/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/singleton_with-uninit-problems.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:04:30,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:04:30,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:04:30,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:04:30,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:04:30,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:04:30,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:04:30,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:04:30,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:04:30,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:04:30,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:04:30,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:04:30,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:04:30,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:04:30,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:04:30,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:04:30,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:04:30,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:04:30,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:04:30,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:04:30,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:04:30,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:04:30,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:04:30,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:04:30,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:04:30,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:04:30,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:04:30,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:04:30,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:04:30,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:04:30,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:04:30,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:04:30,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:04:30,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:04:30,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:04:30,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:04:30,803 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 13:04:30,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:04:30,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:04:30,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:04:30,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:04:30,836 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:04:30,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:04:30,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:04:30,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:04:30,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:04:30,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:04:30,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:04:30,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:04:30,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:04:30,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:04:30,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:04:30,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:04:30,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:04:30,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:04:30,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:04:30,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:04:30,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:04:30,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:04:30,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:04:30,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:04:30,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:04:30,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:04:31,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:04:31,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:04:31,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:04:31,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:04:31,343 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:04:31,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-12-23 13:04:31,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dba287270/ee39c75e562f4660afeb5e2794b6cb5e/FLAGc168e11ad [2020-12-23 13:04:32,446 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:04:32,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2020-12-23 13:04:32,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dba287270/ee39c75e562f4660afeb5e2794b6cb5e/FLAGc168e11ad [2020-12-23 13:04:32,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dba287270/ee39c75e562f4660afeb5e2794b6cb5e [2020-12-23 13:04:32,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:04:32,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:04:32,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:04:32,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:04:32,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:04:32,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:04:32" (1/1) ... [2020-12-23 13:04:32,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e4a3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:32, skipping insertion in model container [2020-12-23 13:04:32,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:04:32" (1/1) ... [2020-12-23 13:04:32,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:04:32,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:04:33,176 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-23 13:04:33,706 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/singleton_with-uninit-problems.i[55568,55581] left hand side expression in assignment: lhs: VariableLHS[~v~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],offset]]] [2020-12-23 13:04:33,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:04:33,747 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:04:33,768 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-23 13:04:33,795 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/singleton_with-uninit-problems.i[55568,55581] left hand side expression in assignment: lhs: VariableLHS[~v~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~v~0,GLOBAL],offset]]] [2020-12-23 13:04:33,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:04:34,089 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:04:34,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34 WrapperNode [2020-12-23 13:04:34,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:04:34,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:04:34,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:04:34,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:04:34,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:04:34,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:04:34,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:04:34,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:04:34,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... [2020-12-23 13:04:34,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:04:34,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:04:34,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:04:34,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:04:34,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:04:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:04:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:04:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:04:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:04:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 13:04:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2020-12-23 13:04:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2020-12-23 13:04:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-12-23 13:04:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-12-23 13:04:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-12-23 13:04:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-12-23 13:04:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-12-23 13:04:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-12-23 13:04:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:04:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 13:04:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:04:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:04:34,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:04:34,396 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 13:04:35,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:04:35,004 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-23 13:04:35,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:04:35 BoogieIcfgContainer [2020-12-23 13:04:35,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:04:35,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:04:35,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:04:35,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:04:35,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:04:32" (1/3) ... [2020-12-23 13:04:35,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c871be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:04:35, skipping insertion in model container [2020-12-23 13:04:35,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:04:34" (2/3) ... [2020-12-23 13:04:35,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c871be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:04:35, skipping insertion in model container [2020-12-23 13:04:35,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:04:35" (3/3) ... [2020-12-23 13:04:35,018 INFO L111 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2020-12-23 13:04:35,027 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:04:35,027 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:04:35,034 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:04:35,035 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:04:35,119 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,119 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,119 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,120 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,120 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,120 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,121 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,121 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,121 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,122 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,122 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,122 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,123 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,123 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,123 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,124 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,124 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,124 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,124 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,125 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,126 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,126 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,126 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,127 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,127 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,127 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,128 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,128 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,128 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,129 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,130 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,130 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,130 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,131 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,131 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,131 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,132 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,132 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,132 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,133 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,133 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,133 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,133 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,133 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,134 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,134 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,134 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,135 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,135 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,135 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,135 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,136 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,137 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,138 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,139 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,139 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,139 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,139 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,140 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,140 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,141 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,141 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,141 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,142 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,142 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,142 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,143 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,143 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,143 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,143 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,143 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,144 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,144 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,144 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,145 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,145 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,145 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,145 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,146 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,147 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,148 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,148 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,148 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,148 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,149 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,149 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,149 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,150 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,150 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,150 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,150 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,151 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,152 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,153 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,153 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,153 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,154 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,155 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,157 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,157 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,157 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,158 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,160 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,161 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,161 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,162 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,163 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,163 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,180 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,180 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,180 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,181 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,181 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,182 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,182 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,183 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,183 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,184 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,184 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,184 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,184 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,185 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,186 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,186 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,186 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,187 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,187 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,187 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,188 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,188 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,188 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,189 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,189 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,190 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,193 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,193 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,194 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,194 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,200 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,201 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,201 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,201 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,204 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,205 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,208 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,209 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,209 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,209 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,209 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,213 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,213 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,213 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,214 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,214 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,214 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,214 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,215 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,215 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,215 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,215 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,216 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t4~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,216 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,216 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,217 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,217 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,217 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,217 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,217 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,218 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,218 WARN L313 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,218 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,219 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,219 WARN L313 ript$VariableManager]: TermVariabe |thread0Thread1of1ForFork4_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,222 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,223 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,227 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,227 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,228 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,229 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork3_#t~malloc6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,232 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,232 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,236 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,237 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,237 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,237 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,241 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,241 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,241 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,242 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,246 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,246 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,246 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,247 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:04:35,543 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2020-12-23 13:04:35,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-23 13:04:35,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:04:35,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:04:35,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:04:35,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:04:35,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:04:35,607 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:04:35,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:04:35,608 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:04:35,631 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:04:35,634 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 255 transitions, 890 flow [2020-12-23 13:04:35,638 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 255 transitions, 890 flow [2020-12-23 13:04:35,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 255 transitions, 890 flow [2020-12-23 13:04:35,834 INFO L129 PetriNetUnfolder]: 67/316 cut-off events. [2020-12-23 13:04:35,834 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-12-23 13:04:35,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 316 events. 67/316 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 990 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 365. Up to 24 conditions per place. [2020-12-23 13:04:35,882 INFO L116 LiptonReduction]: Number of co-enabled transitions 4982 [2020-12-23 13:04:40,069 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-23 13:04:40,292 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-23 13:04:40,530 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-23 13:04:40,658 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-23 13:04:40,806 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-23 13:04:40,967 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-23 13:04:41,474 INFO L131 LiptonReduction]: Checked pairs total: 55868 [2020-12-23 13:04:41,474 INFO L133 LiptonReduction]: Total number of compositions: 87 [2020-12-23 13:04:41,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 176 transitions, 732 flow [2020-12-23 13:04:42,226 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4478 states. [2020-12-23 13:04:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states. [2020-12-23 13:04:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:04:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:42,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:42,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1918747806, now seen corresponding path program 1 times [2020-12-23 13:04:42,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:42,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311675982] [2020-12-23 13:04:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:42,581 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 13:04:42,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311675982] [2020-12-23 13:04:42,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:42,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:04:42,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275811703] [2020-12-23 13:04:42,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:04:42,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:04:42,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:04:42,620 INFO L87 Difference]: Start difference. First operand 4478 states. Second operand 5 states. [2020-12-23 13:04:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:43,067 INFO L93 Difference]: Finished difference Result 5737 states and 24083 transitions. [2020-12-23 13:04:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:04:43,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:04:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:43,148 INFO L225 Difference]: With dead ends: 5737 [2020-12-23 13:04:43,149 INFO L226 Difference]: Without dead ends: 5249 [2020-12-23 13:04:43,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2020-12-23 13:04:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 3995. [2020-12-23 13:04:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-23 13:04:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 16455 transitions. [2020-12-23 13:04:43,459 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 16455 transitions. Word has length 10 [2020-12-23 13:04:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:43,460 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 16455 transitions. [2020-12-23 13:04:43,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:04:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 16455 transitions. [2020-12-23 13:04:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:04:43,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:43,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:43,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:04:43,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:43,473 INFO L82 PathProgramCache]: Analyzing trace with hash -410908784, now seen corresponding path program 2 times [2020-12-23 13:04:43,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:43,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852987735] [2020-12-23 13:04:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:43,565 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 13:04:43,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852987735] [2020-12-23 13:04:43,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:43,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:04:43,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528196793] [2020-12-23 13:04:43,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:04:43,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:04:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:04:43,569 INFO L87 Difference]: Start difference. First operand 3995 states and 16455 transitions. Second operand 3 states. [2020-12-23 13:04:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:43,642 INFO L93 Difference]: Finished difference Result 4483 states and 17814 transitions. [2020-12-23 13:04:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:04:43,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:04:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:43,762 INFO L225 Difference]: With dead ends: 4483 [2020-12-23 13:04:43,762 INFO L226 Difference]: Without dead ends: 3995 [2020-12-23 13:04:43,765 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 13:04:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2020-12-23 13:04:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3995. [2020-12-23 13:04:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-23 13:04:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 15967 transitions. [2020-12-23 13:04:43,988 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 15967 transitions. Word has length 10 [2020-12-23 13:04:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:43,989 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 15967 transitions. [2020-12-23 13:04:43,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:04:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 15967 transitions. [2020-12-23 13:04:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:04:43,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:43,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:43,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:04:43,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:43,991 INFO L82 PathProgramCache]: Analyzing trace with hash 146714135, now seen corresponding path program 1 times [2020-12-23 13:04:43,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:43,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849693165] [2020-12-23 13:04:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:44,136 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 13:04:44,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849693165] [2020-12-23 13:04:44,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:44,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:04:44,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347772373] [2020-12-23 13:04:44,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:44,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:44,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:44,139 INFO L87 Difference]: Start difference. First operand 3995 states and 15967 transitions. Second operand 6 states. [2020-12-23 13:04:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:44,543 INFO L93 Difference]: Finished difference Result 6505 states and 27533 transitions. [2020-12-23 13:04:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:04:44,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:04:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:44,604 INFO L225 Difference]: With dead ends: 6505 [2020-12-23 13:04:44,604 INFO L226 Difference]: Without dead ends: 6505 [2020-12-23 13:04:44,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:04:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2020-12-23 13:04:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 3994. [2020-12-23 13:04:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2020-12-23 13:04:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 15966 transitions. [2020-12-23 13:04:44,950 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 15966 transitions. Word has length 11 [2020-12-23 13:04:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:44,950 INFO L481 AbstractCegarLoop]: Abstraction has 3994 states and 15966 transitions. [2020-12-23 13:04:44,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 15966 transitions. [2020-12-23 13:04:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:04:44,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:44,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:44,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:04:44,954 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1573475595, now seen corresponding path program 2 times [2020-12-23 13:04:44,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:44,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713742868] [2020-12-23 13:04:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:45,088 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 13:04:45,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713742868] [2020-12-23 13:04:45,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:45,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:04:45,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768169674] [2020-12-23 13:04:45,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:45,092 INFO L87 Difference]: Start difference. First operand 3994 states and 15966 transitions. Second operand 6 states. [2020-12-23 13:04:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:45,397 INFO L93 Difference]: Finished difference Result 5238 states and 21730 transitions. [2020-12-23 13:04:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:04:45,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:04:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:45,428 INFO L225 Difference]: With dead ends: 5238 [2020-12-23 13:04:45,428 INFO L226 Difference]: Without dead ends: 5238 [2020-12-23 13:04:45,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2020-12-23 13:04:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3980. [2020-12-23 13:04:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3980 states. [2020-12-23 13:04:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 15943 transitions. [2020-12-23 13:04:45,760 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 15943 transitions. Word has length 11 [2020-12-23 13:04:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:45,760 INFO L481 AbstractCegarLoop]: Abstraction has 3980 states and 15943 transitions. [2020-12-23 13:04:45,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 15943 transitions. [2020-12-23 13:04:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:04:45,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:45,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:45,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:04:45,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:45,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1473362807, now seen corresponding path program 1 times [2020-12-23 13:04:45,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:45,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835123996] [2020-12-23 13:04:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:45,866 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 13:04:45,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835123996] [2020-12-23 13:04:45,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:45,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:04:45,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521707340] [2020-12-23 13:04:45,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:04:45,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:45,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:04:45,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:04:45,869 INFO L87 Difference]: Start difference. First operand 3980 states and 15943 transitions. Second operand 5 states. [2020-12-23 13:04:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:46,031 INFO L93 Difference]: Finished difference Result 5159 states and 21026 transitions. [2020-12-23 13:04:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:04:46,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 13:04:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:46,059 INFO L225 Difference]: With dead ends: 5159 [2020-12-23 13:04:46,059 INFO L226 Difference]: Without dead ends: 5159 [2020-12-23 13:04:46,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2020-12-23 13:04:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 4561. [2020-12-23 13:04:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2020-12-23 13:04:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 18704 transitions. [2020-12-23 13:04:46,345 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 18704 transitions. Word has length 18 [2020-12-23 13:04:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:46,345 INFO L481 AbstractCegarLoop]: Abstraction has 4561 states and 18704 transitions. [2020-12-23 13:04:46,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:04:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 18704 transitions. [2020-12-23 13:04:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:04:46,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:46,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:46,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:04:46,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:46,351 INFO L82 PathProgramCache]: Analyzing trace with hash -540147017, now seen corresponding path program 2 times [2020-12-23 13:04:46,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:46,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841956160] [2020-12-23 13:04:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:46,383 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 13:04:46,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841956160] [2020-12-23 13:04:46,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:46,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:04:46,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422037001] [2020-12-23 13:04:46,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:04:46,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:04:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:04:46,386 INFO L87 Difference]: Start difference. First operand 4561 states and 18704 transitions. Second operand 3 states. [2020-12-23 13:04:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:46,574 INFO L93 Difference]: Finished difference Result 7157 states and 28806 transitions. [2020-12-23 13:04:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:04:46,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 13:04:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:46,636 INFO L225 Difference]: With dead ends: 7157 [2020-12-23 13:04:46,636 INFO L226 Difference]: Without dead ends: 5563 [2020-12-23 13:04:46,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:04:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2020-12-23 13:04:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 4481. [2020-12-23 13:04:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4481 states. [2020-12-23 13:04:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 17410 transitions. [2020-12-23 13:04:46,874 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 17410 transitions. Word has length 18 [2020-12-23 13:04:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:46,875 INFO L481 AbstractCegarLoop]: Abstraction has 4481 states and 17410 transitions. [2020-12-23 13:04:46,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:04:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 17410 transitions. [2020-12-23 13:04:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 13:04:46,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:46,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:46,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:04:46,879 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:46,879 INFO L82 PathProgramCache]: Analyzing trace with hash 434667714, now seen corresponding path program 1 times [2020-12-23 13:04:46,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:46,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343985115] [2020-12-23 13:04:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:46,989 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 13:04:46,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343985115] [2020-12-23 13:04:46,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:46,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:04:46,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577942371] [2020-12-23 13:04:46,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:46,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:46,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:46,996 INFO L87 Difference]: Start difference. First operand 4481 states and 17410 transitions. Second operand 6 states. [2020-12-23 13:04:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:47,389 INFO L93 Difference]: Finished difference Result 5717 states and 22451 transitions. [2020-12-23 13:04:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:04:47,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 13:04:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:47,423 INFO L225 Difference]: With dead ends: 5717 [2020-12-23 13:04:47,423 INFO L226 Difference]: Without dead ends: 5693 [2020-12-23 13:04:47,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:04:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-12-23 13:04:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 4474. [2020-12-23 13:04:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4474 states. [2020-12-23 13:04:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 17401 transitions. [2020-12-23 13:04:47,619 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 17401 transitions. Word has length 19 [2020-12-23 13:04:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:47,619 INFO L481 AbstractCegarLoop]: Abstraction has 4474 states and 17401 transitions. [2020-12-23 13:04:47,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 17401 transitions. [2020-12-23 13:04:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 13:04:47,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:47,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:47,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:04:47,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:47,623 INFO L82 PathProgramCache]: Analyzing trace with hash 780836658, now seen corresponding path program 2 times [2020-12-23 13:04:47,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:47,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725048164] [2020-12-23 13:04:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:47,715 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 13:04:47,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725048164] [2020-12-23 13:04:47,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:47,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 13:04:47,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146837887] [2020-12-23 13:04:47,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:47,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:47,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:47,718 INFO L87 Difference]: Start difference. First operand 4474 states and 17401 transitions. Second operand 6 states. [2020-12-23 13:04:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:47,845 INFO L93 Difference]: Finished difference Result 5418 states and 20587 transitions. [2020-12-23 13:04:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:47,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-23 13:04:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:47,998 INFO L225 Difference]: With dead ends: 5418 [2020-12-23 13:04:47,998 INFO L226 Difference]: Without dead ends: 5418 [2020-12-23 13:04:48,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2020-12-23 13:04:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4453. [2020-12-23 13:04:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4453 states. [2020-12-23 13:04:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 17345 transitions. [2020-12-23 13:04:48,179 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 17345 transitions. Word has length 19 [2020-12-23 13:04:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:48,179 INFO L481 AbstractCegarLoop]: Abstraction has 4453 states and 17345 transitions. [2020-12-23 13:04:48,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 17345 transitions. [2020-12-23 13:04:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 13:04:48,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:48,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:48,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:04:48,183 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash -51062012, now seen corresponding path program 1 times [2020-12-23 13:04:48,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:48,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665821237] [2020-12-23 13:04:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:48,268 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 13:04:48,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665821237] [2020-12-23 13:04:48,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:48,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:04:48,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451632178] [2020-12-23 13:04:48,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:04:48,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:48,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:04:48,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:04:48,274 INFO L87 Difference]: Start difference. First operand 4453 states and 17345 transitions. Second operand 5 states. [2020-12-23 13:04:48,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:48,439 INFO L93 Difference]: Finished difference Result 5519 states and 21448 transitions. [2020-12-23 13:04:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:04:48,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 13:04:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:48,466 INFO L225 Difference]: With dead ends: 5519 [2020-12-23 13:04:48,466 INFO L226 Difference]: Without dead ends: 5423 [2020-12-23 13:04:48,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2020-12-23 13:04:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4983. [2020-12-23 13:04:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4983 states. [2020-12-23 13:04:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 19584 transitions. [2020-12-23 13:04:48,721 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 19584 transitions. Word has length 20 [2020-12-23 13:04:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:48,721 INFO L481 AbstractCegarLoop]: Abstraction has 4983 states and 19584 transitions. [2020-12-23 13:04:48,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:04:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 19584 transitions. [2020-12-23 13:04:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 13:04:48,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:48,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:48,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:04:48,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash -878852686, now seen corresponding path program 2 times [2020-12-23 13:04:48,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:48,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005089607] [2020-12-23 13:04:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:48,765 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 13:04:48,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005089607] [2020-12-23 13:04:48,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:48,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:04:48,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128746655] [2020-12-23 13:04:48,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:04:48,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:48,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:04:48,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:04:48,767 INFO L87 Difference]: Start difference. First operand 4983 states and 19584 transitions. Second operand 4 states. [2020-12-23 13:04:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:48,889 INFO L93 Difference]: Finished difference Result 6724 states and 25076 transitions. [2020-12-23 13:04:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:48,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-23 13:04:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:48,914 INFO L225 Difference]: With dead ends: 6724 [2020-12-23 13:04:48,914 INFO L226 Difference]: Without dead ends: 5604 [2020-12-23 13:04:48,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:04:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2020-12-23 13:04:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5230. [2020-12-23 13:04:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5230 states. [2020-12-23 13:04:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 19603 transitions. [2020-12-23 13:04:49,086 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 19603 transitions. Word has length 20 [2020-12-23 13:04:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:49,087 INFO L481 AbstractCegarLoop]: Abstraction has 5230 states and 19603 transitions. [2020-12-23 13:04:49,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:04:49,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 19603 transitions. [2020-12-23 13:04:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:04:49,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:49,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:49,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:04:49,092 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1476107581, now seen corresponding path program 1 times [2020-12-23 13:04:49,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:49,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067768805] [2020-12-23 13:04:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:49,318 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 13:04:49,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067768805] [2020-12-23 13:04:49,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:49,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:04:49,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407353512] [2020-12-23 13:04:49,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:49,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:49,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:49,321 INFO L87 Difference]: Start difference. First operand 5230 states and 19603 transitions. Second operand 6 states. [2020-12-23 13:04:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:49,551 INFO L93 Difference]: Finished difference Result 5940 states and 21833 transitions. [2020-12-23 13:04:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:04:49,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 13:04:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:49,570 INFO L225 Difference]: With dead ends: 5940 [2020-12-23 13:04:49,571 INFO L226 Difference]: Without dead ends: 5718 [2020-12-23 13:04:49,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:04:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2020-12-23 13:04:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4887. [2020-12-23 13:04:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4887 states. [2020-12-23 13:04:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 18065 transitions. [2020-12-23 13:04:49,921 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 18065 transitions. Word has length 21 [2020-12-23 13:04:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:49,922 INFO L481 AbstractCegarLoop]: Abstraction has 4887 states and 18065 transitions. [2020-12-23 13:04:49,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 18065 transitions. [2020-12-23 13:04:49,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:04:49,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:49,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:49,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:04:49,926 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:49,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash -658120403, now seen corresponding path program 1 times [2020-12-23 13:04:49,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:49,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122090431] [2020-12-23 13:04:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:50,004 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 13:04:50,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122090431] [2020-12-23 13:04:50,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:50,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 13:04:50,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933015761] [2020-12-23 13:04:50,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:50,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:50,006 INFO L87 Difference]: Start difference. First operand 4887 states and 18065 transitions. Second operand 6 states. [2020-12-23 13:04:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:50,139 INFO L93 Difference]: Finished difference Result 5654 states and 20566 transitions. [2020-12-23 13:04:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:50,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 13:04:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:50,155 INFO L225 Difference]: With dead ends: 5654 [2020-12-23 13:04:50,155 INFO L226 Difference]: Without dead ends: 5654 [2020-12-23 13:04:50,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2020-12-23 13:04:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4899. [2020-12-23 13:04:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4899 states. [2020-12-23 13:04:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 18097 transitions. [2020-12-23 13:04:50,327 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 18097 transitions. Word has length 21 [2020-12-23 13:04:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:50,328 INFO L481 AbstractCegarLoop]: Abstraction has 4899 states and 18097 transitions. [2020-12-23 13:04:50,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 18097 transitions. [2020-12-23 13:04:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:04:50,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:50,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:50,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 13:04:50,336 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1403528625, now seen corresponding path program 2 times [2020-12-23 13:04:50,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:50,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282522854] [2020-12-23 13:04:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:50,537 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 13:04:50,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282522854] [2020-12-23 13:04:50,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:50,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:04:50,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163737086] [2020-12-23 13:04:50,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:04:50,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:50,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:04:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:50,545 INFO L87 Difference]: Start difference. First operand 4899 states and 18097 transitions. Second operand 7 states. [2020-12-23 13:04:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:50,666 INFO L93 Difference]: Finished difference Result 5577 states and 20321 transitions. [2020-12-23 13:04:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:50,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-23 13:04:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:50,683 INFO L225 Difference]: With dead ends: 5577 [2020-12-23 13:04:50,683 INFO L226 Difference]: Without dead ends: 5577 [2020-12-23 13:04:50,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:04:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2020-12-23 13:04:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 4839. [2020-12-23 13:04:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-12-23 13:04:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 17895 transitions. [2020-12-23 13:04:50,820 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 17895 transitions. Word has length 21 [2020-12-23 13:04:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:50,821 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 17895 transitions. [2020-12-23 13:04:50,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:04:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 17895 transitions. [2020-12-23 13:04:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 13:04:50,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:50,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:50,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 13:04:50,825 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 479765811, now seen corresponding path program 2 times [2020-12-23 13:04:50,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:50,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936183228] [2020-12-23 13:04:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:50,887 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 13:04:50,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936183228] [2020-12-23 13:04:50,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:50,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 13:04:50,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571138088] [2020-12-23 13:04:50,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:04:50,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:04:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:50,889 INFO L87 Difference]: Start difference. First operand 4839 states and 17895 transitions. Second operand 7 states. [2020-12-23 13:04:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:51,048 INFO L93 Difference]: Finished difference Result 5375 states and 19365 transitions. [2020-12-23 13:04:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:04:51,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-23 13:04:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:51,130 INFO L225 Difference]: With dead ends: 5375 [2020-12-23 13:04:51,130 INFO L226 Difference]: Without dead ends: 5140 [2020-12-23 13:04:51,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:04:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2020-12-23 13:04:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 4770. [2020-12-23 13:04:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4770 states. [2020-12-23 13:04:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 17663 transitions. [2020-12-23 13:04:51,281 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 17663 transitions. Word has length 21 [2020-12-23 13:04:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:51,281 INFO L481 AbstractCegarLoop]: Abstraction has 4770 states and 17663 transitions. [2020-12-23 13:04:51,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:04:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 17663 transitions. [2020-12-23 13:04:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 13:04:51,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:51,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:51,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 13:04:51,287 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2022418832, now seen corresponding path program 1 times [2020-12-23 13:04:51,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:51,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719511372] [2020-12-23 13:04:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:51,395 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 13:04:51,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719511372] [2020-12-23 13:04:51,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:51,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:04:51,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853985297] [2020-12-23 13:04:51,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:04:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:04:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:51,398 INFO L87 Difference]: Start difference. First operand 4770 states and 17663 transitions. Second operand 8 states. [2020-12-23 13:04:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:51,812 INFO L93 Difference]: Finished difference Result 6062 states and 22739 transitions. [2020-12-23 13:04:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:04:51,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-23 13:04:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:51,826 INFO L225 Difference]: With dead ends: 6062 [2020-12-23 13:04:51,826 INFO L226 Difference]: Without dead ends: 5902 [2020-12-23 13:04:51,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:04:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2020-12-23 13:04:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5126. [2020-12-23 13:04:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5126 states. [2020-12-23 13:04:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 19402 transitions. [2020-12-23 13:04:52,098 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 19402 transitions. Word has length 22 [2020-12-23 13:04:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:52,098 INFO L481 AbstractCegarLoop]: Abstraction has 5126 states and 19402 transitions. [2020-12-23 13:04:52,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:04:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 19402 transitions. [2020-12-23 13:04:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 13:04:52,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:52,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:52,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 13:04:52,106 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:52,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1501683984, now seen corresponding path program 2 times [2020-12-23 13:04:52,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:52,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138827381] [2020-12-23 13:04:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:52,278 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 13:04:52,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138827381] [2020-12-23 13:04:52,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:52,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:04:52,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672476256] [2020-12-23 13:04:52,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:04:52,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:52,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:04:52,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:04:52,283 INFO L87 Difference]: Start difference. First operand 5126 states and 19402 transitions. Second operand 9 states. [2020-12-23 13:04:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:52,687 INFO L93 Difference]: Finished difference Result 7825 states and 30453 transitions. [2020-12-23 13:04:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:04:52,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 13:04:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:52,714 INFO L225 Difference]: With dead ends: 7825 [2020-12-23 13:04:52,714 INFO L226 Difference]: Without dead ends: 7665 [2020-12-23 13:04:52,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:04:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2020-12-23 13:04:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 5124. [2020-12-23 13:04:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5124 states. [2020-12-23 13:04:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 19398 transitions. [2020-12-23 13:04:52,929 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 19398 transitions. Word has length 22 [2020-12-23 13:04:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:52,929 INFO L481 AbstractCegarLoop]: Abstraction has 5124 states and 19398 transitions. [2020-12-23 13:04:52,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:04:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 19398 transitions. [2020-12-23 13:04:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 13:04:52,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:52,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:52,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 13:04:52,937 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:52,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:52,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1670308188, now seen corresponding path program 3 times [2020-12-23 13:04:52,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:52,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5892724] [2020-12-23 13:04:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:53,084 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 13:04:53,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5892724] [2020-12-23 13:04:53,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:53,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:04:53,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911237495] [2020-12-23 13:04:53,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:04:53,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:53,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:04:53,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:04:53,086 INFO L87 Difference]: Start difference. First operand 5124 states and 19398 transitions. Second operand 9 states. [2020-12-23 13:04:53,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:53,469 INFO L93 Difference]: Finished difference Result 6406 states and 24448 transitions. [2020-12-23 13:04:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:04:53,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-23 13:04:53,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:53,494 INFO L225 Difference]: With dead ends: 6406 [2020-12-23 13:04:53,494 INFO L226 Difference]: Without dead ends: 6246 [2020-12-23 13:04:53,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:04:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2020-12-23 13:04:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5120. [2020-12-23 13:04:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-23 13:04:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 19386 transitions. [2020-12-23 13:04:53,686 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 19386 transitions. Word has length 22 [2020-12-23 13:04:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:53,686 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 19386 transitions. [2020-12-23 13:04:53,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:04:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 19386 transitions. [2020-12-23 13:04:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 13:04:53,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:53,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:53,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 13:04:53,693 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1267239594, now seen corresponding path program 4 times [2020-12-23 13:04:53,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:53,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557167431] [2020-12-23 13:04:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:53,938 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 13:04:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557167431] [2020-12-23 13:04:53,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:53,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:04:53,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085704433] [2020-12-23 13:04:53,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:04:53,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:53,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:04:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:04:53,941 INFO L87 Difference]: Start difference. First operand 5120 states and 19386 transitions. Second operand 11 states. [2020-12-23 13:04:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:54,850 INFO L93 Difference]: Finished difference Result 6594 states and 25441 transitions. [2020-12-23 13:04:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 13:04:54,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-23 13:04:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:54,873 INFO L225 Difference]: With dead ends: 6594 [2020-12-23 13:04:54,873 INFO L226 Difference]: Without dead ends: 6496 [2020-12-23 13:04:54,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-23 13:04:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2020-12-23 13:04:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 5108. [2020-12-23 13:04:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5108 states. [2020-12-23 13:04:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 19355 transitions. [2020-12-23 13:04:55,068 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 19355 transitions. Word has length 22 [2020-12-23 13:04:55,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:55,070 INFO L481 AbstractCegarLoop]: Abstraction has 5108 states and 19355 transitions. [2020-12-23 13:04:55,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:04:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 19355 transitions. [2020-12-23 13:04:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:55,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:55,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:55,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 13:04:55,079 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash -335513452, now seen corresponding path program 1 times [2020-12-23 13:04:55,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:55,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046510482] [2020-12-23 13:04:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:55,151 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 13:04:55,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046510482] [2020-12-23 13:04:55,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:55,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:04:55,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972727503] [2020-12-23 13:04:55,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:04:55,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:55,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:04:55,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:04:55,154 INFO L87 Difference]: Start difference. First operand 5108 states and 19355 transitions. Second operand 5 states. [2020-12-23 13:04:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:55,314 INFO L93 Difference]: Finished difference Result 5740 states and 21369 transitions. [2020-12-23 13:04:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:04:55,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-23 13:04:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:55,334 INFO L225 Difference]: With dead ends: 5740 [2020-12-23 13:04:55,334 INFO L226 Difference]: Without dead ends: 5538 [2020-12-23 13:04:55,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2020-12-23 13:04:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5288. [2020-12-23 13:04:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-12-23 13:04:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 19964 transitions. [2020-12-23 13:04:55,519 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 19964 transitions. Word has length 23 [2020-12-23 13:04:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:55,519 INFO L481 AbstractCegarLoop]: Abstraction has 5288 states and 19964 transitions. [2020-12-23 13:04:55,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:04:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 19964 transitions. [2020-12-23 13:04:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:55,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:55,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 13:04:55,530 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:55,530 INFO L82 PathProgramCache]: Analyzing trace with hash 654731046, now seen corresponding path program 2 times [2020-12-23 13:04:55,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:55,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069586489] [2020-12-23 13:04:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:55,603 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 13:04:55,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069586489] [2020-12-23 13:04:55,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:55,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:04:55,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759038402] [2020-12-23 13:04:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:55,607 INFO L87 Difference]: Start difference. First operand 5288 states and 19964 transitions. Second operand 6 states. [2020-12-23 13:04:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:55,810 INFO L93 Difference]: Finished difference Result 5634 states and 20831 transitions. [2020-12-23 13:04:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:04:55,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-23 13:04:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:55,824 INFO L225 Difference]: With dead ends: 5634 [2020-12-23 13:04:55,824 INFO L226 Difference]: Without dead ends: 5432 [2020-12-23 13:04:55,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:04:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5432 states. [2020-12-23 13:04:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5432 to 5044. [2020-12-23 13:04:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5044 states. [2020-12-23 13:04:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 18964 transitions. [2020-12-23 13:04:55,976 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 18964 transitions. Word has length 23 [2020-12-23 13:04:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:55,976 INFO L481 AbstractCegarLoop]: Abstraction has 5044 states and 18964 transitions. [2020-12-23 13:04:55,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 18964 transitions. [2020-12-23 13:04:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:55,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:55,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:55,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 13:04:55,985 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1393943423, now seen corresponding path program 1 times [2020-12-23 13:04:55,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:55,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786610507] [2020-12-23 13:04:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:56,041 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 13:04:56,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786610507] [2020-12-23 13:04:56,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:56,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 13:04:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486676303] [2020-12-23 13:04:56,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:04:56,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:04:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:04:56,044 INFO L87 Difference]: Start difference. First operand 5044 states and 18964 transitions. Second operand 6 states. [2020-12-23 13:04:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:56,171 INFO L93 Difference]: Finished difference Result 5955 states and 22016 transitions. [2020-12-23 13:04:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:56,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-23 13:04:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:56,191 INFO L225 Difference]: With dead ends: 5955 [2020-12-23 13:04:56,191 INFO L226 Difference]: Without dead ends: 5444 [2020-12-23 13:04:56,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2020-12-23 13:04:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 4599. [2020-12-23 13:04:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-12-23 13:04:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 17009 transitions. [2020-12-23 13:04:56,343 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 17009 transitions. Word has length 23 [2020-12-23 13:04:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:56,343 INFO L481 AbstractCegarLoop]: Abstraction has 4599 states and 17009 transitions. [2020-12-23 13:04:56,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:04:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 17009 transitions. [2020-12-23 13:04:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:56,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:56,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:56,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 13:04:56,350 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1259322281, now seen corresponding path program 2 times [2020-12-23 13:04:56,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:56,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813554742] [2020-12-23 13:04:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:56,434 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 13:04:56,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813554742] [2020-12-23 13:04:56,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:56,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:04:56,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692900688] [2020-12-23 13:04:56,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:04:56,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:56,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:04:56,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:04:56,436 INFO L87 Difference]: Start difference. First operand 4599 states and 17009 transitions. Second operand 7 states. [2020-12-23 13:04:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:56,602 INFO L93 Difference]: Finished difference Result 5350 states and 19634 transitions. [2020-12-23 13:04:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:04:56,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 13:04:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:56,616 INFO L225 Difference]: With dead ends: 5350 [2020-12-23 13:04:56,616 INFO L226 Difference]: Without dead ends: 5181 [2020-12-23 13:04:56,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:04:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2020-12-23 13:04:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 4587. [2020-12-23 13:04:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4587 states. [2020-12-23 13:04:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 16982 transitions. [2020-12-23 13:04:56,740 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 16982 transitions. Word has length 23 [2020-12-23 13:04:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:56,741 INFO L481 AbstractCegarLoop]: Abstraction has 4587 states and 16982 transitions. [2020-12-23 13:04:56,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:04:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 16982 transitions. [2020-12-23 13:04:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:56,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:56,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:56,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 13:04:56,748 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -337085191, now seen corresponding path program 3 times [2020-12-23 13:04:56,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:56,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205966936] [2020-12-23 13:04:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:56,834 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 13:04:56,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205966936] [2020-12-23 13:04:56,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:56,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:04:56,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783576386] [2020-12-23 13:04:56,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:04:56,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:56,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:04:56,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:56,837 INFO L87 Difference]: Start difference. First operand 4587 states and 16982 transitions. Second operand 8 states. [2020-12-23 13:04:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:57,174 INFO L93 Difference]: Finished difference Result 6441 states and 23994 transitions. [2020-12-23 13:04:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:04:57,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 13:04:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:57,191 INFO L225 Difference]: With dead ends: 6441 [2020-12-23 13:04:57,192 INFO L226 Difference]: Without dead ends: 6333 [2020-12-23 13:04:57,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:04:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2020-12-23 13:04:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 4776. [2020-12-23 13:04:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4776 states. [2020-12-23 13:04:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 17749 transitions. [2020-12-23 13:04:57,318 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 17749 transitions. Word has length 23 [2020-12-23 13:04:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:57,319 INFO L481 AbstractCegarLoop]: Abstraction has 4776 states and 17749 transitions. [2020-12-23 13:04:57,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:04:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 17749 transitions. [2020-12-23 13:04:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:57,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:57,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 13:04:57,325 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:57,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1845797673, now seen corresponding path program 4 times [2020-12-23 13:04:57,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:57,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655960257] [2020-12-23 13:04:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:57,425 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 13:04:57,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655960257] [2020-12-23 13:04:57,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:57,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:04:57,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996532149] [2020-12-23 13:04:57,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:04:57,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:57,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:04:57,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:04:57,427 INFO L87 Difference]: Start difference. First operand 4776 states and 17749 transitions. Second operand 8 states. [2020-12-23 13:04:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:57,742 INFO L93 Difference]: Finished difference Result 5607 states and 20671 transitions. [2020-12-23 13:04:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:04:57,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 13:04:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:57,756 INFO L225 Difference]: With dead ends: 5607 [2020-12-23 13:04:57,757 INFO L226 Difference]: Without dead ends: 5499 [2020-12-23 13:04:57,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:04:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2020-12-23 13:04:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 4744. [2020-12-23 13:04:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4744 states. [2020-12-23 13:04:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 17579 transitions. [2020-12-23 13:04:57,873 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 17579 transitions. Word has length 23 [2020-12-23 13:04:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:57,873 INFO L481 AbstractCegarLoop]: Abstraction has 4744 states and 17579 transitions. [2020-12-23 13:04:57,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:04:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 17579 transitions. [2020-12-23 13:04:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:57,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:57,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:57,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 13:04:57,879 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1362361899, now seen corresponding path program 1 times [2020-12-23 13:04:57,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:57,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197460159] [2020-12-23 13:04:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:58,149 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 13:04:58,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197460159] [2020-12-23 13:04:58,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:58,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:04:58,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060683587] [2020-12-23 13:04:58,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:04:58,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:58,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:04:58,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:04:58,151 INFO L87 Difference]: Start difference. First operand 4744 states and 17579 transitions. Second operand 11 states. [2020-12-23 13:04:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:59,112 INFO L93 Difference]: Finished difference Result 5846 states and 21883 transitions. [2020-12-23 13:04:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:04:59,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-12-23 13:04:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:59,125 INFO L225 Difference]: With dead ends: 5846 [2020-12-23 13:04:59,126 INFO L226 Difference]: Without dead ends: 5680 [2020-12-23 13:04:59,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-23 13:04:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2020-12-23 13:04:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 4707. [2020-12-23 13:04:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-12-23 13:04:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 17526 transitions. [2020-12-23 13:04:59,251 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 17526 transitions. Word has length 23 [2020-12-23 13:04:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:59,251 INFO L481 AbstractCegarLoop]: Abstraction has 4707 states and 17526 transitions. [2020-12-23 13:04:59,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:04:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 17526 transitions. [2020-12-23 13:04:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:59,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:59,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 13:04:59,256 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1508198191, now seen corresponding path program 5 times [2020-12-23 13:04:59,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:59,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111891950] [2020-12-23 13:04:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:04:59,393 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 13:04:59,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111891950] [2020-12-23 13:04:59,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:04:59,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:04:59,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70964888] [2020-12-23 13:04:59,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:04:59,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:04:59,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:04:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:04:59,395 INFO L87 Difference]: Start difference. First operand 4707 states and 17526 transitions. Second operand 10 states. [2020-12-23 13:04:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:04:59,850 INFO L93 Difference]: Finished difference Result 5834 states and 21729 transitions. [2020-12-23 13:04:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:04:59,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-12-23 13:04:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:04:59,864 INFO L225 Difference]: With dead ends: 5834 [2020-12-23 13:04:59,864 INFO L226 Difference]: Without dead ends: 5792 [2020-12-23 13:04:59,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:04:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-12-23 13:04:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 4835. [2020-12-23 13:04:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2020-12-23 13:04:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 18085 transitions. [2020-12-23 13:04:59,955 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 18085 transitions. Word has length 23 [2020-12-23 13:04:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:04:59,955 INFO L481 AbstractCegarLoop]: Abstraction has 4835 states and 18085 transitions. [2020-12-23 13:04:59,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:04:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 18085 transitions. [2020-12-23 13:04:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:04:59,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:04:59,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:04:59,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 13:04:59,960 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:04:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:04:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1172688247, now seen corresponding path program 6 times [2020-12-23 13:04:59,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:04:59,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012677653] [2020-12-23 13:04:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:04:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:00,061 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 13:05:00,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012677653] [2020-12-23 13:05:00,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:00,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:05:00,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495796583] [2020-12-23 13:05:00,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:05:00,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:05:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:05:00,063 INFO L87 Difference]: Start difference. First operand 4835 states and 18085 transitions. Second operand 8 states. [2020-12-23 13:05:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:00,228 INFO L93 Difference]: Finished difference Result 4832 states and 18017 transitions. [2020-12-23 13:05:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:05:00,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 13:05:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:00,238 INFO L225 Difference]: With dead ends: 4832 [2020-12-23 13:05:00,238 INFO L226 Difference]: Without dead ends: 4832 [2020-12-23 13:05:00,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-12-23 13:05:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4441. [2020-12-23 13:05:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4441 states. [2020-12-23 13:05:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 16520 transitions. [2020-12-23 13:05:00,316 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 16520 transitions. Word has length 23 [2020-12-23 13:05:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:00,317 INFO L481 AbstractCegarLoop]: Abstraction has 4441 states and 16520 transitions. [2020-12-23 13:05:00,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:05:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 16520 transitions. [2020-12-23 13:05:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 13:05:00,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:00,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:00,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 13:05:00,321 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash -28113609, now seen corresponding path program 1 times [2020-12-23 13:05:00,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:00,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570165675] [2020-12-23 13:05:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:00,442 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 13:05:00,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570165675] [2020-12-23 13:05:00,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:00,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:05:00,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776692350] [2020-12-23 13:05:00,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:05:00,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:05:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:05:00,444 INFO L87 Difference]: Start difference. First operand 4441 states and 16520 transitions. Second operand 8 states. [2020-12-23 13:05:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:00,630 INFO L93 Difference]: Finished difference Result 4773 states and 17401 transitions. [2020-12-23 13:05:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:00,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-23 13:05:00,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:00,643 INFO L225 Difference]: With dead ends: 4773 [2020-12-23 13:05:00,643 INFO L226 Difference]: Without dead ends: 4444 [2020-12-23 13:05:00,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-12-23 13:05:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3748. [2020-12-23 13:05:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3748 states. [2020-12-23 13:05:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 13965 transitions. [2020-12-23 13:05:00,726 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 13965 transitions. Word has length 23 [2020-12-23 13:05:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:00,726 INFO L481 AbstractCegarLoop]: Abstraction has 3748 states and 13965 transitions. [2020-12-23 13:05:00,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:05:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 13965 transitions. [2020-12-23 13:05:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 13:05:00,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:00,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:00,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 13:05:00,731 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:00,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2056704833, now seen corresponding path program 1 times [2020-12-23 13:05:00,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:00,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689590954] [2020-12-23 13:05:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:01,070 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 13:05:01,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689590954] [2020-12-23 13:05:01,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:01,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:01,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394262372] [2020-12-23 13:05:01,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:01,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:01,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:01,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:01,072 INFO L87 Difference]: Start difference. First operand 3748 states and 13965 transitions. Second operand 12 states. [2020-12-23 13:05:01,650 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-23 13:05:01,909 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-23 13:05:02,030 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-12-23 13:05:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:02,303 INFO L93 Difference]: Finished difference Result 4511 states and 17017 transitions. [2020-12-23 13:05:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 13:05:02,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-12-23 13:05:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:02,314 INFO L225 Difference]: With dead ends: 4511 [2020-12-23 13:05:02,314 INFO L226 Difference]: Without dead ends: 4283 [2020-12-23 13:05:02,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:05:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2020-12-23 13:05:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3048. [2020-12-23 13:05:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3048 states. [2020-12-23 13:05:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 11102 transitions. [2020-12-23 13:05:02,377 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 11102 transitions. Word has length 25 [2020-12-23 13:05:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:02,377 INFO L481 AbstractCegarLoop]: Abstraction has 3048 states and 11102 transitions. [2020-12-23 13:05:02,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 11102 transitions. [2020-12-23 13:05:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:02,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:02,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:02,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 13:05:02,382 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1187319537, now seen corresponding path program 1 times [2020-12-23 13:05:02,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:02,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273550523] [2020-12-23 13:05:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:02,491 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 13:05:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273550523] [2020-12-23 13:05:02,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:02,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:05:02,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769995449] [2020-12-23 13:05:02,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:05:02,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:02,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:05:02,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:05:02,493 INFO L87 Difference]: Start difference. First operand 3048 states and 11102 transitions. Second operand 8 states. [2020-12-23 13:05:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:02,948 INFO L93 Difference]: Finished difference Result 3362 states and 12023 transitions. [2020-12-23 13:05:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:05:02,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-23 13:05:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:02,956 INFO L225 Difference]: With dead ends: 3362 [2020-12-23 13:05:02,956 INFO L226 Difference]: Without dead ends: 3242 [2020-12-23 13:05:02,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:05:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2020-12-23 13:05:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2875. [2020-12-23 13:05:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2020-12-23 13:05:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 10403 transitions. [2020-12-23 13:05:03,007 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 10403 transitions. Word has length 26 [2020-12-23 13:05:03,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:03,007 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 10403 transitions. [2020-12-23 13:05:03,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:05:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 10403 transitions. [2020-12-23 13:05:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:03,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:03,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:03,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 13:05:03,011 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:03,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1028221071, now seen corresponding path program 2 times [2020-12-23 13:05:03,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:03,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804677826] [2020-12-23 13:05:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:03,205 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 13:05:03,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804677826] [2020-12-23 13:05:03,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:03,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:05:03,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799463871] [2020-12-23 13:05:03,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:05:03,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:03,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:05:03,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:05:03,207 INFO L87 Difference]: Start difference. First operand 2875 states and 10403 transitions. Second operand 9 states. [2020-12-23 13:05:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:03,716 INFO L93 Difference]: Finished difference Result 3797 states and 13773 transitions. [2020-12-23 13:05:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 13:05:03,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-23 13:05:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:03,724 INFO L225 Difference]: With dead ends: 3797 [2020-12-23 13:05:03,725 INFO L226 Difference]: Without dead ends: 3725 [2020-12-23 13:05:03,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2020-12-23 13:05:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3043. [2020-12-23 13:05:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-12-23 13:05:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 11114 transitions. [2020-12-23 13:05:03,800 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 11114 transitions. Word has length 26 [2020-12-23 13:05:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:03,800 INFO L481 AbstractCegarLoop]: Abstraction has 3043 states and 11114 transitions. [2020-12-23 13:05:03,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:05:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 11114 transitions. [2020-12-23 13:05:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:03,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:03,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:03,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 13:05:03,806 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:03,807 INFO L82 PathProgramCache]: Analyzing trace with hash 184481335, now seen corresponding path program 1 times [2020-12-23 13:05:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608475717] [2020-12-23 13:05:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:03,992 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 13:05:03,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608475717] [2020-12-23 13:05:03,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:03,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:05:03,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852194052] [2020-12-23 13:05:03,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:05:03,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:03,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:05:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:05:03,994 INFO L87 Difference]: Start difference. First operand 3043 states and 11114 transitions. Second operand 9 states. [2020-12-23 13:05:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:04,507 INFO L93 Difference]: Finished difference Result 3389 states and 12128 transitions. [2020-12-23 13:05:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:04,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-23 13:05:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:04,515 INFO L225 Difference]: With dead ends: 3389 [2020-12-23 13:05:04,516 INFO L226 Difference]: Without dead ends: 3267 [2020-12-23 13:05:04,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-12-23 13:05:04,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2868. [2020-12-23 13:05:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2868 states. [2020-12-23 13:05:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 10386 transitions. [2020-12-23 13:05:04,566 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 10386 transitions. Word has length 26 [2020-12-23 13:05:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:04,566 INFO L481 AbstractCegarLoop]: Abstraction has 2868 states and 10386 transitions. [2020-12-23 13:05:04,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:05:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 10386 transitions. [2020-12-23 13:05:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:04,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:04,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:04,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 13:05:04,571 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:04,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2021023853, now seen corresponding path program 3 times [2020-12-23 13:05:04,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:04,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175251369] [2020-12-23 13:05:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:04,704 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 13:05:04,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175251369] [2020-12-23 13:05:04,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:04,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:04,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088069596] [2020-12-23 13:05:04,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:04,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:04,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:04,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:04,707 INFO L87 Difference]: Start difference. First operand 2868 states and 10386 transitions. Second operand 10 states. [2020-12-23 13:05:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:05,060 INFO L93 Difference]: Finished difference Result 4342 states and 16142 transitions. [2020-12-23 13:05:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:05,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 13:05:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:05,073 INFO L225 Difference]: With dead ends: 4342 [2020-12-23 13:05:05,074 INFO L226 Difference]: Without dead ends: 4270 [2020-12-23 13:05:05,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:05:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2020-12-23 13:05:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3030. [2020-12-23 13:05:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2020-12-23 13:05:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 11079 transitions. [2020-12-23 13:05:05,167 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 11079 transitions. Word has length 26 [2020-12-23 13:05:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:05,167 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 11079 transitions. [2020-12-23 13:05:05,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 11079 transitions. [2020-12-23 13:05:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:05,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:05,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:05,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-23 13:05:05,174 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:05,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1061241037, now seen corresponding path program 2 times [2020-12-23 13:05:05,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:05,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466872350] [2020-12-23 13:05:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:05,400 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 13:05:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466872350] [2020-12-23 13:05:05,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:05,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:05,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450623534] [2020-12-23 13:05:05,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:05,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:05,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:05,402 INFO L87 Difference]: Start difference. First operand 3030 states and 11079 transitions. Second operand 10 states. [2020-12-23 13:05:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:05,984 INFO L93 Difference]: Finished difference Result 3755 states and 13672 transitions. [2020-12-23 13:05:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:05,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 13:05:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:05,993 INFO L225 Difference]: With dead ends: 3755 [2020-12-23 13:05:05,994 INFO L226 Difference]: Without dead ends: 3634 [2020-12-23 13:05:05,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:05:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2020-12-23 13:05:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3010. [2020-12-23 13:05:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2020-12-23 13:05:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 11010 transitions. [2020-12-23 13:05:06,141 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 11010 transitions. Word has length 26 [2020-12-23 13:05:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:06,141 INFO L481 AbstractCegarLoop]: Abstraction has 3010 states and 11010 transitions. [2020-12-23 13:05:06,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 11010 transitions. [2020-12-23 13:05:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:06,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:06,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-23 13:05:06,146 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1632342331, now seen corresponding path program 4 times [2020-12-23 13:05:06,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:06,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881446309] [2020-12-23 13:05:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:06,276 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 13:05:06,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881446309] [2020-12-23 13:05:06,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:06,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:06,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768250922] [2020-12-23 13:05:06,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:06,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:06,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:06,278 INFO L87 Difference]: Start difference. First operand 3010 states and 11010 transitions. Second operand 10 states. [2020-12-23 13:05:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:06,581 INFO L93 Difference]: Finished difference Result 3360 states and 12055 transitions. [2020-12-23 13:05:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:06,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 13:05:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:06,589 INFO L225 Difference]: With dead ends: 3360 [2020-12-23 13:05:06,589 INFO L226 Difference]: Without dead ends: 3240 [2020-12-23 13:05:06,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2020-12-23 13:05:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2856. [2020-12-23 13:05:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-12-23 13:05:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 10348 transitions. [2020-12-23 13:05:06,659 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 10348 transitions. Word has length 26 [2020-12-23 13:05:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:06,659 INFO L481 AbstractCegarLoop]: Abstraction has 2856 states and 10348 transitions. [2020-12-23 13:05:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 10348 transitions. [2020-12-23 13:05:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:06,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:06,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:06,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-23 13:05:06,666 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1015231137, now seen corresponding path program 5 times [2020-12-23 13:05:06,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:06,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871391113] [2020-12-23 13:05:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:06,951 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 13:05:06,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871391113] [2020-12-23 13:05:06,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:06,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:06,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448548163] [2020-12-23 13:05:06,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:06,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:06,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:06,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:06,953 INFO L87 Difference]: Start difference. First operand 2856 states and 10348 transitions. Second operand 12 states. [2020-12-23 13:05:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:07,487 INFO L93 Difference]: Finished difference Result 3631 states and 13193 transitions. [2020-12-23 13:05:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:07,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-12-23 13:05:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:07,497 INFO L225 Difference]: With dead ends: 3631 [2020-12-23 13:05:07,497 INFO L226 Difference]: Without dead ends: 3559 [2020-12-23 13:05:07,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2020-12-23 13:05:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 2905. [2020-12-23 13:05:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2020-12-23 13:05:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 10605 transitions. [2020-12-23 13:05:07,550 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 10605 transitions. Word has length 26 [2020-12-23 13:05:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:07,550 INFO L481 AbstractCegarLoop]: Abstraction has 2905 states and 10605 transitions. [2020-12-23 13:05:07,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 10605 transitions. [2020-12-23 13:05:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:07,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:07,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:07,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-23 13:05:07,554 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:07,555 INFO L82 PathProgramCache]: Analyzing trace with hash -893726613, now seen corresponding path program 3 times [2020-12-23 13:05:07,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:07,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595076518] [2020-12-23 13:05:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:07,818 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 13:05:07,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595076518] [2020-12-23 13:05:07,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:07,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:07,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525815241] [2020-12-23 13:05:07,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:07,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:07,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:07,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:07,819 INFO L87 Difference]: Start difference. First operand 2905 states and 10605 transitions. Second operand 12 states. [2020-12-23 13:05:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:08,391 INFO L93 Difference]: Finished difference Result 3537 states and 12449 transitions. [2020-12-23 13:05:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:05:08,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-12-23 13:05:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:08,400 INFO L225 Difference]: With dead ends: 3537 [2020-12-23 13:05:08,401 INFO L226 Difference]: Without dead ends: 3439 [2020-12-23 13:05:08,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-12-23 13:05:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2715. [2020-12-23 13:05:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-12-23 13:05:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 9581 transitions. [2020-12-23 13:05:08,451 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 9581 transitions. Word has length 26 [2020-12-23 13:05:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:08,451 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states and 9581 transitions. [2020-12-23 13:05:08,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 9581 transitions. [2020-12-23 13:05:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:08,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:08,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:08,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-23 13:05:08,456 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:08,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1095200096, now seen corresponding path program 1 times [2020-12-23 13:05:08,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:08,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572791065] [2020-12-23 13:05:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:08,611 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 13:05:08,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572791065] [2020-12-23 13:05:08,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:08,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:08,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353150835] [2020-12-23 13:05:08,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:08,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:08,613 INFO L87 Difference]: Start difference. First operand 2715 states and 9581 transitions. Second operand 10 states. [2020-12-23 13:05:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:09,112 INFO L93 Difference]: Finished difference Result 3947 states and 13862 transitions. [2020-12-23 13:05:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:09,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 13:05:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:09,123 INFO L225 Difference]: With dead ends: 3947 [2020-12-23 13:05:09,124 INFO L226 Difference]: Without dead ends: 3849 [2020-12-23 13:05:09,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-12-23 13:05:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 2715. [2020-12-23 13:05:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-12-23 13:05:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 9581 transitions. [2020-12-23 13:05:09,184 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 9581 transitions. Word has length 26 [2020-12-23 13:05:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:09,184 INFO L481 AbstractCegarLoop]: Abstraction has 2715 states and 9581 transitions. [2020-12-23 13:05:09,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 9581 transitions. [2020-12-23 13:05:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 13:05:09,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:09,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:09,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-23 13:05:09,189 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 43549556, now seen corresponding path program 2 times [2020-12-23 13:05:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:09,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106629131] [2020-12-23 13:05:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:09,337 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 13:05:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106629131] [2020-12-23 13:05:09,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:09,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538911719] [2020-12-23 13:05:09,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:09,340 INFO L87 Difference]: Start difference. First operand 2715 states and 9581 transitions. Second operand 10 states. [2020-12-23 13:05:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:09,831 INFO L93 Difference]: Finished difference Result 3151 states and 10988 transitions. [2020-12-23 13:05:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:09,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-23 13:05:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:09,838 INFO L225 Difference]: With dead ends: 3151 [2020-12-23 13:05:09,839 INFO L226 Difference]: Without dead ends: 3053 [2020-12-23 13:05:09,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:05:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2020-12-23 13:05:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2389. [2020-12-23 13:05:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2020-12-23 13:05:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 8340 transitions. [2020-12-23 13:05:09,881 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 8340 transitions. Word has length 26 [2020-12-23 13:05:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:09,881 INFO L481 AbstractCegarLoop]: Abstraction has 2389 states and 8340 transitions. [2020-12-23 13:05:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 8340 transitions. [2020-12-23 13:05:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 13:05:09,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:09,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:09,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-23 13:05:09,885 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:09,885 INFO L82 PathProgramCache]: Analyzing trace with hash 907782437, now seen corresponding path program 1 times [2020-12-23 13:05:09,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:09,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167335045] [2020-12-23 13:05:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:10,116 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 13:05:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167335045] [2020-12-23 13:05:10,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:10,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:05:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838798395] [2020-12-23 13:05:10,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:05:10,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:10,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:05:10,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:05:10,118 INFO L87 Difference]: Start difference. First operand 2389 states and 8340 transitions. Second operand 11 states. [2020-12-23 13:05:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:10,674 INFO L93 Difference]: Finished difference Result 3007 states and 10647 transitions. [2020-12-23 13:05:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:10,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-23 13:05:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:10,682 INFO L225 Difference]: With dead ends: 3007 [2020-12-23 13:05:10,682 INFO L226 Difference]: Without dead ends: 2937 [2020-12-23 13:05:10,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:05:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-12-23 13:05:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2490. [2020-12-23 13:05:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2490 states. [2020-12-23 13:05:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 8800 transitions. [2020-12-23 13:05:10,725 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 8800 transitions. Word has length 27 [2020-12-23 13:05:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:10,726 INFO L481 AbstractCegarLoop]: Abstraction has 2490 states and 8800 transitions. [2020-12-23 13:05:10,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:05:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 8800 transitions. [2020-12-23 13:05:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 13:05:10,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:10,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:10,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-23 13:05:10,730 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:10,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2120484843, now seen corresponding path program 1 times [2020-12-23 13:05:10,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:10,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840601717] [2020-12-23 13:05:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:10,967 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 13:05:10,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840601717] [2020-12-23 13:05:10,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:10,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:05:10,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32216035] [2020-12-23 13:05:10,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:05:10,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:05:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:05:10,969 INFO L87 Difference]: Start difference. First operand 2490 states and 8800 transitions. Second operand 11 states. [2020-12-23 13:05:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:11,782 INFO L93 Difference]: Finished difference Result 3004 states and 10432 transitions. [2020-12-23 13:05:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:11,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-12-23 13:05:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:11,790 INFO L225 Difference]: With dead ends: 3004 [2020-12-23 13:05:11,790 INFO L226 Difference]: Without dead ends: 2889 [2020-12-23 13:05:11,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-12-23 13:05:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2349. [2020-12-23 13:05:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-12-23 13:05:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 8184 transitions. [2020-12-23 13:05:11,831 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 8184 transitions. Word has length 27 [2020-12-23 13:05:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:11,831 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 8184 transitions. [2020-12-23 13:05:11,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:05:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 8184 transitions. [2020-12-23 13:05:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 13:05:11,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:11,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:11,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-23 13:05:11,835 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1524893631, now seen corresponding path program 2 times [2020-12-23 13:05:11,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:11,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497739070] [2020-12-23 13:05:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:12,131 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 13:05:12,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497739070] [2020-12-23 13:05:12,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:12,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:05:12,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704357197] [2020-12-23 13:05:12,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:05:12,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:05:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:12,134 INFO L87 Difference]: Start difference. First operand 2349 states and 8184 transitions. Second operand 13 states. [2020-12-23 13:05:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:13,119 INFO L93 Difference]: Finished difference Result 3028 states and 10567 transitions. [2020-12-23 13:05:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 13:05:13,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-23 13:05:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:13,125 INFO L225 Difference]: With dead ends: 3028 [2020-12-23 13:05:13,125 INFO L226 Difference]: Without dead ends: 2886 [2020-12-23 13:05:13,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:05:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-12-23 13:05:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2087. [2020-12-23 13:05:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-12-23 13:05:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 7249 transitions. [2020-12-23 13:05:13,168 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 7249 transitions. Word has length 27 [2020-12-23 13:05:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:13,168 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 7249 transitions. [2020-12-23 13:05:13,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:05:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 7249 transitions. [2020-12-23 13:05:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 13:05:13,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:13,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-23 13:05:13,174 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:13,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1646398155, now seen corresponding path program 2 times [2020-12-23 13:05:13,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:13,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364712472] [2020-12-23 13:05:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:13,477 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 13:05:13,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364712472] [2020-12-23 13:05:13,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:13,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:05:13,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004951687] [2020-12-23 13:05:13,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:05:13,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:13,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:05:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:13,479 INFO L87 Difference]: Start difference. First operand 2087 states and 7249 transitions. Second operand 13 states. [2020-12-23 13:05:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:14,290 INFO L93 Difference]: Finished difference Result 2170 states and 7294 transitions. [2020-12-23 13:05:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:14,291 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-12-23 13:05:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:14,295 INFO L225 Difference]: With dead ends: 2170 [2020-12-23 13:05:14,295 INFO L226 Difference]: Without dead ends: 1933 [2020-12-23 13:05:14,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-12-23 13:05:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-12-23 13:05:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1392. [2020-12-23 13:05:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1392 states. [2020-12-23 13:05:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4530 transitions. [2020-12-23 13:05:14,391 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4530 transitions. Word has length 27 [2020-12-23 13:05:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:14,391 INFO L481 AbstractCegarLoop]: Abstraction has 1392 states and 4530 transitions. [2020-12-23 13:05:14,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:05:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4530 transitions. [2020-12-23 13:05:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:14,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:14,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-23 13:05:14,395 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1547272975, now seen corresponding path program 1 times [2020-12-23 13:05:14,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:14,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499944329] [2020-12-23 13:05:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:14,439 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 13:05:14,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499944329] [2020-12-23 13:05:14,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:14,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:05:14,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906120182] [2020-12-23 13:05:14,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:05:14,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:14,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:05:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:05:14,441 INFO L87 Difference]: Start difference. First operand 1392 states and 4530 transitions. Second operand 5 states. [2020-12-23 13:05:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:14,537 INFO L93 Difference]: Finished difference Result 1682 states and 5310 transitions. [2020-12-23 13:05:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:05:14,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-12-23 13:05:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:14,542 INFO L225 Difference]: With dead ends: 1682 [2020-12-23 13:05:14,542 INFO L226 Difference]: Without dead ends: 1391 [2020-12-23 13:05:14,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:05:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-23 13:05:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2020-12-23 13:05:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1391 states. [2020-12-23 13:05:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4528 transitions. [2020-12-23 13:05:14,577 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4528 transitions. Word has length 28 [2020-12-23 13:05:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:14,577 INFO L481 AbstractCegarLoop]: Abstraction has 1391 states and 4528 transitions. [2020-12-23 13:05:14,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:05:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4528 transitions. [2020-12-23 13:05:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:14,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:14,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:14,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-23 13:05:14,581 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1637295713, now seen corresponding path program 2 times [2020-12-23 13:05:14,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:14,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35705957] [2020-12-23 13:05:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:14,642 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 13:05:14,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35705957] [2020-12-23 13:05:14,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:14,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:05:14,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297362946] [2020-12-23 13:05:14,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:05:14,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:14,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:05:14,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:05:14,646 INFO L87 Difference]: Start difference. First operand 1391 states and 4528 transitions. Second operand 6 states. [2020-12-23 13:05:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:14,796 INFO L93 Difference]: Finished difference Result 1674 states and 5299 transitions. [2020-12-23 13:05:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:14,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 13:05:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:14,801 INFO L225 Difference]: With dead ends: 1674 [2020-12-23 13:05:14,801 INFO L226 Difference]: Without dead ends: 1384 [2020-12-23 13:05:14,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:05:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-12-23 13:05:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2020-12-23 13:05:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-12-23 13:05:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 4512 transitions. [2020-12-23 13:05:14,835 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 4512 transitions. Word has length 28 [2020-12-23 13:05:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:14,836 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 4512 transitions. [2020-12-23 13:05:14,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:05:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 4512 transitions. [2020-12-23 13:05:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:14,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:14,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:14,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-23 13:05:14,839 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:14,840 INFO L82 PathProgramCache]: Analyzing trace with hash 459929903, now seen corresponding path program 3 times [2020-12-23 13:05:14,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:14,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176745634] [2020-12-23 13:05:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:14,949 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 13:05:14,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176745634] [2020-12-23 13:05:14,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:14,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 13:05:14,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326189807] [2020-12-23 13:05:14,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 13:05:14,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:14,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 13:05:14,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:05:14,951 INFO L87 Difference]: Start difference. First operand 1384 states and 4512 transitions. Second operand 8 states. [2020-12-23 13:05:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:15,207 INFO L93 Difference]: Finished difference Result 1663 states and 5277 transitions. [2020-12-23 13:05:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:05:15,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-12-23 13:05:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:15,211 INFO L225 Difference]: With dead ends: 1663 [2020-12-23 13:05:15,211 INFO L226 Difference]: Without dead ends: 1380 [2020-12-23 13:05:15,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-12-23 13:05:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1380. [2020-12-23 13:05:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1380 states. [2020-12-23 13:05:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4503 transitions. [2020-12-23 13:05:15,242 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4503 transitions. Word has length 28 [2020-12-23 13:05:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:15,243 INFO L481 AbstractCegarLoop]: Abstraction has 1380 states and 4503 transitions. [2020-12-23 13:05:15,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 13:05:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4503 transitions. [2020-12-23 13:05:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:15,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:15,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:15,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-23 13:05:15,246 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1629184431, now seen corresponding path program 4 times [2020-12-23 13:05:15,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:15,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014856398] [2020-12-23 13:05:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:15,379 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 13:05:15,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014856398] [2020-12-23 13:05:15,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:15,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 13:05:15,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158832444] [2020-12-23 13:05:15,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 13:05:15,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:15,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 13:05:15,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:05:15,380 INFO L87 Difference]: Start difference. First operand 1380 states and 4503 transitions. Second operand 9 states. [2020-12-23 13:05:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:15,683 INFO L93 Difference]: Finished difference Result 1650 states and 5250 transitions. [2020-12-23 13:05:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:15,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-12-23 13:05:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:15,687 INFO L225 Difference]: With dead ends: 1650 [2020-12-23 13:05:15,687 INFO L226 Difference]: Without dead ends: 1371 [2020-12-23 13:05:15,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-12-23 13:05:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2020-12-23 13:05:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-12-23 13:05:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4479 transitions. [2020-12-23 13:05:15,711 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4479 transitions. Word has length 28 [2020-12-23 13:05:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:15,711 INFO L481 AbstractCegarLoop]: Abstraction has 1371 states and 4479 transitions. [2020-12-23 13:05:15,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 13:05:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4479 transitions. [2020-12-23 13:05:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:15,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:15,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:15,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-23 13:05:15,713 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:15,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1509106773, now seen corresponding path program 5 times [2020-12-23 13:05:15,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:15,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51746694] [2020-12-23 13:05:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:15,871 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 13:05:15,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51746694] [2020-12-23 13:05:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 13:05:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903290151] [2020-12-23 13:05:15,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 13:05:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 13:05:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:05:15,873 INFO L87 Difference]: Start difference. First operand 1371 states and 4479 transitions. Second operand 10 states. [2020-12-23 13:05:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:16,255 INFO L93 Difference]: Finished difference Result 1627 states and 5185 transitions. [2020-12-23 13:05:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:16,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-12-23 13:05:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:16,259 INFO L225 Difference]: With dead ends: 1627 [2020-12-23 13:05:16,259 INFO L226 Difference]: Without dead ends: 1357 [2020-12-23 13:05:16,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:05:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-12-23 13:05:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1357. [2020-12-23 13:05:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2020-12-23 13:05:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4426 transitions. [2020-12-23 13:05:16,291 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4426 transitions. Word has length 28 [2020-12-23 13:05:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:16,291 INFO L481 AbstractCegarLoop]: Abstraction has 1357 states and 4426 transitions. [2020-12-23 13:05:16,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 13:05:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4426 transitions. [2020-12-23 13:05:16,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:16,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:16,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:16,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-23 13:05:16,295 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:16,296 INFO L82 PathProgramCache]: Analyzing trace with hash 446339391, now seen corresponding path program 6 times [2020-12-23 13:05:16,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:16,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105802931] [2020-12-23 13:05:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:16,448 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 13:05:16,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105802931] [2020-12-23 13:05:16,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:16,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:05:16,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295454073] [2020-12-23 13:05:16,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:05:16,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:16,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:05:16,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:05:16,450 INFO L87 Difference]: Start difference. First operand 1357 states and 4426 transitions. Second operand 11 states. [2020-12-23 13:05:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:16,851 INFO L93 Difference]: Finished difference Result 1917 states and 6244 transitions. [2020-12-23 13:05:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:05:16,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-23 13:05:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:16,856 INFO L225 Difference]: With dead ends: 1917 [2020-12-23 13:05:16,856 INFO L226 Difference]: Without dead ends: 1669 [2020-12-23 13:05:16,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-23 13:05:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-12-23 13:05:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1349. [2020-12-23 13:05:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-12-23 13:05:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4390 transitions. [2020-12-23 13:05:16,880 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4390 transitions. Word has length 28 [2020-12-23 13:05:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:16,880 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 4390 transitions. [2020-12-23 13:05:16,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:05:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4390 transitions. [2020-12-23 13:05:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:16,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:16,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:16,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-23 13:05:16,883 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2112935205, now seen corresponding path program 7 times [2020-12-23 13:05:16,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:16,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167822142] [2020-12-23 13:05:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:17,043 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 13:05:17,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167822142] [2020-12-23 13:05:17,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:17,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:05:17,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731756798] [2020-12-23 13:05:17,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:05:17,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:17,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:05:17,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:05:17,046 INFO L87 Difference]: Start difference. First operand 1349 states and 4390 transitions. Second operand 11 states. [2020-12-23 13:05:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:17,334 INFO L93 Difference]: Finished difference Result 1549 states and 4908 transitions. [2020-12-23 13:05:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:05:17,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-23 13:05:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:17,338 INFO L225 Difference]: With dead ends: 1549 [2020-12-23 13:05:17,339 INFO L226 Difference]: Without dead ends: 1317 [2020-12-23 13:05:17,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-23 13:05:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-12-23 13:05:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2020-12-23 13:05:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-12-23 13:05:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 4230 transitions. [2020-12-23 13:05:17,370 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 4230 transitions. Word has length 28 [2020-12-23 13:05:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:17,370 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 4230 transitions. [2020-12-23 13:05:17,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:05:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 4230 transitions. [2020-12-23 13:05:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 13:05:17,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:17,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:17,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-12-23 13:05:17,374 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash -94355749, now seen corresponding path program 8 times [2020-12-23 13:05:17,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:17,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035269096] [2020-12-23 13:05:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:17,672 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 13:05:17,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035269096] [2020-12-23 13:05:17,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:17,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:05:17,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025208311] [2020-12-23 13:05:17,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:05:17,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:05:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:17,674 INFO L87 Difference]: Start difference. First operand 1317 states and 4230 transitions. Second operand 13 states. [2020-12-23 13:05:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:18,476 INFO L93 Difference]: Finished difference Result 1485 states and 4665 transitions. [2020-12-23 13:05:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:18,477 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-12-23 13:05:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:18,480 INFO L225 Difference]: With dead ends: 1485 [2020-12-23 13:05:18,480 INFO L226 Difference]: Without dead ends: 1053 [2020-12-23 13:05:18,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-12-23 13:05:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-12-23 13:05:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 905. [2020-12-23 13:05:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-12-23 13:05:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2760 transitions. [2020-12-23 13:05:18,503 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 2760 transitions. Word has length 28 [2020-12-23 13:05:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:18,503 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 2760 transitions. [2020-12-23 13:05:18,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:05:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 2760 transitions. [2020-12-23 13:05:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:18,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:18,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:18,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-12-23 13:05:18,506 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash -67296542, now seen corresponding path program 1 times [2020-12-23 13:05:18,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:18,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148701507] [2020-12-23 13:05:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:18,808 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 13:05:18,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148701507] [2020-12-23 13:05:18,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:18,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:05:18,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603333012] [2020-12-23 13:05:18,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:05:18,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:05:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:18,810 INFO L87 Difference]: Start difference. First operand 905 states and 2760 transitions. Second operand 13 states. [2020-12-23 13:05:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:19,559 INFO L93 Difference]: Finished difference Result 1701 states and 5319 transitions. [2020-12-23 13:05:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:05:19,559 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-23 13:05:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:19,562 INFO L225 Difference]: With dead ends: 1701 [2020-12-23 13:05:19,562 INFO L226 Difference]: Without dead ends: 1433 [2020-12-23 13:05:19,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:05:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-12-23 13:05:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 949. [2020-12-23 13:05:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-12-23 13:05:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 2878 transitions. [2020-12-23 13:05:19,578 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 2878 transitions. Word has length 30 [2020-12-23 13:05:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:19,578 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 2878 transitions. [2020-12-23 13:05:19,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:05:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 2878 transitions. [2020-12-23 13:05:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:19,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:19,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:19,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-12-23 13:05:19,580 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1668396158, now seen corresponding path program 2 times [2020-12-23 13:05:19,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:19,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626020683] [2020-12-23 13:05:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:19,857 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 13:05:19,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626020683] [2020-12-23 13:05:19,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:19,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 13:05:19,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813441907] [2020-12-23 13:05:19,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 13:05:19,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:19,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 13:05:19,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 13:05:19,858 INFO L87 Difference]: Start difference. First operand 949 states and 2878 transitions. Second operand 13 states. [2020-12-23 13:05:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:20,617 INFO L93 Difference]: Finished difference Result 1319 states and 4018 transitions. [2020-12-23 13:05:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 13:05:20,618 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-12-23 13:05:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:20,620 INFO L225 Difference]: With dead ends: 1319 [2020-12-23 13:05:20,621 INFO L226 Difference]: Without dead ends: 1059 [2020-12-23 13:05:20,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:05:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-12-23 13:05:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 933. [2020-12-23 13:05:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-12-23 13:05:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2834 transitions. [2020-12-23 13:05:20,636 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2834 transitions. Word has length 30 [2020-12-23 13:05:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:20,636 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 2834 transitions. [2020-12-23 13:05:20,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 13:05:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2834 transitions. [2020-12-23 13:05:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:20,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:20,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:20,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-23 13:05:20,638 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash -41395204, now seen corresponding path program 3 times [2020-12-23 13:05:20,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:20,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918845971] [2020-12-23 13:05:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:20,881 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 13:05:20,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918845971] [2020-12-23 13:05:20,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:20,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:20,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787083999] [2020-12-23 13:05:20,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:20,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:20,883 INFO L87 Difference]: Start difference. First operand 933 states and 2834 transitions. Second operand 12 states. [2020-12-23 13:05:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:21,251 INFO L93 Difference]: Finished difference Result 1221 states and 3704 transitions. [2020-12-23 13:05:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:05:21,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-23 13:05:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:21,254 INFO L225 Difference]: With dead ends: 1221 [2020-12-23 13:05:21,255 INFO L226 Difference]: Without dead ends: 1049 [2020-12-23 13:05:21,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-12-23 13:05:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 921. [2020-12-23 13:05:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-12-23 13:05:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2800 transitions. [2020-12-23 13:05:21,276 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2800 transitions. Word has length 30 [2020-12-23 13:05:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:21,276 INFO L481 AbstractCegarLoop]: Abstraction has 921 states and 2800 transitions. [2020-12-23 13:05:21,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2800 transitions. [2020-12-23 13:05:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:21,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:21,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:21,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-12-23 13:05:21,282 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1694297496, now seen corresponding path program 4 times [2020-12-23 13:05:21,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:21,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348870995] [2020-12-23 13:05:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:21,538 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 13:05:21,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348870995] [2020-12-23 13:05:21,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:21,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:21,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321989376] [2020-12-23 13:05:21,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:21,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:21,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:21,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:21,541 INFO L87 Difference]: Start difference. First operand 921 states and 2800 transitions. Second operand 12 states. [2020-12-23 13:05:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:21,905 INFO L93 Difference]: Finished difference Result 760 states and 2253 transitions. [2020-12-23 13:05:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:05:21,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-23 13:05:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:21,907 INFO L225 Difference]: With dead ends: 760 [2020-12-23 13:05:21,907 INFO L226 Difference]: Without dead ends: 492 [2020-12-23 13:05:21,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-12-23 13:05:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 368. [2020-12-23 13:05:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-12-23 13:05:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1047 transitions. [2020-12-23 13:05:21,914 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1047 transitions. Word has length 30 [2020-12-23 13:05:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:21,915 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 1047 transitions. [2020-12-23 13:05:21,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1047 transitions. [2020-12-23 13:05:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:21,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:21,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:21,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-12-23 13:05:21,916 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1256010255, now seen corresponding path program 1 times [2020-12-23 13:05:21,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:21,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553267504] [2020-12-23 13:05:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:22,155 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 13:05:22,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553267504] [2020-12-23 13:05:22,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:22,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:22,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143707941] [2020-12-23 13:05:22,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:22,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:22,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:22,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:22,160 INFO L87 Difference]: Start difference. First operand 368 states and 1047 transitions. Second operand 12 states. [2020-12-23 13:05:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:22,744 INFO L93 Difference]: Finished difference Result 478 states and 1317 transitions. [2020-12-23 13:05:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 13:05:22,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-23 13:05:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:22,746 INFO L225 Difference]: With dead ends: 478 [2020-12-23 13:05:22,746 INFO L226 Difference]: Without dead ends: 370 [2020-12-23 13:05:22,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-12-23 13:05:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-12-23 13:05:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2020-12-23 13:05:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-12-23 13:05:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1041 transitions. [2020-12-23 13:05:22,752 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1041 transitions. Word has length 30 [2020-12-23 13:05:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:22,752 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 1041 transitions. [2020-12-23 13:05:22,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1041 transitions. [2020-12-23 13:05:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:22,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:22,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:22,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-12-23 13:05:22,753 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -766721315, now seen corresponding path program 2 times [2020-12-23 13:05:22,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:22,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642848676] [2020-12-23 13:05:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:23,068 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 13:05:23,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642848676] [2020-12-23 13:05:23,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:23,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 13:05:23,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124030609] [2020-12-23 13:05:23,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 13:05:23,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 13:05:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-12-23 13:05:23,070 INFO L87 Difference]: Start difference. First operand 366 states and 1041 transitions. Second operand 12 states. [2020-12-23 13:05:23,602 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-23 13:05:23,731 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-12-23 13:05:23,853 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-23 13:05:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:23,953 INFO L93 Difference]: Finished difference Result 455 states and 1267 transitions. [2020-12-23 13:05:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:05:23,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-23 13:05:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:23,955 INFO L225 Difference]: With dead ends: 455 [2020-12-23 13:05:23,955 INFO L226 Difference]: Without dead ends: 312 [2020-12-23 13:05:23,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-23 13:05:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-23 13:05:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-12-23 13:05:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-23 13:05:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 866 transitions. [2020-12-23 13:05:23,961 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 866 transitions. Word has length 30 [2020-12-23 13:05:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:23,961 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 866 transitions. [2020-12-23 13:05:23,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 13:05:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 866 transitions. [2020-12-23 13:05:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 13:05:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:23,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:23,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-12-23 13:05:23,962 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thread0Err1INUSE_VIOLATION, thread0Thread1of1ForFork4Err0INUSE_VIOLATION, thread0Err6INUSE_VIOLATION, thread0Err5INUSE_VIOLATION, thread0Thread1of1ForFork4Err10INUSE_VIOLATION, thread0Thread1of1ForFork4Err3INUSE_VIOLATION, thread0Thread1of1ForFork4Err9INUSE_VIOLATION, thread0Err8INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thread0Thread1of1ForFork4Err7INUSE_VIOLATION, thread0Err2INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-12-23 13:05:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:23,962 INFO L82 PathProgramCache]: Analyzing trace with hash 660110225, now seen corresponding path program 3 times [2020-12-23 13:05:23,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:23,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812077719] [2020-12-23 13:05:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:24,132 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 13:05:24,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812077719] [2020-12-23 13:05:24,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:24,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 13:05:24,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037124241] [2020-12-23 13:05:24,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 13:05:24,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:24,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 13:05:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 13:05:24,134 INFO L87 Difference]: Start difference. First operand 312 states and 866 transitions. Second operand 11 states. [2020-12-23 13:05:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:24,469 INFO L93 Difference]: Finished difference Result 123 states and 279 transitions. [2020-12-23 13:05:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:05:24,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-12-23 13:05:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:24,470 INFO L225 Difference]: With dead ends: 123 [2020-12-23 13:05:24,470 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:05:24,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-23 13:05:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:05:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:05:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:05:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:05:24,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-23 13:05:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:24,472 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:05:24,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 13:05:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:05:24,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:05:24,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-12-23 13:05:24,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:05:24 BasicIcfg [2020-12-23 13:05:24,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:05:24,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:05:24,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:05:24,478 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:05:24,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:04:35" (3/4) ... [2020-12-23 13:05:24,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:05:24,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2020-12-23 13:05:24,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-12-23 13:05:24,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-12-23 13:05:24,493 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2020-12-23 13:05:24,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-23 13:05:24,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:05:24,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:05:24,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:05:24,535 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread/singleton_with-uninit-problems.i-witness.graphml [2020-12-23 13:05:24,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:05:24,537 INFO L168 Benchmark]: Toolchain (without parser) took 51939.88 ms. Allocated memory was 164.6 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 138.3 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 491.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,538 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 164.6 MB. Free memory was 136.9 MB in the beginning and 136.8 MB in the end (delta: 92.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:05:24,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1486.90 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 99.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.98 ms. Allocated memory is still 164.6 MB. Free memory was 99.3 MB in the beginning and 97.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,539 INFO L168 Benchmark]: Boogie Preprocessor took 71.11 ms. Allocated memory is still 164.6 MB. Free memory was 97.2 MB in the beginning and 95.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,539 INFO L168 Benchmark]: RCFGBuilder took 723.87 ms. Allocated memory is still 164.6 MB. Free memory was 95.6 MB in the beginning and 67.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,539 INFO L168 Benchmark]: TraceAbstraction took 49466.99 ms. Allocated memory was 164.6 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 66.8 MB in the beginning and 1.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 417.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,540 INFO L168 Benchmark]: Witness Printer took 58.97 ms. Allocated memory is still 2.4 GB. Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:24,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 164.6 MB. Free memory was 136.9 MB in the beginning and 136.8 MB in the end (delta: 92.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1486.90 ms. Allocated memory is still 164.6 MB. Free memory was 138.0 MB in the beginning and 99.3 MB in the end (delta: 38.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 116.98 ms. Allocated memory is still 164.6 MB. Free memory was 99.3 MB in the beginning and 97.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.11 ms. Allocated memory is still 164.6 MB. Free memory was 97.2 MB in the beginning and 95.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.87 ms. Allocated memory is still 164.6 MB. Free memory was 95.6 MB in the beginning and 67.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49466.99 ms. Allocated memory was 164.6 MB in the beginning and 2.4 GB in the end (delta: 2.3 GB). Free memory was 66.8 MB in the beginning and 1.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 417.0 MB. Max. memory is 8.0 GB. * Witness Printer took 58.97 ms. Allocated memory is still 2.4 GB. Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4085 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 1350 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.8s, 173 PlacesBefore, 95 PlacesAfterwards, 255 TransitionsBefore, 176 TransitionsAfterwards, 4982 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 87 TotalNumberOfCompositions, 55868 MoverChecksTotal - PositiveResult [Line: 1123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 48.8s, OverallIterations: 58, TraceHistogramMax: 1, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 5215 SDtfs, 9488 SDslu, 14563 SDs, 0 SdLazy, 9094 SolverSat, 1447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 697 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5288occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 58 MinimizatonAttempts, 37400 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1385 NumberOfCodeBlocks, 1385 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 479069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 58 InterpolantComputations, 58 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...