and 122 transitions. Second operand 35 states. [2020-12-23 13:02:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:43,475 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-12-23 13:02:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-23 13:02:43,476 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 40 [2020-12-23 13:02:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:43,476 INFO L225 Difference]: With dead ends: 77 [2020-12-23 13:02:43,476 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 13:02:43,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 13:02:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 13:02:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-23 13:02:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 13:02:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2020-12-23 13:02:43,480 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 40 [2020-12-23 13:02:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:43,480 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2020-12-23 13:02:43,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 13:02:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2020-12-23 13:02:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 13:02:43,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:43,481 INFO L422 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:43,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:43,695 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash 191469470, now seen corresponding path program 29 times [2020-12-23 13:02:43,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:43,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037018203] [2020-12-23 13:02:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:44,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037018203] [2020-12-23 13:02:44,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315678357] [2020-12-23 13:02:44,484 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:02:47,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-12-23 13:02:47,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:02:47,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 13:02:47,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:02:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:47,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:02:47,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2020-12-23 13:02:47,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018028549] [2020-12-23 13:02:47,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 13:02:47,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:02:47,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 13:02:47,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:02:47,576 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand 36 states. [2020-12-23 13:02:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:02:47,638 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2020-12-23 13:02:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 13:02:47,639 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 41 [2020-12-23 13:02:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:02:47,640 INFO L225 Difference]: With dead ends: 78 [2020-12-23 13:02:47,640 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 13:02:47,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 13:02:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 13:02:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-23 13:02:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 13:02:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions. [2020-12-23 13:02:47,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 41 [2020-12-23 13:02:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:02:47,646 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 124 transitions. [2020-12-23 13:02:47,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 13:02:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions. [2020-12-23 13:02:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 13:02:47,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:02:47,647 INFO L422 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:02:47,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 13:02:47,860 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:02:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:02:47,861 INFO L82 PathProgramCache]: Analyzing trace with hash 429013855, now seen corresponding path program 30 times [2020-12-23 13:02:47,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:02:47,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295266347] [2020-12-23 13:02:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:02:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:02:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:02:48,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295266347] [2020-12-23 13:02:48,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816789352] [2020-12-23 13:02:48,682 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:08,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-12-23 13:03:08,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 13:03:08,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:08,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:08,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2020-12-23 13:03:08,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436075205] [2020-12-23 13:03:08,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 13:03:08,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 13:03:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 13:03:08,250 INFO L87 Difference]: Start difference. First operand 78 states and 124 transitions. Second operand 37 states. [2020-12-23 13:03:08,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:08,319 INFO L93 Difference]: Finished difference Result 79 states and 125 transitions. [2020-12-23 13:03:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-23 13:03:08,324 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 42 [2020-12-23 13:03:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:08,325 INFO L225 Difference]: With dead ends: 79 [2020-12-23 13:03:08,325 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 13:03:08,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 13:03:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 13:03:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-23 13:03:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 13:03:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2020-12-23 13:03:08,329 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 42 [2020-12-23 13:03:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:08,329 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2020-12-23 13:03:08,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 13:03:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2020-12-23 13:03:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 13:03:08,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:08,330 INFO L422 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:08,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:08,544 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash -797044802, now seen corresponding path program 31 times [2020-12-23 13:03:08,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:08,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682080659] [2020-12-23 13:03:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:09,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682080659] [2020-12-23 13:03:09,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740303271] [2020-12-23 13:03:09,433 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:09,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 13:03:09,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:09,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2020-12-23 13:03:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782735372] [2020-12-23 13:03:09,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 13:03:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 13:03:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 13:03:09,617 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand 38 states. [2020-12-23 13:03:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:09,696 INFO L93 Difference]: Finished difference Result 80 states and 126 transitions. [2020-12-23 13:03:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 13:03:09,697 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 43 [2020-12-23 13:03:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:09,697 INFO L225 Difference]: With dead ends: 80 [2020-12-23 13:03:09,697 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 13:03:09,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 13:03:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 13:03:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-23 13:03:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-23 13:03:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2020-12-23 13:03:09,701 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 43 [2020-12-23 13:03:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:09,701 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2020-12-23 13:03:09,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 13:03:09,702 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2020-12-23 13:03:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 13:03:09,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:09,703 INFO L422 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:09,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 13:03:09,917 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash -150157505, now seen corresponding path program 32 times [2020-12-23 13:03:09,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:09,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686317281] [2020-12-23 13:03:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:10,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686317281] [2020-12-23 13:03:10,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193055592] [2020-12-23 13:03:10,847 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:10,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:03:10,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:10,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 13:03:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:11,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:11,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2020-12-23 13:03:11,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621620794] [2020-12-23 13:03:11,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 13:03:11,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:11,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 13:03:11,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 13:03:11,041 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand 39 states. [2020-12-23 13:03:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:11,109 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2020-12-23 13:03:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 13:03:11,110 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 44 [2020-12-23 13:03:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:11,111 INFO L225 Difference]: With dead ends: 81 [2020-12-23 13:03:11,111 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 13:03:11,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 13:03:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 13:03:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-23 13:03:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-23 13:03:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2020-12-23 13:03:11,114 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 44 [2020-12-23 13:03:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:11,115 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2020-12-23 13:03:11,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 13:03:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-12-23 13:03:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 13:03:11,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:11,115 INFO L422 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:11,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 13:03:11,329 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1571487778, now seen corresponding path program 33 times [2020-12-23 13:03:11,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:11,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446991481] [2020-12-23 13:03:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446991481] [2020-12-23 13:03:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098021524] [2020-12-23 13:03:12,281 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:14,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-12-23 13:03:14,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:15,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 13:03:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:15,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:15,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2020-12-23 13:03:15,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668417253] [2020-12-23 13:03:15,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 13:03:15,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 13:03:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 13:03:15,091 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand 40 states. [2020-12-23 13:03:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:15,154 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-12-23 13:03:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 13:03:15,155 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 45 [2020-12-23 13:03:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:15,156 INFO L225 Difference]: With dead ends: 82 [2020-12-23 13:03:15,156 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 13:03:15,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 13:03:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 13:03:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-23 13:03:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 13:03:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2020-12-23 13:03:15,160 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 45 [2020-12-23 13:03:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:15,160 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2020-12-23 13:03:15,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 13:03:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-12-23 13:03:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 13:03:15,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:15,161 INFO L422 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:15,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 13:03:15,375 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1611914015, now seen corresponding path program 34 times [2020-12-23 13:03:15,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:15,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727211869] [2020-12-23 13:03:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:16,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727211869] [2020-12-23 13:03:16,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703726860] [2020-12-23 13:03:16,463 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:16,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:03:16,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 13:03:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:16,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:16,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2020-12-23 13:03:16,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278939172] [2020-12-23 13:03:16,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-23 13:03:16,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:16,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-23 13:03:16,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 13:03:16,651 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand 41 states. [2020-12-23 13:03:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:16,726 INFO L93 Difference]: Finished difference Result 83 states and 129 transitions. [2020-12-23 13:03:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 13:03:16,726 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 46 [2020-12-23 13:03:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:16,727 INFO L225 Difference]: With dead ends: 83 [2020-12-23 13:03:16,727 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 13:03:16,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 13:03:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 13:03:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-23 13:03:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 13:03:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2020-12-23 13:03:16,731 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 46 [2020-12-23 13:03:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:16,731 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2020-12-23 13:03:16,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-23 13:03:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2020-12-23 13:03:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 13:03:16,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:16,732 INFO L422 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:16,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 13:03:16,946 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1513121790, now seen corresponding path program 35 times [2020-12-23 13:03:16,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:16,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063049950] [2020-12-23 13:03:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:18,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063049950] [2020-12-23 13:03:18,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656829351] [2020-12-23 13:03:18,050 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:27,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-12-23 13:03:27,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:27,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 13:03:27,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:27,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:27,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2020-12-23 13:03:27,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798760620] [2020-12-23 13:03:27,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-23 13:03:27,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-23 13:03:27,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 13:03:27,326 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand 42 states. [2020-12-23 13:03:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:27,392 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2020-12-23 13:03:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 13:03:27,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 47 [2020-12-23 13:03:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:27,394 INFO L225 Difference]: With dead ends: 84 [2020-12-23 13:03:27,394 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 13:03:27,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 13:03:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 13:03:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-23 13:03:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 13:03:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-12-23 13:03:27,398 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 47 [2020-12-23 13:03:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:27,399 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-12-23 13:03:27,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-23 13:03:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-12-23 13:03:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 13:03:27,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:27,400 INFO L422 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:27,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:27,613 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1549437185, now seen corresponding path program 36 times [2020-12-23 13:03:27,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:27,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743455345] [2020-12-23 13:03:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:28,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743455345] [2020-12-23 13:03:28,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629637940] [2020-12-23 13:03:28,792 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:50,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-12-23 13:03:50,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 13:03:50,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:50,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:50,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2020-12-23 13:03:50,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288730435] [2020-12-23 13:03:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 13:03:50,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 13:03:50,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 13:03:50,261 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 43 states. [2020-12-23 13:03:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:50,339 INFO L93 Difference]: Finished difference Result 85 states and 131 transitions. [2020-12-23 13:03:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 13:03:50,339 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 48 [2020-12-23 13:03:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:50,340 INFO L225 Difference]: With dead ends: 85 [2020-12-23 13:03:50,341 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 13:03:50,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 13:03:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 13:03:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-23 13:03:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-23 13:03:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2020-12-23 13:03:50,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 48 [2020-12-23 13:03:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:50,345 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2020-12-23 13:03:50,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 13:03:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2020-12-23 13:03:50,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 13:03:50,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:50,346 INFO L422 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:50,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 13:03:50,560 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1999484898, now seen corresponding path program 37 times [2020-12-23 13:03:50,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:50,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126645211] [2020-12-23 13:03:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:51,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126645211] [2020-12-23 13:03:51,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456265081] [2020-12-23 13:03:51,750 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:51,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 13:03:51,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:51,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:51,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2020-12-23 13:03:51,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567803572] [2020-12-23 13:03:51,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-23 13:03:51,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:51,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-23 13:03:51,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 13:03:51,938 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand 44 states. [2020-12-23 13:03:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:52,011 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-12-23 13:03:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-23 13:03:52,011 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 49 [2020-12-23 13:03:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:52,012 INFO L225 Difference]: With dead ends: 86 [2020-12-23 13:03:52,012 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 13:03:52,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 13:03:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 13:03:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-23 13:03:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 13:03:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2020-12-23 13:03:52,016 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 49 [2020-12-23 13:03:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:52,017 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2020-12-23 13:03:52,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-23 13:03:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2020-12-23 13:03:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 13:03:52,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:52,018 INFO L422 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:52,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:52,233 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1228905183, now seen corresponding path program 38 times [2020-12-23 13:03:52,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:52,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996212325] [2020-12-23 13:03:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:53,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996212325] [2020-12-23 13:03:53,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932097582] [2020-12-23 13:03:53,409 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:53,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 13:03:53,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:03:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 13:03:53,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:03:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:53,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:03:53,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2020-12-23 13:03:53,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438279530] [2020-12-23 13:03:53,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-23 13:03:53,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:03:53,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-23 13:03:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 13:03:53,608 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand 45 states. [2020-12-23 13:03:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:03:53,687 INFO L93 Difference]: Finished difference Result 87 states and 133 transitions. [2020-12-23 13:03:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 13:03:53,690 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 50 [2020-12-23 13:03:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:03:53,691 INFO L225 Difference]: With dead ends: 87 [2020-12-23 13:03:53,691 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 13:03:53,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 13:03:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 13:03:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-12-23 13:03:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 13:03:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 133 transitions. [2020-12-23 13:03:53,695 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 133 transitions. Word has length 50 [2020-12-23 13:03:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:03:53,696 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 133 transitions. [2020-12-23 13:03:53,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-23 13:03:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 133 transitions. [2020-12-23 13:03:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 13:03:53,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:03:53,697 INFO L422 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:03:53,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:03:53,910 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:03:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:03:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1770217410, now seen corresponding path program 39 times [2020-12-23 13:03:53,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:03:53,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423152909] [2020-12-23 13:03:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:03:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:03:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:03:55,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423152909] [2020-12-23 13:03:55,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402169124] [2020-12-23 13:03:55,154 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:04:22,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-12-23 13:04:22,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:04:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 13:04:22,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:04:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:22,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:04:22,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2020-12-23 13:04:22,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223726361] [2020-12-23 13:04:22,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-23 13:04:22,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:22,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-23 13:04:22,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 13:04:22,849 INFO L87 Difference]: Start difference. First operand 87 states and 133 transitions. Second operand 46 states. [2020-12-23 13:04:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:22,938 INFO L93 Difference]: Finished difference Result 88 states and 134 transitions. [2020-12-23 13:04:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-23 13:04:22,938 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 51 [2020-12-23 13:04:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:22,939 INFO L225 Difference]: With dead ends: 88 [2020-12-23 13:04:22,939 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 13:04:22,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 13:04:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 13:04:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-23 13:04:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 13:04:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-12-23 13:04:22,944 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 51 [2020-12-23 13:04:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:22,944 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-12-23 13:04:22,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-23 13:04:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-12-23 13:04:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 13:04:22,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:22,945 INFO L422 BasicCegarLoop]: trace histogram [43, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:04:23,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-23 13:04:23,146 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:04:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:23,147 INFO L82 PathProgramCache]: Analyzing trace with hash -253737281, now seen corresponding path program 40 times [2020-12-23 13:04:23,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:23,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200540162] [2020-12-23 13:04:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:24,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200540162] [2020-12-23 13:04:24,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132475442] [2020-12-23 13:04:24,616 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:04:24,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 13:04:24,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:04:24,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 13:04:24,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:04:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:24,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:04:24,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2020-12-23 13:04:24,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736934815] [2020-12-23 13:04:24,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-23 13:04:24,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-23 13:04:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 13:04:24,829 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 47 states. [2020-12-23 13:04:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:24,919 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2020-12-23 13:04:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-23 13:04:24,920 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 52 [2020-12-23 13:04:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:24,921 INFO L225 Difference]: With dead ends: 89 [2020-12-23 13:04:24,921 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 13:04:24,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 13:04:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 13:04:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-23 13:04:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 13:04:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 135 transitions. [2020-12-23 13:04:24,925 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 135 transitions. Word has length 52 [2020-12-23 13:04:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:24,925 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 135 transitions. [2020-12-23 13:04:24,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-23 13:04:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 135 transitions. [2020-12-23 13:04:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 13:04:24,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:24,926 INFO L422 BasicCegarLoop]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:04:25,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-23 13:04:25,140 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:04:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash -487493538, now seen corresponding path program 41 times [2020-12-23 13:04:25,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:25,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650447926] [2020-12-23 13:04:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650447926] [2020-12-23 13:04:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527668306] [2020-12-23 13:04:26,537 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 13:04:57,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2020-12-23 13:04:57,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 13:04:57,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 13:04:57,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 13:04:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:57,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 13:04:57,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2020-12-23 13:04:57,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001151181] [2020-12-23 13:04:57,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-12-23 13:04:57,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:57,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-12-23 13:04:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 13:04:57,839 INFO L87 Difference]: Start difference. First operand 89 states and 135 transitions. Second operand 48 states. [2020-12-23 13:04:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:57,926 INFO L93 Difference]: Finished difference Result 90 states and 136 transitions. [2020-12-23 13:04:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-23 13:04:57,927 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 53 [2020-12-23 13:04:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:57,928 INFO L225 Difference]: With dead ends: 90 [2020-12-23 13:04:57,928 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 13:04:57,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 13:04:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 13:04:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-23 13:04:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 13:04:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 136 transitions. [2020-12-23 13:04:57,932 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 136 transitions. Word has length 53 [2020-12-23 13:04:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:57,933 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 136 transitions. [2020-12-23 13:04:57,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-12-23 13:04:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 136 transitions. [2020-12-23 13:04:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 13:04:57,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:57,934 INFO L422 BasicCegarLoop]: trace histogram [45, 2, 2, 1, 1, 1, 1, 1] [2020-12-23 13:04:58,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-23 13:04:58,147 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-12-23 13:04:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 855997087, now seen corresponding path program 42 times [2020-12-23 13:04:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:58,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835329820] [2020-12-23 13:04:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 13:04:59,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835329820] [2020-12-23 13:04:59,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187189633] [2020-12-23 13:04:59,596 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true