/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.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 15:28:52,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 15:28:52,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 15:28:52,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 15:28:52,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 15:28:52,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 15:28:52,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 15:28:52,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 15:28:52,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 15:28:52,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 15:28:52,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 15:28:52,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 15:28:52,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 15:28:52,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 15:28:52,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 15:28:52,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 15:28:52,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 15:28:52,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 15:28:52,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 15:28:52,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 15:28:52,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 15:28:52,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 15:28:52,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 15:28:52,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 15:28:52,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 15:28:52,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 15:28:52,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 15:28:52,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 15:28:52,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 15:28:52,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 15:28:52,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 15:28:52,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 15:28:52,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 15:28:52,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 15:28:52,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 15:28:52,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 15:28:52,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 15:28:52,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 15:28:52,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 15:28:52,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 15:28:52,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 15:28:52,933 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.epf [2021-01-20 15:28:52,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 15:28:52,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 15:28:52,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 15:28:52,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 15:28:52,990 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 15:28:52,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 15:28:52,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 15:28:52,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 15:28:52,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 15:28:52,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 15:28:52,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 15:28:52,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 15:28:52,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 15:28:52,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 15:28:52,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 15:28:52,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 15:28:52,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 15:28:52,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 15:28:52,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 15:28:52,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 15:28:52,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 15:28:52,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 15:28:52,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 15:28:52,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 15:28:52,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 15:28:52,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 15:28:52,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 15:28:52,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 15:28:52,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 15:28:52,997 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 15:28:52,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 15:28:53,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 15:28:53,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 15:28:53,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 15:28:53,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 15:28:53,452 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 15:28:53,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-01-20 15:28:53,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6241e/7b0e36748595464db436e3b6158a60b9/FLAGa38c7a470 [2021-01-20 15:28:54,325 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 15:28:54,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-01-20 15:28:54,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6241e/7b0e36748595464db436e3b6158a60b9/FLAGa38c7a470 [2021-01-20 15:28:54,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa6241e/7b0e36748595464db436e3b6158a60b9 [2021-01-20 15:28:54,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 15:28:54,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 15:28:54,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 15:28:54,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 15:28:54,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 15:28:54,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 03:28:54" (1/1) ... [2021-01-20 15:28:54,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e888fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:54, skipping insertion in model container [2021-01-20 15:28:54,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 03:28:54" (1/1) ... [2021-01-20 15:28:54,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 15:28:54,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 15:28:55,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 15:28:55,316 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 15:28:55,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 15:28:55,736 INFO L208 MainTranslator]: Completed translation [2021-01-20 15:28:55,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55 WrapperNode [2021-01-20 15:28:55,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 15:28:55,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 15:28:55,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 15:28:55,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 15:28:55,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 15:28:55,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 15:28:55,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 15:28:55,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 15:28:55,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (1/1) ... [2021-01-20 15:28:55,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 15:28:55,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 15:28:55,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 15:28:55,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 15:28:55,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (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 15:28:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 15:28:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 15:28:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 15:28:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-01-20 15:28:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-01-20 15:28:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 15:28:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 15:28:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 15:28:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 15:28:56,023 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 15:28:56,628 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 15:28:56,628 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 15:28:56,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 03:28:56 BoogieIcfgContainer [2021-01-20 15:28:56,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 15:28:56,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 15:28:56,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 15:28:56,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 15:28:56,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 03:28:54" (1/3) ... [2021-01-20 15:28:56,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7b88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 03:28:56, skipping insertion in model container [2021-01-20 15:28:56,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 03:28:55" (2/3) ... [2021-01-20 15:28:56,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7b88d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 03:28:56, skipping insertion in model container [2021-01-20 15:28:56,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 03:28:56" (3/3) ... [2021-01-20 15:28:56,640 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-01-20 15:28:56,656 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 15:28:56,657 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 15:28:56,661 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 15:28:56,662 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 15:28:56,710 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,710 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,711 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,711 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,711 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,711 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,712 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,712 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,712 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,713 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,713 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,713 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,713 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,713 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,714 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,714 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,714 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,714 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,715 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,715 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,715 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,716 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,717 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,717 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,717 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,717 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,718 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,718 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,718 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,718 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,719 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,720 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,720 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,720 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,720 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,720 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,721 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,721 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,721 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,722 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,723 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,723 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,725 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,727 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,727 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,728 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,728 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,728 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,729 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,729 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 15:28:56,746 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-01-20 15:28:56,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-20 15:28:56,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 15:28:56,782 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 15:28:56,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 15:28:56,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 15:28:56,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 15:28:56,783 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 15:28:56,783 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 15:28:56,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 15:28:56,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 94 transitions, 196 flow [2021-01-20 15:28:56,831 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 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 15:28:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 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 15:28:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-20 15:28:56,853 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:56,854 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] [2021-01-20 15:28:56,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash 771022703, now seen corresponding path program 1 times [2021-01-20 15:28:56,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:56,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264307399] [2021-01-20 15:28:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:57,207 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 15:28:57,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264307399] [2021-01-20 15:28:57,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:57,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 15:28:57,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258923024] [2021-01-20 15:28:57,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 15:28:57,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 15:28:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 15:28:57,250 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 15:28:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:57,297 INFO L93 Difference]: Finished difference Result 315 states and 585 transitions. [2021-01-20 15:28:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 15:28:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2021-01-20 15:28:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:57,328 INFO L225 Difference]: With dead ends: 315 [2021-01-20 15:28:57,328 INFO L226 Difference]: Without dead ends: 282 [2021-01-20 15:28:57,330 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 15:28:57,330 INFO L78 Accepts]: Start accepts. Automaton has 282 states. Word has length 60 [2021-01-20 15:28:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:57,332 INFO L481 AbstractCegarLoop]: Abstraction has 282 states. [2021-01-20 15:28:57,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 15:28:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2021-01-20 15:28:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-20 15:28:57,348 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:57,348 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] [2021-01-20 15:28:57,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 15:28:57,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash 704015950, now seen corresponding path program 1 times [2021-01-20 15:28:57,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:57,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698496760] [2021-01-20 15:28:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:57,559 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 15:28:57,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698496760] [2021-01-20 15:28:57,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:57,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 15:28:57,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33502197] [2021-01-20 15:28:57,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 15:28:57,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 15:28:57,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:57,564 INFO L87 Difference]: Start difference. First operand 282 states. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 15:28:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:57,604 INFO L93 Difference]: Finished difference Result 394 states and 746 transitions. [2021-01-20 15:28:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 15:28:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-01-20 15:28:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:57,609 INFO L225 Difference]: With dead ends: 394 [2021-01-20 15:28:57,609 INFO L226 Difference]: Without dead ends: 394 [2021-01-20 15:28:57,610 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 15:28:57,610 INFO L78 Accepts]: Start accepts. Automaton has 394 states. Word has length 60 [2021-01-20 15:28:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:57,611 INFO L481 AbstractCegarLoop]: Abstraction has 394 states. [2021-01-20 15:28:57,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 15:28:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states. [2021-01-20 15:28:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-20 15:28:57,613 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:57,614 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] [2021-01-20 15:28:57,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 15:28:57,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash -727102181, now seen corresponding path program 1 times [2021-01-20 15:28:57,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:57,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989823067] [2021-01-20 15:28:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 15:28:57,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989823067] [2021-01-20 15:28:57,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 15:28:57,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 15:28:57,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341476880] [2021-01-20 15:28:57,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 15:28:57,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:57,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 15:28:57,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 15:28:57,704 INFO L87 Difference]: Start difference. First operand 394 states. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:28:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:57,738 INFO L93 Difference]: Finished difference Result 482 states and 922 transitions. [2021-01-20 15:28:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 15:28:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-01-20 15:28:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:57,743 INFO L225 Difference]: With dead ends: 482 [2021-01-20 15:28:57,744 INFO L226 Difference]: Without dead ends: 482 [2021-01-20 15:28:57,744 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 15:28:57,744 INFO L78 Accepts]: Start accepts. Automaton has 482 states. Word has length 68 [2021-01-20 15:28:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:57,745 INFO L481 AbstractCegarLoop]: Abstraction has 482 states. [2021-01-20 15:28:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 15:28:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states. [2021-01-20 15:28:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-20 15:28:57,748 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:57,748 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, 1, 1] [2021-01-20 15:28:57,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 15:28:57,749 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:57,750 INFO L82 PathProgramCache]: Analyzing trace with hash -713068941, now seen corresponding path program 1 times [2021-01-20 15:28:57,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:57,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693141162] [2021-01-20 15:28:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 15:28:57,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693141162] [2021-01-20 15:28:57,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114483953] [2021-01-20 15:28:57,925 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 15:28:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-20 15:28:58,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:58,295 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 15:28:58,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:58,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-01-20 15:28:58,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974038684] [2021-01-20 15:28:58,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 15:28:58,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 15:28:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-20 15:28:58,299 INFO L87 Difference]: Start difference. First operand 482 states. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 15:28:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:28:59,223 INFO L93 Difference]: Finished difference Result 792 states and 1542 transitions. [2021-01-20 15:28:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-20 15:28:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 73 [2021-01-20 15:28:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:28:59,232 INFO L225 Difference]: With dead ends: 792 [2021-01-20 15:28:59,233 INFO L226 Difference]: Without dead ends: 792 [2021-01-20 15:28:59,234 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-01-20 15:28:59,234 INFO L78 Accepts]: Start accepts. Automaton has 792 states. Word has length 73 [2021-01-20 15:28:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:28:59,234 INFO L481 AbstractCegarLoop]: Abstraction has 792 states. [2021-01-20 15:28:59,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 15:28:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states. [2021-01-20 15:28:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-20 15:28:59,237 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:28:59,238 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:28:59,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:28:59,452 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:28:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:28:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash -83997130, now seen corresponding path program 2 times [2021-01-20 15:28:59,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:28:59,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276416515] [2021-01-20 15:28:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:28:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:28:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-20 15:28:59,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276416515] [2021-01-20 15:28:59,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612267098] [2021-01-20 15:28:59,677 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 15:28:59,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:28:59,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:28:59,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-20 15:28:59,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:28:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-20 15:28:59,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:28:59,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-01-20 15:28:59,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359575202] [2021-01-20 15:28:59,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 15:28:59,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:28:59,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 15:28:59,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-20 15:28:59,956 INFO L87 Difference]: Start difference. First operand 792 states. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 15:29:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:00,089 INFO L93 Difference]: Finished difference Result 992 states and 1942 transitions. [2021-01-20 15:29:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 15:29:00,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 86 [2021-01-20 15:29:00,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:00,097 INFO L225 Difference]: With dead ends: 992 [2021-01-20 15:29:00,097 INFO L226 Difference]: Without dead ends: 992 [2021-01-20 15:29:00,097 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-20 15:29:00,098 INFO L78 Accepts]: Start accepts. Automaton has 992 states. Word has length 86 [2021-01-20 15:29:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:00,098 INFO L481 AbstractCegarLoop]: Abstraction has 992 states. [2021-01-20 15:29:00,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 15:29:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states. [2021-01-20 15:29:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-20 15:29:00,102 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:00,102 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 15:29:00,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:00,317 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1993740975, now seen corresponding path program 3 times [2021-01-20 15:29:00,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:00,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802230064] [2021-01-20 15:29:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-20 15:29:00,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802230064] [2021-01-20 15:29:00,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936066029] [2021-01-20 15:29:00,503 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 15:29:00,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-20 15:29:00,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:00,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 15:29:00,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-20 15:29:00,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:00,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-01-20 15:29:00,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255529344] [2021-01-20 15:29:00,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-20 15:29:00,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:00,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-20 15:29:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-01-20 15:29:00,974 INFO L87 Difference]: Start difference. First operand 992 states. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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 15:29:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:04,198 INFO L93 Difference]: Finished difference Result 1422 states and 2802 transitions. [2021-01-20 15:29:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-01-20 15:29:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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 94 [2021-01-20 15:29:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:04,207 INFO L225 Difference]: With dead ends: 1422 [2021-01-20 15:29:04,207 INFO L226 Difference]: Without dead ends: 1422 [2021-01-20 15:29:04,213 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2000, Invalid=6742, Unknown=0, NotChecked=0, Total=8742 [2021-01-20 15:29:04,214 INFO L78 Accepts]: Start accepts. Automaton has 1422 states. Word has length 94 [2021-01-20 15:29:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:04,214 INFO L481 AbstractCegarLoop]: Abstraction has 1422 states. [2021-01-20 15:29:04,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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 15:29:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states. [2021-01-20 15:29:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-20 15:29:04,219 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:04,219 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:29:04,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:04,433 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1997409476, now seen corresponding path program 4 times [2021-01-20 15:29:04,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:04,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374859382] [2021-01-20 15:29:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-20 15:29:04,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374859382] [2021-01-20 15:29:04,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941438300] [2021-01-20 15:29:04,578 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 15:29:04,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:29:04,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:04,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-20 15:29:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-20 15:29:04,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:04,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-20 15:29:04,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218294300] [2021-01-20 15:29:04,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-20 15:29:04,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-20 15:29:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-20 15:29:04,914 INFO L87 Difference]: Start difference. First operand 1422 states. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 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 15:29:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:05,109 INFO L93 Difference]: Finished difference Result 1652 states and 3262 transitions. [2021-01-20 15:29:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 15:29:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 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 107 [2021-01-20 15:29:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:05,120 INFO L225 Difference]: With dead ends: 1652 [2021-01-20 15:29:05,121 INFO L226 Difference]: Without dead ends: 1652 [2021-01-20 15:29:05,126 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 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 15:29:05,127 INFO L78 Accepts]: Start accepts. Automaton has 1652 states. Word has length 107 [2021-01-20 15:29:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:05,128 INFO L481 AbstractCegarLoop]: Abstraction has 1652 states. [2021-01-20 15:29:05,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 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 15:29:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states. [2021-01-20 15:29:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-20 15:29:05,133 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:05,134 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:05,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:05,349 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1613784980, now seen corresponding path program 5 times [2021-01-20 15:29:05,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:05,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078732315] [2021-01-20 15:29:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-20 15:29:05,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078732315] [2021-01-20 15:29:05,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511880554] [2021-01-20 15:29:05,562 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 15:29:05,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-20 15:29:05,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:05,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 15:29:05,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-20 15:29:05,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:05,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-20 15:29:05,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888849425] [2021-01-20 15:29:05,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-20 15:29:05,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-20 15:29:05,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-01-20 15:29:05,889 INFO L87 Difference]: Start difference. First operand 1652 states. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 15:29:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:06,141 INFO L93 Difference]: Finished difference Result 1882 states and 3722 transitions. [2021-01-20 15:29:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-20 15:29:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 112 [2021-01-20 15:29:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:06,154 INFO L225 Difference]: With dead ends: 1882 [2021-01-20 15:29:06,154 INFO L226 Difference]: Without dead ends: 1882 [2021-01-20 15:29:06,155 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-01-20 15:29:06,155 INFO L78 Accepts]: Start accepts. Automaton has 1882 states. Word has length 112 [2021-01-20 15:29:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:06,158 INFO L481 AbstractCegarLoop]: Abstraction has 1882 states. [2021-01-20 15:29:06,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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 15:29:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states. [2021-01-20 15:29:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-20 15:29:06,169 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:06,169 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:29:06,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:06,383 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:06,384 INFO L82 PathProgramCache]: Analyzing trace with hash 402331076, now seen corresponding path program 6 times [2021-01-20 15:29:06,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:06,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879951524] [2021-01-20 15:29:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-20 15:29:06,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879951524] [2021-01-20 15:29:06,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312546291] [2021-01-20 15:29:06,647 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 15:29:06,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-20 15:29:06,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:06,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-20 15:29:06,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-01-20 15:29:07,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:07,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2021-01-20 15:29:07,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554757032] [2021-01-20 15:29:07,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-20 15:29:07,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:07,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-20 15:29:07,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-01-20 15:29:07,255 INFO L87 Difference]: Start difference. First operand 1882 states. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 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 15:29:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:21,560 INFO L93 Difference]: Finished difference Result 2472 states and 4902 transitions. [2021-01-20 15:29:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2021-01-20 15:29:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 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 117 [2021-01-20 15:29:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:21,574 INFO L225 Difference]: With dead ends: 2472 [2021-01-20 15:29:21,574 INFO L226 Difference]: Without dead ends: 2472 [2021-01-20 15:29:21,591 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27719 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=12186, Invalid=49070, Unknown=0, NotChecked=0, Total=61256 [2021-01-20 15:29:21,591 INFO L78 Accepts]: Start accepts. Automaton has 2472 states. Word has length 117 [2021-01-20 15:29:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:21,592 INFO L481 AbstractCegarLoop]: Abstraction has 2472 states. [2021-01-20 15:29:21,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 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 15:29:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states. [2021-01-20 15:29:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-01-20 15:29:21,599 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:21,599 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:29:21,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:29:21,814 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:21,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1345701753, now seen corresponding path program 7 times [2021-01-20 15:29:21,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:21,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503373787] [2021-01-20 15:29:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 29 proven. 81 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-01-20 15:29:22,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503373787] [2021-01-20 15:29:22,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381567357] [2021-01-20 15:29:22,103 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 15:29:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 15:29:22,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 29 proven. 81 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-01-20 15:29:22,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:22,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-01-20 15:29:22,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377820669] [2021-01-20 15:29:22,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-20 15:29:22,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-20 15:29:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-01-20 15:29:22,380 INFO L87 Difference]: Start difference. First operand 2472 states. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 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 15:29:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:22,820 INFO L93 Difference]: Finished difference Result 2742 states and 5442 transitions. [2021-01-20 15:29:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-20 15:29:22,821 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 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 130 [2021-01-20 15:29:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:22,836 INFO L225 Difference]: With dead ends: 2742 [2021-01-20 15:29:22,836 INFO L226 Difference]: Without dead ends: 2742 [2021-01-20 15:29:22,836 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-01-20 15:29:22,836 INFO L78 Accepts]: Start accepts. Automaton has 2742 states. Word has length 130 [2021-01-20 15:29:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:22,837 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states. [2021-01-20 15:29:22,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 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 15:29:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states. [2021-01-20 15:29:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-01-20 15:29:22,844 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:22,845 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:29:23,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-20 15:29:23,058 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2005012447, now seen corresponding path program 8 times [2021-01-20 15:29:23,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:23,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861368635] [2021-01-20 15:29:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-01-20 15:29:23,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861368635] [2021-01-20 15:29:23,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10563948] [2021-01-20 15:29:23,365 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 15:29:23,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:29:23,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 15:29:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-01-20 15:29:23,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:23,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-01-20 15:29:23,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254043555] [2021-01-20 15:29:23,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-20 15:29:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-20 15:29:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-20 15:29:23,642 INFO L87 Difference]: Start difference. First operand 2742 states. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 15:29:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:29:24,157 INFO L93 Difference]: Finished difference Result 3012 states and 5982 transitions. [2021-01-20 15:29:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-20 15:29:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 135 [2021-01-20 15:29:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:29:24,170 INFO L225 Difference]: With dead ends: 3012 [2021-01-20 15:29:24,170 INFO L226 Difference]: Without dead ends: 3012 [2021-01-20 15:29:24,171 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-01-20 15:29:24,171 INFO L78 Accepts]: Start accepts. Automaton has 3012 states. Word has length 135 [2021-01-20 15:29:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:29:24,171 INFO L481 AbstractCegarLoop]: Abstraction has 3012 states. [2021-01-20 15:29:24,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 15:29:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states. [2021-01-20 15:29:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-01-20 15:29:24,179 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:29:24,179 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:29:24,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-20 15:29:24,394 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:29:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:29:24,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1648562055, now seen corresponding path program 9 times [2021-01-20 15:29:24,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:29:24,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625718852] [2021-01-20 15:29:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:29:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:29:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 29 proven. 148 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-01-20 15:29:24,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625718852] [2021-01-20 15:29:24,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421299728] [2021-01-20 15:29:24,761 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 15:29:24,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-20 15:29:24,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:29:24,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-20 15:29:24,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:29:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-01-20 15:29:25,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:29:25,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 30 [2021-01-20 15:29:25,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152784332] [2021-01-20 15:29:25,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-20 15:29:25,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:29:25,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-20 15:29:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-01-20 15:29:25,421 INFO L87 Difference]: Start difference. First operand 3012 states. Second operand has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 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 15:30:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:06,713 INFO L93 Difference]: Finished difference Result 3762 states and 7482 transitions. [2021-01-20 15:30:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 443 states. [2021-01-20 15:30:06,714 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 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 140 [2021-01-20 15:30:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:06,730 INFO L225 Difference]: With dead ends: 3762 [2021-01-20 15:30:06,730 INFO L226 Difference]: Without dead ends: 3762 [2021-01-20 15:30:06,747 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99125 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=38804, Invalid=168676, Unknown=0, NotChecked=0, Total=207480 [2021-01-20 15:30:06,747 INFO L78 Accepts]: Start accepts. Automaton has 3762 states. Word has length 140 [2021-01-20 15:30:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:06,748 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states. [2021-01-20 15:30:06,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 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 15:30:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states. [2021-01-20 15:30:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-01-20 15:30:06,756 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:06,756 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:30:06,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:30:06,973 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:06,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1603895558, now seen corresponding path program 10 times [2021-01-20 15:30:06,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:06,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770341027] [2021-01-20 15:30:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-01-20 15:30:07,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770341027] [2021-01-20 15:30:07,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309209349] [2021-01-20 15:30:07,440 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 15:30:07,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:30:07,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:30:07,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-20 15:30:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-01-20 15:30:07,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:07,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-01-20 15:30:07,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620146147] [2021-01-20 15:30:07,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-20 15:30:07,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:07,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-20 15:30:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-01-20 15:30:07,752 INFO L87 Difference]: Start difference. First operand 3762 states. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 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 15:30:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:08,526 INFO L93 Difference]: Finished difference Result 4072 states and 8102 transitions. [2021-01-20 15:30:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-20 15:30:08,527 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 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 153 [2021-01-20 15:30:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:08,545 INFO L225 Difference]: With dead ends: 4072 [2021-01-20 15:30:08,545 INFO L226 Difference]: Without dead ends: 4072 [2021-01-20 15:30:08,546 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-01-20 15:30:08,546 INFO L78 Accepts]: Start accepts. Automaton has 4072 states. Word has length 153 [2021-01-20 15:30:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:08,546 INFO L481 AbstractCegarLoop]: Abstraction has 4072 states. [2021-01-20 15:30:08,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 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 15:30:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states. [2021-01-20 15:30:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-01-20 15:30:08,553 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:08,554 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:30:08,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:30:08,767 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:08,768 INFO L82 PathProgramCache]: Analyzing trace with hash 173401250, now seen corresponding path program 11 times [2021-01-20 15:30:08,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:08,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614999140] [2021-01-20 15:30:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 36 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-01-20 15:30:09,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614999140] [2021-01-20 15:30:09,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107231757] [2021-01-20 15:30:09,361 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 15:30:09,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-20 15:30:09,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:30:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-20 15:30:09,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 36 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-01-20 15:30:09,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:09,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-01-20 15:30:09,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423827359] [2021-01-20 15:30:09,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-20 15:30:09,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-20 15:30:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-01-20 15:30:09,627 INFO L87 Difference]: Start difference. First operand 4072 states. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 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 15:30:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:30:10,537 INFO L93 Difference]: Finished difference Result 4382 states and 8722 transitions. [2021-01-20 15:30:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-20 15:30:10,538 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 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 158 [2021-01-20 15:30:10,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:30:10,546 INFO L225 Difference]: With dead ends: 4382 [2021-01-20 15:30:10,546 INFO L226 Difference]: Without dead ends: 4382 [2021-01-20 15:30:10,546 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-01-20 15:30:10,547 INFO L78 Accepts]: Start accepts. Automaton has 4382 states. Word has length 158 [2021-01-20 15:30:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:30:10,547 INFO L481 AbstractCegarLoop]: Abstraction has 4382 states. [2021-01-20 15:30:10,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 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 15:30:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states. [2021-01-20 15:30:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-01-20 15:30:10,556 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:30:10,556 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:30:10,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-20 15:30:10,772 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:30:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:30:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -169097222, now seen corresponding path program 12 times [2021-01-20 15:30:10,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:30:10,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175500274] [2021-01-20 15:30:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:30:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:30:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 36 proven. 286 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-01-20 15:30:11,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175500274] [2021-01-20 15:30:11,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609266498] [2021-01-20 15:30:11,397 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 15:30:11,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-20 15:30:11,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:30:11,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-20 15:30:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:30:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-01-20 15:30:12,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:30:12,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2021-01-20 15:30:12,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134834348] [2021-01-20 15:30:12,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-20 15:30:12,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:30:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-20 15:30:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-01-20 15:30:12,299 INFO L87 Difference]: Start difference. First operand 4382 states. Second operand has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 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 15:31:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:31:56,806 INFO L93 Difference]: Finished difference Result 5292 states and 10542 transitions. [2021-01-20 15:31:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2021-01-20 15:31:56,807 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 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 163 [2021-01-20 15:31:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:31:56,816 INFO L225 Difference]: With dead ends: 5292 [2021-01-20 15:31:56,816 INFO L226 Difference]: Without dead ends: 5292 [2021-01-20 15:31:56,851 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 1547 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253049 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=92780, Invalid=422026, Unknown=0, NotChecked=0, Total=514806 [2021-01-20 15:31:56,851 INFO L78 Accepts]: Start accepts. Automaton has 5292 states. Word has length 163 [2021-01-20 15:31:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:31:56,851 INFO L481 AbstractCegarLoop]: Abstraction has 5292 states. [2021-01-20 15:31:56,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 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 15:31:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states. [2021-01-20 15:31:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-01-20 15:31:56,861 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:31:56,861 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:31:57,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-20 15:31:57,076 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:31:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:31:57,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1065111875, now seen corresponding path program 13 times [2021-01-20 15:31:57,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:31:57,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537348205] [2021-01-20 15:31:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:31:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:31:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 43 proven. 342 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-01-20 15:31:57,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537348205] [2021-01-20 15:31:57,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505036106] [2021-01-20 15:31:57,985 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 15:31:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:31:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-20 15:31:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:31:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 43 proven. 342 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-01-20 15:31:58,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:31:58,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-01-20 15:31:58,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457830529] [2021-01-20 15:31:58,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-20 15:31:58,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:31:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-20 15:31:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-01-20 15:31:58,321 INFO L87 Difference]: Start difference. First operand 5292 states. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 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 15:31:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:31:59,811 INFO L93 Difference]: Finished difference Result 5642 states and 11242 transitions. [2021-01-20 15:31:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-20 15:31:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 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 176 [2021-01-20 15:31:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:31:59,825 INFO L225 Difference]: With dead ends: 5642 [2021-01-20 15:31:59,826 INFO L226 Difference]: Without dead ends: 5642 [2021-01-20 15:31:59,827 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-01-20 15:31:59,827 INFO L78 Accepts]: Start accepts. Automaton has 5642 states. Word has length 176 [2021-01-20 15:31:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:31:59,828 INFO L481 AbstractCegarLoop]: Abstraction has 5642 states. [2021-01-20 15:31:59,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 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 15:31:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states. [2021-01-20 15:31:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-01-20 15:31:59,838 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:31:59,839 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:32:00,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-20 15:32:00,053 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:32:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:32:00,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1743229931, now seen corresponding path program 14 times [2021-01-20 15:32:00,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:32:00,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489226913] [2021-01-20 15:32:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:32:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:32:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 43 proven. 403 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-01-20 15:32:01,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489226913] [2021-01-20 15:32:01,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860220972] [2021-01-20 15:32:01,182 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 15:32:01,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-20 15:32:01,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:32:01,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-20 15:32:01,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:32:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 43 proven. 403 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-01-20 15:32:01,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:32:01,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-01-20 15:32:01,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689069604] [2021-01-20 15:32:01,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-20 15:32:01,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:32:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-20 15:32:01,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-01-20 15:32:01,575 INFO L87 Difference]: Start difference. First operand 5642 states. Second operand has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 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 15:32:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:32:03,271 INFO L93 Difference]: Finished difference Result 5992 states and 11942 transitions. [2021-01-20 15:32:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-20 15:32:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 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 181 [2021-01-20 15:32:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:32:03,285 INFO L225 Difference]: With dead ends: 5992 [2021-01-20 15:32:03,285 INFO L226 Difference]: Without dead ends: 5992 [2021-01-20 15:32:03,286 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-01-20 15:32:03,286 INFO L78 Accepts]: Start accepts. Automaton has 5992 states. Word has length 181 [2021-01-20 15:32:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:32:03,287 INFO L481 AbstractCegarLoop]: Abstraction has 5992 states. [2021-01-20 15:32:03,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 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 15:32:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5992 states. [2021-01-20 15:32:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-01-20 15:32:03,298 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:32:03,299 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:32:03,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:32:03,514 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:32:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:32:03,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1998341565, now seen corresponding path program 15 times [2021-01-20 15:32:03,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:32:03,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646321772] [2021-01-20 15:32:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:32:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:32:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 43 proven. 469 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-01-20 15:32:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646321772] [2021-01-20 15:32:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900897119] [2021-01-20 15:32:04,701 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 15:32:04,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-20 15:32:04,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:32:04,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-20 15:32:04,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:32:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-01-20 15:32:06,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:32:06,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2021-01-20 15:32:06,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204641125] [2021-01-20 15:32:06,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-20 15:32:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:32:06,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-20 15:32:06,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2021-01-20 15:32:06,053 INFO L87 Difference]: Start difference. First operand 5992 states. Second operand has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 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 15:32:20,172 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-01-20 15:32:32,204 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-20 15:32:44,271 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-01-20 15:36:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:36:52,096 INFO L93 Difference]: Finished difference Result 7062 states and 14082 transitions. [2021-01-20 15:36:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2021-01-20 15:36:52,097 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 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 186 [2021-01-20 15:36:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:36:52,106 INFO L225 Difference]: With dead ends: 7062 [2021-01-20 15:36:52,106 INFO L226 Difference]: Without dead ends: 7062 [2021-01-20 15:36:52,203 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2192 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 1032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534389 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=187686, Invalid=880436, Unknown=0, NotChecked=0, Total=1068122 [2021-01-20 15:36:52,204 INFO L78 Accepts]: Start accepts. Automaton has 7062 states. Word has length 186 [2021-01-20 15:36:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:36:52,204 INFO L481 AbstractCegarLoop]: Abstraction has 7062 states. [2021-01-20 15:36:52,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 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 15:36:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states. [2021-01-20 15:36:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-01-20 15:36:52,221 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:36:52,222 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:36:52,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-20 15:36:52,439 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:36:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:36:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash -423066320, now seen corresponding path program 16 times [2021-01-20 15:36:52,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:36:52,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290165550] [2021-01-20 15:36:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:36:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:36:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 50 proven. 540 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-01-20 15:36:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290165550] [2021-01-20 15:36:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371905795] [2021-01-20 15:36:54,398 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 15:36:54,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-20 15:36:54,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:36:54,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-20 15:36:54,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:36:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 50 proven. 540 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-01-20 15:36:54,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:36:54,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-01-20 15:36:54,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029986576] [2021-01-20 15:36:54,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-20 15:36:54,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:36:54,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-20 15:36:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-01-20 15:36:54,831 INFO L87 Difference]: Start difference. First operand 7062 states. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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 15:36:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:36:58,257 INFO L93 Difference]: Finished difference Result 7452 states and 14862 transitions. [2021-01-20 15:36:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-20 15:36:58,261 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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 199 [2021-01-20 15:36:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:36:58,271 INFO L225 Difference]: With dead ends: 7452 [2021-01-20 15:36:58,271 INFO L226 Difference]: Without dead ends: 7452 [2021-01-20 15:36:58,272 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-01-20 15:36:58,272 INFO L78 Accepts]: Start accepts. Automaton has 7452 states. Word has length 199 [2021-01-20 15:36:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:36:58,273 INFO L481 AbstractCegarLoop]: Abstraction has 7452 states. [2021-01-20 15:36:58,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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 15:36:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states. [2021-01-20 15:36:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-01-20 15:36:58,288 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:36:58,288 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:36:58,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:36:58,490 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:36:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:36:58,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1883749160, now seen corresponding path program 17 times [2021-01-20 15:36:58,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:36:58,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247246562] [2021-01-20 15:36:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:36:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:37:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 50 proven. 616 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-01-20 15:37:00,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247246562] [2021-01-20 15:37:00,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123190958] [2021-01-20 15:37:00,657 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 15:37:00,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-01-20 15:37:00,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:37:00,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-20 15:37:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:37:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 50 proven. 616 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-01-20 15:37:01,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:37:01,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-01-20 15:37:01,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124333582] [2021-01-20 15:37:01,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-20 15:37:01,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:37:01,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-20 15:37:01,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-01-20 15:37:01,068 INFO L87 Difference]: Start difference. First operand 7452 states. Second operand has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 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 15:37:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 15:37:04,734 INFO L93 Difference]: Finished difference Result 7842 states and 15642 transitions. [2021-01-20 15:37:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-20 15:37:04,739 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 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 204 [2021-01-20 15:37:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 15:37:04,747 INFO L225 Difference]: With dead ends: 7842 [2021-01-20 15:37:04,748 INFO L226 Difference]: Without dead ends: 7842 [2021-01-20 15:37:04,749 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-01-20 15:37:04,749 INFO L78 Accepts]: Start accepts. Automaton has 7842 states. Word has length 204 [2021-01-20 15:37:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 15:37:04,749 INFO L481 AbstractCegarLoop]: Abstraction has 7842 states. [2021-01-20 15:37:04,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 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 15:37:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states. [2021-01-20 15:37:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-01-20 15:37:04,761 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 15:37:04,762 INFO L504 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 15:37:04,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-20 15:37:04,975 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 15:37:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 15:37:04,976 INFO L82 PathProgramCache]: Analyzing trace with hash 813043248, now seen corresponding path program 18 times [2021-01-20 15:37:04,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 15:37:04,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268108034] [2021-01-20 15:37:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 15:37:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 15:37:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 50 proven. 697 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-01-20 15:37:07,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268108034] [2021-01-20 15:37:07,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140348526] [2021-01-20 15:37:07,693 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 15:37:08,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-20 15:37:08,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-20 15:37:08,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-20 15:37:08,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-20 15:37:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-01-20 15:37:10,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-20 15:37:10,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2021-01-20 15:37:10,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137174144] [2021-01-20 15:37:10,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-20 15:37:10,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 15:37:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-20 15:37:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2021-01-20 15:37:10,070 INFO L87 Difference]: Start difference. First operand 7842 states. Second operand has 54 states, 54 states have (on average 4.481481481481482) internal successors, (242), 54 states have internal predecessors, (242), 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 15:37:32,009 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-01-20 15:38:18,091 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 7 Received shutdown request... [2021-01-20 15:42:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1030 states. [2021-01-20 15:42:32,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-20 15:42:32,813 WARN L546 AbstractCegarLoop]: Verification canceled [2021-01-20 15:42:32,817 WARN L250 ceAbstractionStarter]: Timeout [2021-01-20 15:42:32,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 03:42:32 BasicIcfg [2021-01-20 15:42:32,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 15:42:32,819 INFO L168 Benchmark]: Toolchain (without parser) took 818326.53 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 276.1 MB in the beginning and 414.1 MB in the end (delta: -138.0 MB). Peak memory consumption was 867.1 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:32,820 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 15:42:32,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1240.10 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 231.4 MB in the end (delta: 44.5 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:32,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.83 ms. Allocated memory is still 302.0 MB. Free memory was 231.4 MB in the beginning and 228.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:32,821 INFO L168 Benchmark]: Boogie Preprocessor took 73.34 ms. Allocated memory is still 302.0 MB. Free memory was 228.2 MB in the beginning and 227.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 15:42:32,821 INFO L168 Benchmark]: RCFGBuilder took 703.05 ms. Allocated memory is still 302.0 MB. Free memory was 227.2 MB in the beginning and 199.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:32,822 INFO L168 Benchmark]: TraceAbstraction took 816185.88 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 199.9 MB in the beginning and 414.1 MB in the end (delta: -214.2 MB). Peak memory consumption was 792.5 MB. Max. memory is 16.0 GB. [2021-01-20 15:42:32,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1240.10 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 231.4 MB in the end (delta: 44.5 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 114.83 ms. Allocated memory is still 302.0 MB. Free memory was 231.4 MB in the beginning and 228.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 73.34 ms. Allocated memory is still 302.0 MB. Free memory was 228.2 MB in the beginning and 227.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 703.05 ms. Allocated memory is still 302.0 MB. Free memory was 227.2 MB in the beginning and 199.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 816185.88 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 199.9 MB in the beginning and 414.1 MB in the end (delta: -214.2 MB). Peak memory consumption was 792.5 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 (7842states) and FLOYD_HOARE automaton (currently 1030 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1055 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 816.0s, OverallIterations: 21, TraceHistogramMax: 17, AutomataDifference: 786.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2161 SDtfs, 38604 SDslu, 30557 SDs, 0 SdLazy, 4623 SolverSat, 4266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10186 GetRequests, 6143 SyntacticMatches, 0 SemanticMatches, 4042 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463959 ImplicationChecksByTransitivity, 775.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7842occurred 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: 1.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 5434 NumberOfCodeBlocks, 4981 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 5395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1475595 SizeOfPredicates, 280 NumberOfNonLiveVariables, 4699 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 5056/12577 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