/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 22:07:27,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 22:07:27,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 22:07:27,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 22:07:27,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 22:07:27,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 22:07:27,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 22:07:27,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 22:07:27,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 22:07:27,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 22:07:27,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 22:07:27,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 22:07:27,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 22:07:27,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 22:07:27,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 22:07:27,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 22:07:27,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 22:07:27,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 22:07:27,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 22:07:27,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 22:07:27,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 22:07:27,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 22:07:27,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 22:07:27,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 22:07:27,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 22:07:27,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 22:07:27,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 22:07:27,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 22:07:27,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 22:07:27,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 22:07:27,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 22:07:27,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 22:07:27,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 22:07:27,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 22:07:27,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 22:07:27,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 22:07:27,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 22:07:27,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 22:07:27,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 22:07:27,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 22:07:27,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 22:07:27,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 22:07:27,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 22:07:27,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 22:07:27,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 22:07:27,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 22:07:27,974 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 22:07:27,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 22:07:27,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 22:07:27,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 22:07:27,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 22:07:27,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 22:07:27,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 22:07:27,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 22:07:27,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 22:07:27,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 22:07:27,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 22:07:27,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 22:07:27,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 22:07:27,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 22:07:27,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 22:07:27,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 22:07:27,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 22:07:27,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 22:07:27,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 22:07:27,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 22:07:27,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 22:07:27,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 22:07:27,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 22:07:27,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 22:07:27,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 22:07:27,980 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 22:07:27,980 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 22:07:27,980 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/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 22:07:28,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 22:07:28,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 22:07:28,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 22:07:28,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 22:07:28,411 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 22:07:28,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-20 22:07:28,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817f4e9e3/22641df15d8d490d8cd920be0e4d098a/FLAGaf12e1fb9 [2021-01-20 22:07:29,369 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 22:07:29,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2021-01-20 22:07:29,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817f4e9e3/22641df15d8d490d8cd920be0e4d098a/FLAGaf12e1fb9 [2021-01-20 22:07:29,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817f4e9e3/22641df15d8d490d8cd920be0e4d098a [2021-01-20 22:07:29,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 22:07:29,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 22:07:29,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 22:07:29,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 22:07:29,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 22:07:29,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:29" (1/1) ... [2021-01-20 22:07:29,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e48d517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:29, skipping insertion in model container [2021-01-20 22:07:29,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:29" (1/1) ... [2021-01-20 22:07:29,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 22:07:29,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 22:07:30,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 22:07:30,410 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 22:07:30,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 22:07:30,762 INFO L208 MainTranslator]: Completed translation [2021-01-20 22:07:30,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30 WrapperNode [2021-01-20 22:07:30,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 22:07:30,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 22:07:30,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 22:07:30,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 22:07:30,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 22:07:30,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 22:07:30,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 22:07:30,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 22:07:30,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... [2021-01-20 22:07:30,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 22:07:30,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 22:07:30,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 22:07:30,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 22:07:30,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 22:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 22:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 22:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 22:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 22:07:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-01-20 22:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-01-20 22:07:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-01-20 22:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 22:07:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 22:07:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 22:07:30,963 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 22:07:31,578 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 22:07:31,578 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 22:07:31,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:31 BoogieIcfgContainer [2021-01-20 22:07:31,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 22:07:31,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 22:07:31,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 22:07:31,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 22:07:31,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:07:29" (1/3) ... [2021-01-20 22:07:31,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4e245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:31, skipping insertion in model container [2021-01-20 22:07:31,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:30" (2/3) ... [2021-01-20 22:07:31,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4e245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:31, skipping insertion in model container [2021-01-20 22:07:31,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:31" (3/3) ... [2021-01-20 22:07:31,594 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-01-20 22:07:31,614 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 22:07:31,614 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 22:07:31,619 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 22:07:31,620 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 22:07:31,675 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,676 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,676 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,676 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,677 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,677 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,677 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,677 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,678 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,678 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,678 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,679 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,679 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,679 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,679 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,680 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,680 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,680 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,682 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,682 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,683 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,683 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,683 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,683 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,684 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,684 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,684 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,684 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,685 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,685 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,685 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,686 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,686 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,686 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,687 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,687 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,687 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,688 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,689 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,689 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,689 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,690 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,690 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,691 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,691 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,692 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,698 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,699 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,699 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,699 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,700 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,700 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,700 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,700 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,701 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 22:07:31,710 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-20 22:07:31,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-20 22:07:31,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 22:07:31,770 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 22:07:31,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 22:07:31,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 22:07:31,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 22:07:31,771 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 22:07:31,771 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 22:07:31,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 22:07:31,792 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 90 transitions, 188 flow [2021-01-20 22:07:31,845 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 22:07:31,879 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:31,881 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:31,881 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:31,890 INFO L82 PathProgramCache]: Analyzing trace with hash 418508673, now seen corresponding path program 1 times [2021-01-20 22:07:31,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:31,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317806977] [2021-01-20 22:07:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 22:07:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317806977] [2021-01-20 22:07:32,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 22:07:32,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 22:07:32,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218057081] [2021-01-20 22:07:32,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 22:07:32,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:32,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 22:07:32,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 22:07:32,214 INFO L87 Difference]: Start difference. First operand has 320 states, 318 states have (on average 2.0251572327044025) internal successors, (644), 319 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:32,240 INFO L93 Difference]: Finished difference Result 311 states and 581 transitions. [2021-01-20 22:07:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 22:07:32,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 22:07:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:32,245 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 22:07:32,245 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 581 transitions. Word has length 52 [2021-01-20 22:07:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:32,247 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 581 transitions. [2021-01-20 22:07:32,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 581 transitions. [2021-01-20 22:07:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 22:07:32,252 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:32,252 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:32,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 22:07:32,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:32,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1420501857, now seen corresponding path program 1 times [2021-01-20 22:07:32,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:32,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768537538] [2021-01-20 22:07:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 22:07:32,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768537538] [2021-01-20 22:07:32,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 22:07:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 22:07:32,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313143149] [2021-01-20 22:07:32,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 22:07:32,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:32,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 22:07:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 22:07:32,459 INFO L87 Difference]: Start difference. First operand 311 states and 581 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:32,519 INFO L93 Difference]: Finished difference Result 461 states and 881 transitions. [2021-01-20 22:07:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 22:07:32,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 22:07:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:32,522 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 22:07:32,522 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 881 transitions. Word has length 52 [2021-01-20 22:07:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:32,523 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 881 transitions. [2021-01-20 22:07:32,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 881 transitions. [2021-01-20 22:07:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-20 22:07:32,526 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:32,526 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:32,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 22:07:32,526 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash 255348339, now seen corresponding path program 1 times [2021-01-20 22:07:32,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:32,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338988705] [2021-01-20 22:07:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 22:07:32,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338988705] [2021-01-20 22:07:32,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 22:07:32,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 22:07:32,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341696194] [2021-01-20 22:07:32,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 22:07:32,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:32,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 22:07:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 22:07:32,622 INFO L87 Difference]: Start difference. First operand 461 states and 881 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:32,652 INFO L93 Difference]: Finished difference Result 657 states and 1273 transitions. [2021-01-20 22:07:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 22:07:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-01-20 22:07:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:32,654 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 22:07:32,654 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1273 transitions. Word has length 63 [2021-01-20 22:07:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:32,655 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 1273 transitions. [2021-01-20 22:07:32,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1273 transitions. [2021-01-20 22:07:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-20 22:07:32,658 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:32,658 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:32,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 22:07:32,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1925948387, now seen corresponding path program 1 times [2021-01-20 22:07:32,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:32,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378452822] [2021-01-20 22:07:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 22:07:32,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378452822] [2021-01-20 22:07:32,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629283756] [2021-01-20 22:07:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 22:07:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-20 22:07:33,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:33,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 22:07:33,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511193144] [2021-01-20 22:07:33,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 22:07:33,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:33,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 22:07:33,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 22:07:33,032 INFO L87 Difference]: Start difference. First operand 657 states and 1273 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:33,101 INFO L93 Difference]: Finished difference Result 899 states and 1757 transitions. [2021-01-20 22:07:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 22:07:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-20 22:07:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:33,103 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-20 22:07:33,103 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1757 transitions. Word has length 71 [2021-01-20 22:07:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:33,104 INFO L481 AbstractCegarLoop]: Abstraction has 899 states and 1757 transitions. [2021-01-20 22:07:33,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1757 transitions. [2021-01-20 22:07:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-20 22:07:33,108 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:33,108 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:33,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:33,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1527926795, now seen corresponding path program 2 times [2021-01-20 22:07:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:33,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405349950] [2021-01-20 22:07:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 22:07:33,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405349950] [2021-01-20 22:07:33,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795993340] [2021-01-20 22:07:33,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:33,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 22:07:33,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 22:07:33,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 22:07:33,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:33,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-20 22:07:33,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84873525] [2021-01-20 22:07:33,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 22:07:33,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 22:07:33,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-20 22:07:33,611 INFO L87 Difference]: Start difference. First operand 899 states and 1757 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:33,665 INFO L93 Difference]: Finished difference Result 1211 states and 2381 transitions. [2021-01-20 22:07:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 22:07:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-01-20 22:07:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:33,667 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-20 22:07:33,667 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 2381 transitions. Word has length 82 [2021-01-20 22:07:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:33,667 INFO L481 AbstractCegarLoop]: Abstraction has 1211 states and 2381 transitions. [2021-01-20 22:07:33,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 2381 transitions. [2021-01-20 22:07:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-20 22:07:33,671 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:33,672 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:33,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:33,886 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 126749173, now seen corresponding path program 3 times [2021-01-20 22:07:33,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:33,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919791207] [2021-01-20 22:07:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-20 22:07:33,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919791207] [2021-01-20 22:07:33,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767236114] [2021-01-20 22:07:33,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:34,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-20 22:07:34,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:34,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-20 22:07:34,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-20 22:07:34,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:34,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-01-20 22:07:34,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440718628] [2021-01-20 22:07:34,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-20 22:07:34,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:34,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-20 22:07:34,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-20 22:07:34,183 INFO L87 Difference]: Start difference. First operand 1211 states and 2381 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:35,443 INFO L93 Difference]: Finished difference Result 1941 states and 3841 transitions. [2021-01-20 22:07:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-20 22:07:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-01-20 22:07:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:35,449 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 22:07:35,449 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3841 transitions. Word has length 90 [2021-01-20 22:07:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:35,450 INFO L481 AbstractCegarLoop]: Abstraction has 1941 states and 3841 transitions. [2021-01-20 22:07:35,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3841 transitions. [2021-01-20 22:07:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-20 22:07:35,467 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:35,470 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:35,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:35,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1071300303, now seen corresponding path program 4 times [2021-01-20 22:07:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348787267] [2021-01-20 22:07:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 22:07:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348787267] [2021-01-20 22:07:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858417149] [2021-01-20 22:07:35,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:35,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 22:07:35,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:35,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 22:07:35,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 22:07:35,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:35,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 22:07:35,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861978220] [2021-01-20 22:07:35,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 22:07:35,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 22:07:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-20 22:07:36,001 INFO L87 Difference]: Start difference. First operand 1941 states and 3841 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:36,124 INFO L93 Difference]: Finished difference Result 2359 states and 4677 transitions. [2021-01-20 22:07:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 22:07:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-01-20 22:07:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:36,127 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-20 22:07:36,127 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 4677 transitions. Word has length 109 [2021-01-20 22:07:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:36,128 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 4677 transitions. [2021-01-20 22:07:36,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 4677 transitions. [2021-01-20 22:07:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-20 22:07:36,135 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:36,135 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:36,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:36,349 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 165335711, now seen corresponding path program 5 times [2021-01-20 22:07:36,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:36,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106517614] [2021-01-20 22:07:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-01-20 22:07:36,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106517614] [2021-01-20 22:07:36,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201864816] [2021-01-20 22:07:36,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:36,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 22:07:36,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:36,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 22:07:36,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-01-20 22:07:36,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:36,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-01-20 22:07:36,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266726614] [2021-01-20 22:07:36,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-20 22:07:36,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:36,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-20 22:07:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-01-20 22:07:36,820 INFO L87 Difference]: Start difference. First operand 2359 states and 4677 transitions. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:40,700 INFO L93 Difference]: Finished difference Result 3353 states and 6665 transitions. [2021-01-20 22:07:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-01-20 22:07:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-01-20 22:07:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:40,714 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11273 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-01-20 22:07:40,714 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 6665 transitions. Word has length 120 [2021-01-20 22:07:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:40,715 INFO L481 AbstractCegarLoop]: Abstraction has 3353 states and 6665 transitions. [2021-01-20 22:07:40,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 18 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 6665 transitions. [2021-01-20 22:07:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-20 22:07:40,724 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:40,724 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:40,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:40,938 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:40,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1067080613, now seen corresponding path program 6 times [2021-01-20 22:07:40,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:40,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027457205] [2021-01-20 22:07:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:41,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027457205] [2021-01-20 22:07:41,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558974785] [2021-01-20 22:07:41,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:41,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-20 22:07:41,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:41,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 22:07:41,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:41,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:41,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-20 22:07:41,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271845280] [2021-01-20 22:07:41,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-20 22:07:41,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-20 22:07:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-01-20 22:07:41,398 INFO L87 Difference]: Start difference. First operand 3353 states and 6665 transitions. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:41,603 INFO L93 Difference]: Finished difference Result 3859 states and 7677 transitions. [2021-01-20 22:07:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-20 22:07:41,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-01-20 22:07:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:41,605 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-01-20 22:07:41,605 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 7677 transitions. Word has length 139 [2021-01-20 22:07:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:41,605 INFO L481 AbstractCegarLoop]: Abstraction has 3859 states and 7677 transitions. [2021-01-20 22:07:41,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 7677 transitions. [2021-01-20 22:07:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-20 22:07:41,615 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:41,615 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:41,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:41,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1261600439, now seen corresponding path program 7 times [2021-01-20 22:07:41,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:41,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166152397] [2021-01-20 22:07:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:42,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166152397] [2021-01-20 22:07:42,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049388908] [2021-01-20 22:07:42,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 22:07:42,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:42,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:42,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 22:07:42,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188471551] [2021-01-20 22:07:42,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 22:07:42,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 22:07:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-20 22:07:42,274 INFO L87 Difference]: Start difference. First operand 3859 states and 7677 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:42,536 INFO L93 Difference]: Finished difference Result 4365 states and 8689 transitions. [2021-01-20 22:07:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 22:07:42,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-01-20 22:07:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:42,539 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-20 22:07:42,539 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 8689 transitions. Word has length 150 [2021-01-20 22:07:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:42,539 INFO L481 AbstractCegarLoop]: Abstraction has 4365 states and 8689 transitions. [2021-01-20 22:07:42,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 8689 transitions. [2021-01-20 22:07:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-01-20 22:07:42,550 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:42,550 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:42,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 22:07:42,764 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:42,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1689525349, now seen corresponding path program 8 times [2021-01-20 22:07:42,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:42,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713058521] [2021-01-20 22:07:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:43,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713058521] [2021-01-20 22:07:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470273087] [2021-01-20 22:07:43,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:43,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 22:07:43,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:43,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 22:07:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:43,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:43,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 22:07:43,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175439243] [2021-01-20 22:07:43,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 22:07:43,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 22:07:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-20 22:07:43,299 INFO L87 Difference]: Start difference. First operand 4365 states and 8689 transitions. Second operand has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:07:43,627 INFO L93 Difference]: Finished difference Result 4871 states and 9701 transitions. [2021-01-20 22:07:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 22:07:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-01-20 22:07:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:07:43,629 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 22:07:43,630 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 9701 transitions. Word has length 161 [2021-01-20 22:07:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:07:43,630 INFO L481 AbstractCegarLoop]: Abstraction has 4871 states and 9701 transitions. [2021-01-20 22:07:43,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 19 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:07:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 9701 transitions. [2021-01-20 22:07:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-01-20 22:07:43,643 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:07:43,643 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:07:43,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-20 22:07:43,857 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:07:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:07:43,859 INFO L82 PathProgramCache]: Analyzing trace with hash -767346167, now seen corresponding path program 9 times [2021-01-20 22:07:43,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:07:43,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212701320] [2021-01-20 22:07:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:07:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:07:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-20 22:07:44,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212701320] [2021-01-20 22:07:44,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276958321] [2021-01-20 22:07:44,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:07:44,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-20 22:07:44,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:07:44,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 22:07:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:07:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-01-20 22:07:44,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:07:44,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-01-20 22:07:44,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549405409] [2021-01-20 22:07:44,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-20 22:07:44,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:07:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-20 22:07:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-01-20 22:07:44,556 INFO L87 Difference]: Start difference. First operand 4871 states and 9701 transitions. Second operand has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:00,344 INFO L93 Difference]: Finished difference Result 6305 states and 12569 transitions. [2021-01-20 22:08:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-01-20 22:08:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-01-20 22:08:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:00,364 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67168 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-01-20 22:08:00,365 INFO L78 Accepts]: Start accepts. Automaton has 6305 states and 12569 transitions. Word has length 172 [2021-01-20 22:08:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:00,365 INFO L481 AbstractCegarLoop]: Abstraction has 6305 states and 12569 transitions. [2021-01-20 22:08:00,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 7.071428571428571) internal successors, (198), 28 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6305 states and 12569 transitions. [2021-01-20 22:08:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-01-20 22:08:00,379 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:00,379 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:00,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:00,594 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2028149957, now seen corresponding path program 10 times [2021-01-20 22:08:00,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:00,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734278935] [2021-01-20 22:08:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 22:08:00,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734278935] [2021-01-20 22:08:00,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258330300] [2021-01-20 22:08:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:01,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 22:08:01,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:08:01,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 22:08:01,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 22:08:01,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:01,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 22:08:01,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513510461] [2021-01-20 22:08:01,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 22:08:01,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:01,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 22:08:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-20 22:08:01,141 INFO L87 Difference]: Start difference. First operand 6305 states and 12569 transitions. Second operand has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:01,546 INFO L93 Difference]: Finished difference Result 6899 states and 13757 transitions. [2021-01-20 22:08:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 22:08:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-01-20 22:08:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:01,548 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 22:08:01,548 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 13757 transitions. Word has length 191 [2021-01-20 22:08:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:01,549 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 13757 transitions. [2021-01-20 22:08:01,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 7.391304347826087) internal successors, (170), 23 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 13757 transitions. [2021-01-20 22:08:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-01-20 22:08:01,563 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:01,563 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:01,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:01,778 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:01,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1796866381, now seen corresponding path program 11 times [2021-01-20 22:08:01,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:01,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852573642] [2021-01-20 22:08:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 22:08:02,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852573642] [2021-01-20 22:08:02,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776004799] [2021-01-20 22:08:02,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:02,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-20 22:08:02,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:08:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 22:08:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 22:08:02,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:02,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-20 22:08:02,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403833311] [2021-01-20 22:08:02,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 22:08:02,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 22:08:02,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-20 22:08:02,361 INFO L87 Difference]: Start difference. First operand 6899 states and 13757 transitions. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:02,907 INFO L93 Difference]: Finished difference Result 7493 states and 14945 transitions. [2021-01-20 22:08:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 22:08:02,907 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-01-20 22:08:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:02,914 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 22:08:02,914 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 14945 transitions. Word has length 202 [2021-01-20 22:08:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:02,916 INFO L481 AbstractCegarLoop]: Abstraction has 7493 states and 14945 transitions. [2021-01-20 22:08:02,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 14945 transitions. [2021-01-20 22:08:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-01-20 22:08:02,932 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:02,933 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:03,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 22:08:03,149 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1927005179, now seen corresponding path program 12 times [2021-01-20 22:08:03,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:03,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133066916] [2021-01-20 22:08:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-01-20 22:08:03,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133066916] [2021-01-20 22:08:03,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861059523] [2021-01-20 22:08:03,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:03,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-20 22:08:03,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:08:03,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 22:08:03,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-01-20 22:08:04,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:04,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2021-01-20 22:08:04,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090294050] [2021-01-20 22:08:04,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-20 22:08:04,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:04,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-20 22:08:04,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-01-20 22:08:04,056 INFO L87 Difference]: Start difference. First operand 7493 states and 14945 transitions. Second operand has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:43,870 INFO L93 Difference]: Finished difference Result 9279 states and 18517 transitions. [2021-01-20 22:08:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2021-01-20 22:08:43,870 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-01-20 22:08:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:43,905 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183115 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=68543, Invalid=305389, Unknown=0, NotChecked=0, Total=373932 [2021-01-20 22:08:43,905 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 18517 transitions. Word has length 213 [2021-01-20 22:08:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:43,906 INFO L481 AbstractCegarLoop]: Abstraction has 9279 states and 18517 transitions. [2021-01-20 22:08:43,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.638888888888889) internal successors, (239), 36 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 18517 transitions. [2021-01-20 22:08:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-01-20 22:08:43,918 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:43,919 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:44,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 22:08:44,135 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:44,136 INFO L82 PathProgramCache]: Analyzing trace with hash -364467875, now seen corresponding path program 13 times [2021-01-20 22:08:44,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:44,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142308612] [2021-01-20 22:08:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 22:08:44,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142308612] [2021-01-20 22:08:44,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298721369] [2021-01-20 22:08:44,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 22:08:44,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 738 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 22:08:44,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:44,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-20 22:08:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015804653] [2021-01-20 22:08:44,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-20 22:08:44,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-20 22:08:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-20 22:08:44,911 INFO L87 Difference]: Start difference. First operand 9279 states and 18517 transitions. Second operand has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:45,673 INFO L93 Difference]: Finished difference Result 9961 states and 19881 transitions. [2021-01-20 22:08:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 22:08:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-01-20 22:08:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:45,675 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 22:08:45,675 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 19881 transitions. Word has length 232 [2021-01-20 22:08:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:45,676 INFO L481 AbstractCegarLoop]: Abstraction has 9961 states and 19881 transitions. [2021-01-20 22:08:45,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 19881 transitions. [2021-01-20 22:08:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-01-20 22:08:45,691 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:45,692 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:45,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-20 22:08:45,906 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1941157073, now seen corresponding path program 14 times [2021-01-20 22:08:45,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:45,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255708423] [2021-01-20 22:08:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 22:08:46,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255708423] [2021-01-20 22:08:46,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405233156] [2021-01-20 22:08:46,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:46,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 22:08:46,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:08:46,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 22:08:46,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 0 proven. 871 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 22:08:46,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:46,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-20 22:08:46,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528104110] [2021-01-20 22:08:46,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-20 22:08:46,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:46,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-20 22:08:46,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 22:08:46,695 INFO L87 Difference]: Start difference. First operand 9961 states and 19881 transitions. Second operand has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:08:47,547 INFO L93 Difference]: Finished difference Result 10643 states and 21245 transitions. [2021-01-20 22:08:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 22:08:47,548 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2021-01-20 22:08:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:08:47,549 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 22:08:47,549 INFO L78 Accepts]: Start accepts. Automaton has 10643 states and 21245 transitions. Word has length 243 [2021-01-20 22:08:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:08:47,550 INFO L481 AbstractCegarLoop]: Abstraction has 10643 states and 21245 transitions. [2021-01-20 22:08:47,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.903225806451613) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:08:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10643 states and 21245 transitions. [2021-01-20 22:08:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-01-20 22:08:47,559 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:08:47,560 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:08:47,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:47,760 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:08:47,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:08:47,761 INFO L82 PathProgramCache]: Analyzing trace with hash -303975907, now seen corresponding path program 15 times [2021-01-20 22:08:47,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:08:47,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589404954] [2021-01-20 22:08:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:08:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:08:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1015 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-20 22:08:48,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589404954] [2021-01-20 22:08:48,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154603249] [2021-01-20 22:08:48,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:08:48,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-20 22:08:48,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:08:48,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 22:08:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:08:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2021-01-20 22:08:49,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:08:49,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2021-01-20 22:08:49,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120435487] [2021-01-20 22:08:49,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-20 22:08:49,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:08:49,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-20 22:08:49,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-01-20 22:08:49,290 INFO L87 Difference]: Start difference. First operand 10643 states and 21245 transitions. Second operand has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:09:05,443 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-20 22:09:35,552 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-20 22:10:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:10:36,606 INFO L93 Difference]: Finished difference Result 12781 states and 25521 transitions. [2021-01-20 22:10:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 881 states. [2021-01-20 22:10:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-01-20 22:10:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:10:36,645 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404975 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=144350, Invalid=666550, Unknown=0, NotChecked=0, Total=810900 [2021-01-20 22:10:36,645 INFO L78 Accepts]: Start accepts. Automaton has 12781 states and 25521 transitions. Word has length 254 [2021-01-20 22:10:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:10:36,646 INFO L481 AbstractCegarLoop]: Abstraction has 12781 states and 25521 transitions. [2021-01-20 22:10:36,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:10:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12781 states and 25521 transitions. [2021-01-20 22:10:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-01-20 22:10:36,657 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:10:36,657 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:10:36,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 22:10:36,858 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:10:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:10:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1831509927, now seen corresponding path program 16 times [2021-01-20 22:10:36,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:10:36,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726308428] [2021-01-20 22:10:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:10:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:10:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 22:10:37,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726308428] [2021-01-20 22:10:37,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335072616] [2021-01-20 22:10:37,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:10:38,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 22:10:38,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:10:38,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 22:10:38,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:10:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 22:10:38,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:10:38,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-20 22:10:38,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281124837] [2021-01-20 22:10:38,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-20 22:10:38,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:10:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-20 22:10:38,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 22:10:38,300 INFO L87 Difference]: Start difference. First operand 12781 states and 25521 transitions. Second operand has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:10:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:10:39,947 INFO L93 Difference]: Finished difference Result 13551 states and 27061 transitions. [2021-01-20 22:10:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 22:10:39,950 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-01-20 22:10:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:10:39,951 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 22:10:39,951 INFO L78 Accepts]: Start accepts. Automaton has 13551 states and 27061 transitions. Word has length 273 [2021-01-20 22:10:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:10:39,951 INFO L481 AbstractCegarLoop]: Abstraction has 13551 states and 27061 transitions. [2021-01-20 22:10:39,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.742857142857143) internal successors, (236), 35 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:10:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13551 states and 27061 transitions. [2021-01-20 22:10:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-01-20 22:10:39,966 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:10:39,966 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:10:40,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:10:40,182 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:10:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:10:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -237079865, now seen corresponding path program 17 times [2021-01-20 22:10:40,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:10:40,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356012332] [2021-01-20 22:10:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:10:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:10:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 1336 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-01-20 22:10:41,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356012332] [2021-01-20 22:10:41,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613275853] [2021-01-20 22:10:41,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:10:41,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-20 22:10:41,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:10:41,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 22:10:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:10:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-01-20 22:10:42,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:10:42,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2021-01-20 22:10:42,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189816010] [2021-01-20 22:10:42,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-20 22:10:42,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:10:42,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-20 22:10:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2048, Unknown=0, NotChecked=0, Total=2450 [2021-01-20 22:10:42,666 INFO L87 Difference]: Start difference. First operand 13551 states and 27061 transitions. Second operand has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:11:54,852 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-01-20 22:16:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 22:16:09,192 INFO L93 Difference]: Finished difference Result 15953 states and 31865 transitions. [2021-01-20 22:16:09,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1151 states. [2021-01-20 22:16:09,193 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-01-20 22:16:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 22:16:09,272 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 1172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695432 ImplicationChecksByTransitivity, 320.0s TimeCoverageRelationStatistics Valid=240556, Invalid=1136546, Unknown=0, NotChecked=0, Total=1377102 [2021-01-20 22:16:09,273 INFO L78 Accepts]: Start accepts. Automaton has 15953 states and 31865 transitions. Word has length 284 [2021-01-20 22:16:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 22:16:09,273 INFO L481 AbstractCegarLoop]: Abstraction has 15953 states and 31865 transitions. [2021-01-20 22:16:09,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.2) internal successors, (310), 50 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 22:16:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15953 states and 31865 transitions. [2021-01-20 22:16:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-01-20 22:16:09,293 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 22:16:09,293 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 22:16:09,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:16:09,507 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 22:16:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 22:16:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1102218365, now seen corresponding path program 18 times [2021-01-20 22:16:09,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 22:16:09,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497980009] [2021-01-20 22:16:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 22:16:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 22:16:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-01-20 22:16:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497980009] [2021-01-20 22:16:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998699612] [2021-01-20 22:16:12,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 22:16:12,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-20 22:16:12,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 22:16:12,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 22:16:12,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 22:16:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2021-01-20 22:16:14,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 22:16:14,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2021-01-20 22:16:14,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031794466] [2021-01-20 22:16:14,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-20 22:16:14,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 22:16:14,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-20 22:16:14,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 22:16:14,705 INFO L87 Difference]: Start difference. First operand 15953 states and 31865 transitions. Second operand has 54 states, 54 states have (on average 6.092592592592593) internal successors, (329), 54 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-01-20 22:21:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 937 states. [2021-01-20 22:21:06,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-20 22:21:06,284 WARN L546 AbstractCegarLoop]: Verification canceled [2021-01-20 22:21:06,290 WARN L250 ceAbstractionStarter]: Timeout [2021-01-20 22:21:06,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 10:21:06 BasicIcfg [2021-01-20 22:21:06,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 22:21:06,293 INFO L168 Benchmark]: Toolchain (without parser) took 816754.03 ms. Allocated memory was 302.0 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 276.4 MB in the beginning and 1.2 GB in the end (delta: -920.2 MB). Peak memory consumption was 900.5 MB. Max. memory is 16.0 GB. [2021-01-20 22:21:06,293 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 22:21:06,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1223.89 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 229.3 MB in the end (delta: 46.8 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.0 GB. [2021-01-20 22:21:06,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.10 ms. Allocated memory is still 302.0 MB. Free memory was 229.3 MB in the beginning and 226.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 22:21:06,295 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 302.0 MB. Free memory was 226.1 MB in the beginning and 225.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 22:21:06,295 INFO L168 Benchmark]: RCFGBuilder took 708.42 ms. Allocated memory is still 302.0 MB. Free memory was 225.1 MB in the beginning and 198.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-01-20 22:21:06,296 INFO L168 Benchmark]: TraceAbstraction took 814705.88 ms. Allocated memory was 302.0 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 198.9 MB in the beginning and 1.2 GB in the end (delta: -997.7 MB). Peak memory consumption was 823.9 MB. Max. memory is 16.0 GB. [2021-01-20 22:21:06,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1223.89 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 229.3 MB in the end (delta: 46.8 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 74.10 ms. Allocated memory is still 302.0 MB. Free memory was 229.3 MB in the beginning and 226.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 302.0 MB. Free memory was 226.1 MB in the beginning and 225.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 708.42 ms. Allocated memory is still 302.0 MB. Free memory was 225.1 MB in the beginning and 198.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 814705.88 ms. Allocated memory was 302.0 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 198.9 MB in the beginning and 1.2 GB in the end (delta: -997.7 MB). Peak memory consumption was 823.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (15953states) and FLOYD_HOARE automaton (currently 937 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 965 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 814.5s, OverallIterations: 21, TraceHistogramMax: 17, AutomataDifference: 791.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2202 SDtfs, 71174 SDslu, 29641 SDs, 0 SdLazy, 4727 SolverSat, 5999 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8408 GetRequests, 3798 SyntacticMatches, 0 SemanticMatches, 4609 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820721 ImplicationChecksByTransitivity, 773.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15953occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 6745 NumberOfCodeBlocks, 6591 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 6706 ConstructedInterpolants, 0 QuantifiedInterpolants, 3059940 SizeOfPredicates, 252 NumberOfNonLiveVariables, 6699 ConjunctsInSsa, 270 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 7175/21263 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 could not prove your program: Timeout Completed graceful shutdown