/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:00:50,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:00:50,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:00:50,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 03:00:50,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 03:00:50,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 03:00:50,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 03:00:50,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 03:00:50,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 03:00:50,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 03:00:50,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 03:00:50,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 03:00:50,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:00:50,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:00:50,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:00:50,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:00:50,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:00:50,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:00:50,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:00:50,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:00:50,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:00:50,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:00:50,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:00:50,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:00:50,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 03:00:50,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:00:50,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:00:50,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:00:50,967 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 [2021-06-05 03:00:51,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:00:51,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:00:51,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:00:51,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:00:51,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:00:51,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:00:51,011 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:00:51,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:00:51,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:00:51,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:00:51,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:00:51,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:00:51,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:00:51,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:00:51,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:00:51,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:00:51,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:00:51,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:00:51,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:00:51,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:00:51,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:00:51,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:00:51,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 03:00:51,350 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 03:00:51,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 03:00:51,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1252dfd/fe4d508fcb0e44e2b122d4afa28f4117/FLAG4bc32eefd [2021-06-05 03:00:52,288 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 03:00:52,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 03:00:52,288 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:00:52,289 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:00:52,289 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 03:00:52,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1252dfd/fe4d508fcb0e44e2b122d4afa28f4117/FLAG4bc32eefd [2021-06-05 03:00:52,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1252dfd/fe4d508fcb0e44e2b122d4afa28f4117 [2021-06-05 03:00:52,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:00:52,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 03:00:52,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 03:00:52,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 03:00:52,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 03:00:52,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:52,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32183480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52, skipping insertion in model container [2021-06-05 03:00:52,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:52,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 03:00:52,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 03:00:52,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:00:52,954 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 03:00:52,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 03:00:52,978 INFO L208 MainTranslator]: Completed translation [2021-06-05 03:00:52,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52 WrapperNode [2021-06-05 03:00:52,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 03:00:52,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:00:52,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:00:52,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:00:52,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:52,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:00:53,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:00:53,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:00:53,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:00:53,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (1/1) ... [2021-06-05 03:00:53,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:00:53,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:00:53,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:00:53,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:00:53,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (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 [2021-06-05 03:00:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 03:00:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:00:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:00:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 03:00:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2021-06-05 03:00:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2021-06-05 03:00:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2021-06-05 03:00:53,090 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2021-06-05 03:00:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 03:00:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 03:00:53,091 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:00:53,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:00:53,335 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 03:00:53,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:00:53 BoogieIcfgContainer [2021-06-05 03:00:53,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:00:53,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:00:53,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:00:53,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:00:53,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 03:00:52" (1/3) ... [2021-06-05 03:00:53,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d7cb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:00:53, skipping insertion in model container [2021-06-05 03:00:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 03:00:52" (2/3) ... [2021-06-05 03:00:53,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d7cb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:00:53, skipping insertion in model container [2021-06-05 03:00:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:00:53" (3/3) ... [2021-06-05 03:00:53,342 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2021-06-05 03:00:53,348 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:00:53,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:00:53,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:00:53,354 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:00:53,388 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,388 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,388 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,388 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,388 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,389 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,389 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,389 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,389 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,390 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,390 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,390 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,390 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,390 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,391 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,391 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,391 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,391 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,391 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,392 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,392 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,392 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,393 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,393 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,393 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,393 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,393 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,394 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,394 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,394 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,394 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,394 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,395 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,396 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,396 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,396 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,396 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,396 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,397 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,398 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,399 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,399 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,399 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,399 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,403 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,403 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,403 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,404 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,404 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:00:53,414 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 03:00:53,433 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 03:00:53,451 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:00:53,451 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:00:53,451 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:00:53,451 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:00:53,451 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:00:53,451 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:00:53,452 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:00:53,452 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:00:53,461 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 62 transitions, 146 flow [2021-06-05 03:00:53,500 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 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) [2021-06-05 03:00:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 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) [2021-06-05 03:00:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:00:53,520 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:53,521 INFO L521 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] [2021-06-05 03:00:53,521 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1921878319, now seen corresponding path program 1 times [2021-06-05 03:00:53,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:53,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519823383] [2021-06-05 03:00:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:00:53,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:53,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519823383] [2021-06-05 03:00:53,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519823383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:00:53,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:00:53,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 03:00:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43829746] [2021-06-05 03:00:53,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 03:00:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 03:00:53,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:00:53,692 INFO L87 Difference]: Start difference. First operand has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 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 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-06-05 03:00:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:53,729 INFO L93 Difference]: Finished difference Result 544 states and 1365 transitions. [2021-06-05 03:00:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 03:00:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-06-05 03:00:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:53,753 INFO L225 Difference]: With dead ends: 544 [2021-06-05 03:00:53,754 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 03:00:53,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 03:00:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 03:00:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-06-05 03:00:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.5364485981308413) internal successors, (1357), 535 states have internal predecessors, (1357), 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) [2021-06-05 03:00:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1357 transitions. [2021-06-05 03:00:53,852 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1357 transitions. Word has length 36 [2021-06-05 03:00:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:53,853 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1357 transitions. [2021-06-05 03:00:53,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-06-05 03:00:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1357 transitions. [2021-06-05 03:00:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 03:00:53,862 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:53,862 INFO L521 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] [2021-06-05 03:00:53,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:00:53,863 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2134152753, now seen corresponding path program 1 times [2021-06-05 03:00:53,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:53,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872936341] [2021-06-05 03:00:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:00:53,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:53,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872936341] [2021-06-05 03:00:53,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872936341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:00:53,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:00:53,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:00:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501874815] [2021-06-05 03:00:53,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:00:53,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:00:53,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:00:53,967 INFO L87 Difference]: Start difference. First operand 536 states and 1357 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-06-05 03:00:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:54,012 INFO L93 Difference]: Finished difference Result 781 states and 1997 transitions. [2021-06-05 03:00:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:00:54,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-06-05 03:00:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:54,018 INFO L225 Difference]: With dead ends: 781 [2021-06-05 03:00:54,018 INFO L226 Difference]: Without dead ends: 781 [2021-06-05 03:00:54,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:00:54,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-06-05 03:00:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 585. [2021-06-05 03:00:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 2.5428082191780823) internal successors, (1485), 584 states have internal predecessors, (1485), 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) [2021-06-05 03:00:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1485 transitions. [2021-06-05 03:00:54,043 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1485 transitions. Word has length 36 [2021-06-05 03:00:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:54,043 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1485 transitions. [2021-06-05 03:00:54,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-06-05 03:00:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1485 transitions. [2021-06-05 03:00:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 03:00:54,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:54,047 INFO L521 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] [2021-06-05 03:00:54,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:00:54,048 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:54,051 INFO L82 PathProgramCache]: Analyzing trace with hash 753424717, now seen corresponding path program 1 times [2021-06-05 03:00:54,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:54,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407438855] [2021-06-05 03:00:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:00:54,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:54,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407438855] [2021-06-05 03:00:54,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407438855] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:54,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858372839] [2021-06-05 03:00:54,120 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 [2021-06-05 03:00:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:54,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 03:00:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:00:54,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858372839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:00:54,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 03:00:54,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 03:00:54,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741114115] [2021-06-05 03:00:54,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:00:54,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:54,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:00:54,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 03:00:54,314 INFO L87 Difference]: Start difference. First operand 585 states and 1485 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-06-05 03:00:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:54,342 INFO L93 Difference]: Finished difference Result 820 states and 2120 transitions. [2021-06-05 03:00:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:00:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-06-05 03:00:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:54,350 INFO L225 Difference]: With dead ends: 820 [2021-06-05 03:00:54,350 INFO L226 Difference]: Without dead ends: 820 [2021-06-05 03:00:54,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 03:00:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-06-05 03:00:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 632. [2021-06-05 03:00:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 2.554675118858954) internal successors, (1612), 631 states have internal predecessors, (1612), 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) [2021-06-05 03:00:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1612 transitions. [2021-06-05 03:00:54,373 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1612 transitions. Word has length 42 [2021-06-05 03:00:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:54,374 INFO L482 AbstractCegarLoop]: Abstraction has 632 states and 1612 transitions. [2021-06-05 03:00:54,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-06-05 03:00:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1612 transitions. [2021-06-05 03:00:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 03:00:54,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:54,376 INFO L521 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] [2021-06-05 03:00:54,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 03:00:54,589 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:54,590 INFO L82 PathProgramCache]: Analyzing trace with hash 415797961, now seen corresponding path program 1 times [2021-06-05 03:00:54,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:54,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817233696] [2021-06-05 03:00:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:00:54,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:54,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817233696] [2021-06-05 03:00:54,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817233696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:54,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076960582] [2021-06-05 03:00:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-05 03:00:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:54,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 03:00:54,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:00:54,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076960582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:54,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:00:54,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 03:00:54,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256608444] [2021-06-05 03:00:54,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:00:54,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:54,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:00:54,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:00:54,897 INFO L87 Difference]: Start difference. First operand 632 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-05 03:00:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:54,969 INFO L93 Difference]: Finished difference Result 1162 states and 3002 transitions. [2021-06-05 03:00:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 03:00:54,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 48 [2021-06-05 03:00:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:54,980 INFO L225 Difference]: With dead ends: 1162 [2021-06-05 03:00:54,980 INFO L226 Difference]: Without dead ends: 1162 [2021-06-05 03:00:54,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:00:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-06-05 03:00:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 950. [2021-06-05 03:00:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 2.577449947312961) internal successors, (2446), 949 states have internal predecessors, (2446), 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) [2021-06-05 03:00:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2446 transitions. [2021-06-05 03:00:55,011 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2446 transitions. Word has length 48 [2021-06-05 03:00:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:55,011 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2446 transitions. [2021-06-05 03:00:55,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-05 03:00:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2446 transitions. [2021-06-05 03:00:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 03:00:55,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:55,014 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-06-05 03:00:55,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:00:55,227 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1237021723, now seen corresponding path program 2 times [2021-06-05 03:00:55,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:55,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714384999] [2021-06-05 03:00:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:55,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:55,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714384999] [2021-06-05 03:00:55,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714384999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:55,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392476187] [2021-06-05 03:00:55,307 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 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 [2021-06-05 03:00:55,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:00:55,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:00:55,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 03:00:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:55,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392476187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:55,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:00:55,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 03:00:55,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303523031] [2021-06-05 03:00:55,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:00:55,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:55,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:00:55,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:00:55,480 INFO L87 Difference]: Start difference. First operand 950 states and 2446 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-05 03:00:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:55,533 INFO L93 Difference]: Finished difference Result 1660 states and 4376 transitions. [2021-06-05 03:00:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 03:00:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-06-05 03:00:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:55,543 INFO L225 Difference]: With dead ends: 1660 [2021-06-05 03:00:55,544 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 03:00:55,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:00:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 03:00:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1376. [2021-06-05 03:00:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 2.621090909090909) internal successors, (3604), 1375 states have internal predecessors, (3604), 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) [2021-06-05 03:00:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3604 transitions. [2021-06-05 03:00:55,581 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3604 transitions. Word has length 54 [2021-06-05 03:00:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:55,582 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 3604 transitions. [2021-06-05 03:00:55,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-05 03:00:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3604 transitions. [2021-06-05 03:00:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 03:00:55,587 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:55,587 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-06-05 03:00:55,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:00:55,814 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:55,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1922403487, now seen corresponding path program 3 times [2021-06-05 03:00:55,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:55,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363217600] [2021-06-05 03:00:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:55,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:55,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363217600] [2021-06-05 03:00:55,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363217600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:55,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144466137] [2021-06-05 03:00:55,927 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 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 [2021-06-05 03:00:55,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 03:00:55,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:00:55,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 03:00:55,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:56,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144466137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:56,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:00:56,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 03:00:56,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536506409] [2021-06-05 03:00:56,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 03:00:56,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 03:00:56,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 03:00:56,111 INFO L87 Difference]: Start difference. First operand 1376 states and 3604 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-06-05 03:00:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:56,199 INFO L93 Difference]: Finished difference Result 2146 states and 5654 transitions. [2021-06-05 03:00:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 03:00:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 [2021-06-05 03:00:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:56,209 INFO L225 Difference]: With dead ends: 2146 [2021-06-05 03:00:56,209 INFO L226 Difference]: Without dead ends: 2146 [2021-06-05 03:00:56,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:00:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-06-05 03:00:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1838. [2021-06-05 03:00:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 2.6314643440391943) internal successors, (4834), 1837 states have internal predecessors, (4834), 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) [2021-06-05 03:00:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4834 transitions. [2021-06-05 03:00:56,271 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4834 transitions. Word has length 60 [2021-06-05 03:00:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:56,273 INFO L482 AbstractCegarLoop]: Abstraction has 1838 states and 4834 transitions. [2021-06-05 03:00:56,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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) [2021-06-05 03:00:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4834 transitions. [2021-06-05 03:00:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 03:00:56,277 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:56,277 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-06-05 03:00:56,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:00:56,513 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1376625277, now seen corresponding path program 4 times [2021-06-05 03:00:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:56,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881551110] [2021-06-05 03:00:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:56,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:56,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881551110] [2021-06-05 03:00:56,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881551110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:56,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479071121] [2021-06-05 03:00:56,589 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 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 [2021-06-05 03:00:56,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:00:56,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:00:56,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:00:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:56,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479071121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:56,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:00:56,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 03:00:56,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669634262] [2021-06-05 03:00:56,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 03:00:56,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:56,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 03:00:56,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 03:00:56,793 INFO L87 Difference]: Start difference. First operand 1838 states and 4834 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2021-06-05 03:00:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:56,920 INFO L93 Difference]: Finished difference Result 2608 states and 6884 transitions. [2021-06-05 03:00:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 03:00:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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 66 [2021-06-05 03:00:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:56,931 INFO L225 Difference]: With dead ends: 2608 [2021-06-05 03:00:56,931 INFO L226 Difference]: Without dead ends: 2608 [2021-06-05 03:00:56,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:00:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-06-05 03:00:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2300. [2021-06-05 03:00:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 2.6376685515441496) internal successors, (6064), 2299 states have internal predecessors, (6064), 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) [2021-06-05 03:00:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6064 transitions. [2021-06-05 03:00:56,994 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6064 transitions. Word has length 66 [2021-06-05 03:00:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:56,994 INFO L482 AbstractCegarLoop]: Abstraction has 2300 states and 6064 transitions. [2021-06-05 03:00:56,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2021-06-05 03:00:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6064 transitions. [2021-06-05 03:00:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-06-05 03:00:56,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:56,999 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2021-06-05 03:00:57,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 03:00:57,213 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash -562033511, now seen corresponding path program 5 times [2021-06-05 03:00:57,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:57,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932774751] [2021-06-05 03:00:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 03:00:57,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:57,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932774751] [2021-06-05 03:00:57,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932774751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:57,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153343557] [2021-06-05 03:00:57,302 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 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 [2021-06-05 03:00:57,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 03:00:57,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:00:57,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 03:00:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:00:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-06-05 03:00:57,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153343557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:57,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:00:57,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-06-05 03:00:57,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998483632] [2021-06-05 03:00:57,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:00:57,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:00:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:00:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:00:57,546 INFO L87 Difference]: Start difference. First operand 2300 states and 6064 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 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) [2021-06-05 03:00:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:00:59,500 INFO L93 Difference]: Finished difference Result 4192 states and 11204 transitions. [2021-06-05 03:00:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 03:00:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 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 72 [2021-06-05 03:00:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:00:59,516 INFO L225 Difference]: With dead ends: 4192 [2021-06-05 03:00:59,516 INFO L226 Difference]: Without dead ends: 4192 [2021-06-05 03:00:59,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5698 ImplicationChecksByTransitivity, 1662.3ms TimeCoverageRelationStatistics Valid=3111, Invalid=10931, Unknown=0, NotChecked=0, Total=14042 [2021-06-05 03:00:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2021-06-05 03:00:59,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3620. [2021-06-05 03:00:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 2.6637192594639405) internal successors, (9640), 3619 states have internal predecessors, (9640), 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) [2021-06-05 03:00:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 9640 transitions. [2021-06-05 03:00:59,610 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 9640 transitions. Word has length 72 [2021-06-05 03:00:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:00:59,610 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 9640 transitions. [2021-06-05 03:00:59,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 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) [2021-06-05 03:00:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 9640 transitions. [2021-06-05 03:00:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-06-05 03:00:59,618 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:00:59,618 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:00:59,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:00:59,845 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:00:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:00:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1969208625, now seen corresponding path program 6 times [2021-06-05 03:00:59,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:00:59,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112860838] [2021-06-05 03:00:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:00:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:00:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 03:00:59,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:00:59,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112860838] [2021-06-05 03:00:59,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112860838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:00:59,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834936378] [2021-06-05 03:00:59,966 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 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 [2021-06-05 03:01:00,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 03:01:00,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:00,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:01:00,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 03:01:00,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834936378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:00,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:00,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 03:01:00,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585236962] [2021-06-05 03:01:00,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 03:01:00,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:00,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 03:01:00,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 03:01:00,182 INFO L87 Difference]: Start difference. First operand 3620 states and 9640 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2021-06-05 03:01:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:00,276 INFO L93 Difference]: Finished difference Result 5050 states and 13550 transitions. [2021-06-05 03:01:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 03:01:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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 84 [2021-06-05 03:01:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:00,298 INFO L225 Difference]: With dead ends: 5050 [2021-06-05 03:01:00,298 INFO L226 Difference]: Without dead ends: 5050 [2021-06-05 03:01:00,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:01:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2021-06-05 03:01:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4478. [2021-06-05 03:01:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.677239222693768) internal successors, (11986), 4477 states have internal predecessors, (11986), 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) [2021-06-05 03:01:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11986 transitions. [2021-06-05 03:01:00,457 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11986 transitions. Word has length 84 [2021-06-05 03:01:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:00,458 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11986 transitions. [2021-06-05 03:01:00,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2021-06-05 03:01:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11986 transitions. [2021-06-05 03:01:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 03:01:00,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:00,477 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2021-06-05 03:01:00,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:01:00,693 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 301366189, now seen corresponding path program 7 times [2021-06-05 03:01:00,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:00,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006034035] [2021-06-05 03:01:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 03:01:00,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:00,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006034035] [2021-06-05 03:01:00,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006034035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:00,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92450167] [2021-06-05 03:01:00,790 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 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 [2021-06-05 03:01:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:00,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 03:01:00,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:01:01,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92450167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:01:01,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 03:01:01,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 30 [2021-06-05 03:01:01,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764583772] [2021-06-05 03:01:01,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 03:01:01,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:01,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 03:01:01,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-06-05 03:01:01,262 INFO L87 Difference]: Start difference. First operand 4478 states and 11986 transitions. Second operand has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 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) [2021-06-05 03:01:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:01,956 INFO L93 Difference]: Finished difference Result 15668 states and 42041 transitions. [2021-06-05 03:01:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 03:01:01,956 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 03:01:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:01,975 INFO L225 Difference]: With dead ends: 15668 [2021-06-05 03:01:01,975 INFO L226 Difference]: Without dead ends: 9747 [2021-06-05 03:01:01,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 578.0ms TimeCoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 03:01:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9747 states. [2021-06-05 03:01:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9747 to 6182. [2021-06-05 03:01:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 6181 states have (on average 2.6917974437793237) internal successors, (16638), 6181 states have internal predecessors, (16638), 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) [2021-06-05 03:01:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 16638 transitions. [2021-06-05 03:01:02,158 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 16638 transitions. Word has length 90 [2021-06-05 03:01:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:02,158 INFO L482 AbstractCegarLoop]: Abstraction has 6182 states and 16638 transitions. [2021-06-05 03:01:02,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 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) [2021-06-05 03:01:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 16638 transitions. [2021-06-05 03:01:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 03:01:02,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:02,171 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2021-06-05 03:01:02,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 03:01:02,385 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash -511602725, now seen corresponding path program 8 times [2021-06-05 03:01:02,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:02,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189304140] [2021-06-05 03:01:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-06-05 03:01:02,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:02,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189304140] [2021-06-05 03:01:02,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189304140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:02,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95776459] [2021-06-05 03:01:02,493 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 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 [2021-06-05 03:01:02,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:01:02,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:02,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:01:02,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-06-05 03:01:02,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95776459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:02,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:02,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 03:01:02,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062910648] [2021-06-05 03:01:02,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:01:02,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:01:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:01:02,696 INFO L87 Difference]: Start difference. First operand 6182 states and 16638 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-06-05 03:01:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:02,821 INFO L93 Difference]: Finished difference Result 8056 states and 21746 transitions. [2021-06-05 03:01:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 03:01:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 03:01:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:02,838 INFO L225 Difference]: With dead ends: 8056 [2021-06-05 03:01:02,838 INFO L226 Difference]: Without dead ends: 8056 [2021-06-05 03:01:02,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-05 03:01:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-06-05 03:01:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 7656. [2021-06-05 03:01:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7655 states have (on average 2.6991508817766166) internal successors, (20662), 7655 states have internal predecessors, (20662), 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) [2021-06-05 03:01:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 20662 transitions. [2021-06-05 03:01:02,997 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 20662 transitions. Word has length 90 [2021-06-05 03:01:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:02,998 INFO L482 AbstractCegarLoop]: Abstraction has 7656 states and 20662 transitions. [2021-06-05 03:01:02,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-06-05 03:01:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 20662 transitions. [2021-06-05 03:01:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:03,011 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:03,011 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:03,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:01:03,225 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 517351127, now seen corresponding path program 9 times [2021-06-05 03:01:03,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:03,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615113351] [2021-06-05 03:01:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 98 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:01:03,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:03,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615113351] [2021-06-05 03:01:03,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615113351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:03,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896058299] [2021-06-05 03:01:03,482 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 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 [2021-06-05 03:01:03,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 03:01:03,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:03,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 03:01:03,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 109 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:01:03,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896058299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:03,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:03,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 03:01:03,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074406270] [2021-06-05 03:01:03,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 03:01:03,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:03,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 03:01:03,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-06-05 03:01:03,720 INFO L87 Difference]: Start difference. First operand 7656 states and 20662 transitions. Second operand has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 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) [2021-06-05 03:01:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:04,276 INFO L93 Difference]: Finished difference Result 20427 states and 54710 transitions. [2021-06-05 03:01:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 03:01:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 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 96 [2021-06-05 03:01:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:04,297 INFO L225 Difference]: With dead ends: 20427 [2021-06-05 03:01:04,298 INFO L226 Difference]: Without dead ends: 10763 [2021-06-05 03:01:04,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 448.5ms TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 03:01:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2021-06-05 03:01:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 7124. [2021-06-05 03:01:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 2.6879123964621647) internal successors, (19146), 7123 states have internal predecessors, (19146), 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) [2021-06-05 03:01:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19146 transitions. [2021-06-05 03:01:04,464 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19146 transitions. Word has length 96 [2021-06-05 03:01:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:04,464 INFO L482 AbstractCegarLoop]: Abstraction has 7124 states and 19146 transitions. [2021-06-05 03:01:04,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 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) [2021-06-05 03:01:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19146 transitions. [2021-06-05 03:01:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:04,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:04,477 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:04,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:01:04,694 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2104548449, now seen corresponding path program 10 times [2021-06-05 03:01:04,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:04,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339919692] [2021-06-05 03:01:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 03:01:04,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:04,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339919692] [2021-06-05 03:01:04,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339919692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:04,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326305754] [2021-06-05 03:01:04,921 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 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 [2021-06-05 03:01:04,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:01:04,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:04,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 03:01:04,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 03:01:05,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326305754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:05,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:05,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-05 03:01:05,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071249924] [2021-06-05 03:01:05,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 03:01:05,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 03:01:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 03:01:05,143 INFO L87 Difference]: Start difference. First operand 7124 states and 19146 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 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) [2021-06-05 03:01:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:05,619 INFO L93 Difference]: Finished difference Result 24237 states and 64802 transitions. [2021-06-05 03:01:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 03:01:05,619 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 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 96 [2021-06-05 03:01:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:05,639 INFO L225 Difference]: With dead ends: 24237 [2021-06-05 03:01:05,639 INFO L226 Difference]: Without dead ends: 10151 [2021-06-05 03:01:05,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 308.4ms TimeCoverageRelationStatistics Valid=464, Invalid=1176, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 03:01:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-06-05 03:01:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 6592. [2021-06-05 03:01:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 2.6748596571081777) internal successors, (17630), 6591 states have internal predecessors, (17630), 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) [2021-06-05 03:01:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 17630 transitions. [2021-06-05 03:01:05,799 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 17630 transitions. Word has length 96 [2021-06-05 03:01:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:05,799 INFO L482 AbstractCegarLoop]: Abstraction has 6592 states and 17630 transitions. [2021-06-05 03:01:05,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 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) [2021-06-05 03:01:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 17630 transitions. [2021-06-05 03:01:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:05,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:05,813 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:06,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 03:01:06,038 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:06,038 INFO L82 PathProgramCache]: Analyzing trace with hash 846817895, now seen corresponding path program 11 times [2021-06-05 03:01:06,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:06,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499436538] [2021-06-05 03:01:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 70 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-05 03:01:06,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:06,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499436538] [2021-06-05 03:01:06,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499436538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:06,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540522278] [2021-06-05 03:01:06,237 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 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 [2021-06-05 03:01:06,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 03:01:06,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:06,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 03:01:06,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 75 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-05 03:01:06,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540522278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:06,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:06,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 03:01:06,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536160641] [2021-06-05 03:01:06,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:01:06,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:06,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:01:06,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:01:06,461 INFO L87 Difference]: Start difference. First operand 6592 states and 17630 transitions. Second operand has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 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) [2021-06-05 03:01:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:06,873 INFO L93 Difference]: Finished difference Result 28917 states and 77264 transitions. [2021-06-05 03:01:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 03:01:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 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 96 [2021-06-05 03:01:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:06,893 INFO L225 Difference]: With dead ends: 28917 [2021-06-05 03:01:06,893 INFO L226 Difference]: Without dead ends: 9539 [2021-06-05 03:01:06,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 311.6ms TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 03:01:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-06-05 03:01:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 6060. [2021-06-05 03:01:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6059 states have (on average 2.659514771414425) internal successors, (16114), 6059 states have internal predecessors, (16114), 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) [2021-06-05 03:01:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 16114 transitions. [2021-06-05 03:01:07,034 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 16114 transitions. Word has length 96 [2021-06-05 03:01:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:07,034 INFO L482 AbstractCegarLoop]: Abstraction has 6060 states and 16114 transitions. [2021-06-05 03:01:07,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 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) [2021-06-05 03:01:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 16114 transitions. [2021-06-05 03:01:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:07,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:07,046 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:07,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 03:01:07,264 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:07,265 INFO L82 PathProgramCache]: Analyzing trace with hash 318077743, now seen corresponding path program 12 times [2021-06-05 03:01:07,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:07,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085913498] [2021-06-05 03:01:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 03:01:07,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:07,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085913498] [2021-06-05 03:01:07,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085913498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:07,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964584041] [2021-06-05 03:01:07,423 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 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 [2021-06-05 03:01:07,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 03:01:07,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 03:01:07,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 67 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 03:01:07,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964584041] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:07,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:07,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 03:01:07,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882349295] [2021-06-05 03:01:07,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:01:07,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:07,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:01:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:01:07,702 INFO L87 Difference]: Start difference. First operand 6060 states and 16114 transitions. Second operand has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 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) [2021-06-05 03:01:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:08,311 INFO L93 Difference]: Finished difference Result 33602 states and 89731 transitions. [2021-06-05 03:01:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 03:01:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 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 96 [2021-06-05 03:01:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:08,366 INFO L225 Difference]: With dead ends: 33602 [2021-06-05 03:01:08,366 INFO L226 Difference]: Without dead ends: 31824 [2021-06-05 03:01:08,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 375.2ms TimeCoverageRelationStatistics Valid=565, Invalid=1327, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 03:01:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31824 states. [2021-06-05 03:01:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31824 to 9556. [2021-06-05 03:01:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9555 states have (on average 2.678283621140764) internal successors, (25591), 9555 states have internal predecessors, (25591), 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) [2021-06-05 03:01:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 25591 transitions. [2021-06-05 03:01:08,728 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 25591 transitions. Word has length 96 [2021-06-05 03:01:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:08,729 INFO L482 AbstractCegarLoop]: Abstraction has 9556 states and 25591 transitions. [2021-06-05 03:01:08,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 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) [2021-06-05 03:01:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 25591 transitions. [2021-06-05 03:01:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:08,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:08,744 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:08,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 03:01:08,969 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash 701211889, now seen corresponding path program 13 times [2021-06-05 03:01:08,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:08,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094981721] [2021-06-05 03:01:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 03:01:09,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:09,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094981721] [2021-06-05 03:01:09,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094981721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:09,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265123891] [2021-06-05 03:01:09,038 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 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 [2021-06-05 03:01:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:01:09,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 11 proven. 67 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 03:01:09,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265123891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:09,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:09,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 03:01:09,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620660087] [2021-06-05 03:01:09,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 03:01:09,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 03:01:09,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 03:01:09,234 INFO L87 Difference]: Start difference. First operand 9556 states and 25591 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 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) [2021-06-05 03:01:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:09,479 INFO L93 Difference]: Finished difference Result 17120 states and 45885 transitions. [2021-06-05 03:01:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 03:01:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 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 96 [2021-06-05 03:01:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:09,492 INFO L225 Difference]: With dead ends: 17120 [2021-06-05 03:01:09,492 INFO L226 Difference]: Without dead ends: 8927 [2021-06-05 03:01:09,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-06-05 03:01:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2021-06-05 03:01:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 5528. [2021-06-05 03:01:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 2.6412158494662568) internal successors, (14598), 5527 states have internal predecessors, (14598), 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) [2021-06-05 03:01:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 14598 transitions. [2021-06-05 03:01:09,618 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 14598 transitions. Word has length 96 [2021-06-05 03:01:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:09,619 INFO L482 AbstractCegarLoop]: Abstraction has 5528 states and 14598 transitions. [2021-06-05 03:01:09,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 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) [2021-06-05 03:01:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 14598 transitions. [2021-06-05 03:01:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:09,630 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:09,630 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:09,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:01:09,845 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:09,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1577309687, now seen corresponding path program 14 times [2021-06-05 03:01:09,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:09,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945993040] [2021-06-05 03:01:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-06-05 03:01:09,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:09,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945993040] [2021-06-05 03:01:09,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945993040] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:09,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574525822] [2021-06-05 03:01:09,945 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 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 [2021-06-05 03:01:09,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:01:09,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:09,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 03:01:09,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-06-05 03:01:10,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574525822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:10,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:10,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 03:01:10,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259235352] [2021-06-05 03:01:10,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 03:01:10,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:10,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 03:01:10,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:01:10,149 INFO L87 Difference]: Start difference. First operand 5528 states and 14598 transitions. Second operand has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 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) [2021-06-05 03:01:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:10,358 INFO L93 Difference]: Finished difference Result 13071 states and 34969 transitions. [2021-06-05 03:01:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 03:01:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 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 96 [2021-06-05 03:01:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:10,374 INFO L225 Difference]: With dead ends: 13071 [2021-06-05 03:01:10,374 INFO L226 Difference]: Without dead ends: 12656 [2021-06-05 03:01:10,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:01:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-06-05 03:01:10,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 8025. [2021-06-05 03:01:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8025 states, 8024 states have (on average 2.6952891326021935) internal successors, (21627), 8024 states have internal predecessors, (21627), 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) [2021-06-05 03:01:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 21627 transitions. [2021-06-05 03:01:10,551 INFO L78 Accepts]: Start accepts. Automaton has 8025 states and 21627 transitions. Word has length 96 [2021-06-05 03:01:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:10,551 INFO L482 AbstractCegarLoop]: Abstraction has 8025 states and 21627 transitions. [2021-06-05 03:01:10,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 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) [2021-06-05 03:01:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8025 states and 21627 transitions. [2021-06-05 03:01:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 03:01:10,562 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:01:10,563 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:01:10,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 03:01:10,788 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:01:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:01:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash 698754679, now seen corresponding path program 15 times [2021-06-05 03:01:10,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:01:10,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634696564] [2021-06-05 03:01:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:01:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:01:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 45 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 03:01:10,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:01:10,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634696564] [2021-06-05 03:01:10,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634696564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:10,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77739853] [2021-06-05 03:01:10,903 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 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 [2021-06-05 03:01:10,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 03:01:10,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:01:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 03:01:10,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:01:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 67 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 03:01:11,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77739853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:01:11,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:01:11,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 03:01:11,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754030526] [2021-06-05 03:01:11,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:01:11,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:01:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:01:11,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:01:11,099 INFO L87 Difference]: Start difference. First operand 8025 states and 21627 transitions. Second operand has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-06-05 03:01:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:01:11,497 INFO L93 Difference]: Finished difference Result 25029 states and 67412 transitions. [2021-06-05 03:01:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 03:01:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 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 96 [2021-06-05 03:01:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:01:11,498 INFO L225 Difference]: With dead ends: 25029 [2021-06-05 03:01:11,498 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:01:11,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 03:01:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:01:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:01:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-05 03:01:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:01:11,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-06-05 03:01:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:01:11,499 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:01:11,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-06-05 03:01:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:01:11,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:01:11,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 03:01:11,701 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:01:11,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:01:11 BasicIcfg [2021-06-05 03:01:11,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:01:11,703 INFO L168 Benchmark]: Toolchain (without parser) took 18913.99 ms. Allocated memory was 350.2 MB in the beginning and 744.5 MB in the end (delta: 394.3 MB). Free memory was 312.5 MB in the beginning and 568.6 MB in the end (delta: -256.1 MB). Peak memory consumption was 142.2 MB. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 350.2 MB. Free memory is still 330.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.48 ms. Allocated memory is still 350.2 MB. Free memory was 312.3 MB in the beginning and 331.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.21 ms. Allocated memory is still 350.2 MB. Free memory was 331.6 MB in the beginning and 330.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: Boogie Preprocessor took 16.51 ms. Allocated memory is still 350.2 MB. Free memory was 330.1 MB in the beginning and 329.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: RCFGBuilder took 313.63 ms. Allocated memory is still 350.2 MB. Free memory was 329.1 MB in the beginning and 313.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L168 Benchmark]: TraceAbstraction took 18365.68 ms. Allocated memory was 350.2 MB in the beginning and 744.5 MB in the end (delta: 394.3 MB). Free memory was 312.8 MB in the beginning and 568.6 MB in the end (delta: -255.9 MB). Peak memory consumption was 141.3 MB. Max. memory is 16.0 GB. [2021-06-05 03:01:11,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 350.2 MB. Free memory is still 330.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 187.48 ms. Allocated memory is still 350.2 MB. Free memory was 312.3 MB in the beginning and 331.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.21 ms. Allocated memory is still 350.2 MB. Free memory was 331.6 MB in the beginning and 330.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.51 ms. Allocated memory is still 350.2 MB. Free memory was 330.1 MB in the beginning and 329.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 313.63 ms. Allocated memory is still 350.2 MB. Free memory was 329.1 MB in the beginning and 313.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18365.68 ms. Allocated memory was 350.2 MB in the beginning and 744.5 MB in the end (delta: 394.3 MB). Free memory was 312.8 MB in the beginning and 568.6 MB in the end (delta: -255.9 MB). Peak memory consumption was 141.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 79 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18251.6ms, OverallIterations: 18, TraceHistogramMax: 5, EmptinessCheckTime: 169.6ms, AutomataDifference: 6572.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 48.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2812 SDtfs, 7885 SDslu, 14701 SDs, 0 SdLazy, 2846 SolverSat, 518 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1432.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1837 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7732 ImplicationChecksByTransitivity, 4658.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9556occurred in iteration=15, InterpolantAutomatonStates: 375, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2033.1ms AutomataMinimizationTime, 18 MinimizatonAttempts, 47580 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 190.6ms SsaConstructionTime, 674.3ms SatisfiabilityAnalysisTime, 4341.7ms InterpolantComputationTime, 2628 NumberOfCodeBlocks, 2612 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 2594 ConstructedInterpolants, 0 QuantifiedInterpolants, 5732 SizeOfPredicates, 138 NumberOfNonLiveVariables, 2246 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 1826/2622 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...