/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 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:26:29,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:26:29,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:26:29,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 20:26:29,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 20:26:29,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 20:26:29,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 20:26:29,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 20:26:29,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 20:26:29,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 20:26:29,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 20:26:29,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 20:26:29,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 20:26:29,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 20:26:29,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 20:26:29,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 20:26:29,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 20:26:29,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 20:26:29,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 20:26:29,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 20:26:29,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 20:26:29,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 20:26:29,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 20:26:29,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 20:26:29,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 20:26:29,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 20:26:29,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 20:26:29,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 20:26:29,869 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 20:26:29,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:26:29,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:26:29,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:26:29,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:26:29,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:26:29,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:26:29,906 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:26:29,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:26:29,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:26:29,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:26:29,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:26:29,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:26:29,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:26:29,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:26:29,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:26:29,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:26:29,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:26:29,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:26:29,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:26:29,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:26:30,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:26:30,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:26:30,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:26:30,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 20:26:30,247 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 20:26:30,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 20:26:30,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c54eae/07ce16121a8d481f89d0b69618c70e60/FLAGcc0d109c1 [2021-06-05 20:26:30,667 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 20:26:30,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 20:26:30,669 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 20:26:30,669 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 20:26:30,669 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 20:26:30,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c54eae/07ce16121a8d481f89d0b69618c70e60/FLAGcc0d109c1 [2021-06-05 20:26:31,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20c54eae/07ce16121a8d481f89d0b69618c70e60 [2021-06-05 20:26:31,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:26:31,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 20:26:31,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 20:26:31,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 20:26:31,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 20:26:31,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531360f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31, skipping insertion in model container [2021-06-05 20:26:31,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 20:26:31,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 20:26:31,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:26:31,268 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 20:26:31,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:26:31,297 INFO L208 MainTranslator]: Completed translation [2021-06-05 20:26:31,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31 WrapperNode [2021-06-05 20:26:31,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 20:26:31,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:26:31,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:26:31,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:26:31,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:26:31,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:26:31,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:26:31,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:26:31,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (1/1) ... [2021-06-05 20:26:31,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:26:31,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:26:31,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:26:31,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:26:31,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (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 20:26:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 20:26:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:26:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:26:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 20:26:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2021-06-05 20:26:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2021-06-05 20:26:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2021-06-05 20:26:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2021-06-05 20:26:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 20:26:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 20:26:31,448 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 20:26:31,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:26:31,758 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 20:26:31,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:26:31 BoogieIcfgContainer [2021-06-05 20:26:31,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:26:31,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:26:31,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:26:31,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:26:31,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:26:31" (1/3) ... [2021-06-05 20:26:31,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e12c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:26:31, skipping insertion in model container [2021-06-05 20:26:31,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:26:31" (2/3) ... [2021-06-05 20:26:31,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e12c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:26:31, skipping insertion in model container [2021-06-05 20:26:31,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:26:31" (3/3) ... [2021-06-05 20:26:31,765 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2021-06-05 20:26:31,769 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:26:31,769 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:26:31,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:26:31,770 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:26:31,796 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,796 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,796 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,796 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,797 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,797 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,797 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,797 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,797 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,798 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,799 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,800 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,800 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,800 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,800 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,800 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,801 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,802 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,803 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,803 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,803 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,803 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,803 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,804 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,804 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,805 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,805 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,805 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,808 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,808 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,809 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,809 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,809 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:26:31,817 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 20:26:31,831 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 20:26:31,844 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:26:31,845 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:26:31,845 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:26:31,845 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:26:31,845 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:26:31,845 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:26:31,845 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:26:31,845 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:26:31,854 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 62 transitions, 146 flow [2021-06-05 20:26:31,890 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 20:26:31,893 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 20:26:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 20:26:31,915 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:31,915 INFO L554 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 20:26:31,916 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:31,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1921878319, now seen corresponding path program 1 times [2021-06-05 20:26:31,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:31,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977931481] [2021-06-05 20:26:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:32,048 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 20:26:32,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:32,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977931481] [2021-06-05 20:26:32,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977931481] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:26:32,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:26:32,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 20:26:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353712052] [2021-06-05 20:26:32,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 20:26:32,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:32,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 20:26:32,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 20:26:32,067 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 20:26:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:32,094 INFO L93 Difference]: Finished difference Result 544 states and 1365 transitions. [2021-06-05 20:26:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 20:26:32,095 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 20:26:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:32,110 INFO L225 Difference]: With dead ends: 544 [2021-06-05 20:26:32,111 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 20:26:32,112 INFO L810 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 20:26:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 20:26:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-06-05 20:26:32,180 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 20:26:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1357 transitions. [2021-06-05 20:26:32,189 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1357 transitions. Word has length 36 [2021-06-05 20:26:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:32,190 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1357 transitions. [2021-06-05 20:26:32,193 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 20:26:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1357 transitions. [2021-06-05 20:26:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 20:26:32,196 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:32,196 INFO L554 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 20:26:32,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:26:32,197 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:32,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2134152753, now seen corresponding path program 1 times [2021-06-05 20:26:32,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:32,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933113345] [2021-06-05 20:26:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:32,250 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 20:26:32,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:32,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933113345] [2021-06-05 20:26:32,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933113345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:26:32,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:26:32,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:26:32,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69154086] [2021-06-05 20:26:32,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:26:32,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:26:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:26:32,253 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 20:26:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:32,276 INFO L93 Difference]: Finished difference Result 781 states and 1997 transitions. [2021-06-05 20:26:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:26:32,277 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 20:26:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:32,284 INFO L225 Difference]: With dead ends: 781 [2021-06-05 20:26:32,284 INFO L226 Difference]: Without dead ends: 781 [2021-06-05 20:26:32,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:26:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-06-05 20:26:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 585. [2021-06-05 20:26:32,315 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 20:26:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1485 transitions. [2021-06-05 20:26:32,318 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1485 transitions. Word has length 36 [2021-06-05 20:26:32,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:32,319 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1485 transitions. [2021-06-05 20:26:32,319 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 20:26:32,319 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1485 transitions. [2021-06-05 20:26:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 20:26:32,321 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:32,321 INFO L554 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 20:26:32,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:26:32,321 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:32,322 INFO L82 PathProgramCache]: Analyzing trace with hash 753424717, now seen corresponding path program 1 times [2021-06-05 20:26:32,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:32,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192396757] [2021-06-05 20:26:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:32,401 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 20:26:32,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:32,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192396757] [2021-06-05 20:26:32,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192396757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:32,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507062360] [2021-06-05 20:26:32,402 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 20:26:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:32,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 20:26:32,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:32,597 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 20:26:32,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507062360] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:26:32,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 20:26:32,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 20:26:32,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351498935] [2021-06-05 20:26:32,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:26:32,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:32,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:26:32,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:26:32,600 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 20:26:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:32,617 INFO L93 Difference]: Finished difference Result 820 states and 2120 transitions. [2021-06-05 20:26:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:26:32,617 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 20:26:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:32,621 INFO L225 Difference]: With dead ends: 820 [2021-06-05 20:26:32,621 INFO L226 Difference]: Without dead ends: 820 [2021-06-05 20:26:32,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:26:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-06-05 20:26:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 632. [2021-06-05 20:26:32,641 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 20:26:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1612 transitions. [2021-06-05 20:26:32,644 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1612 transitions. Word has length 42 [2021-06-05 20:26:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:32,644 INFO L482 AbstractCegarLoop]: Abstraction has 632 states and 1612 transitions. [2021-06-05 20:26:32,644 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 20:26:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1612 transitions. [2021-06-05 20:26:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 20:26:32,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:32,646 INFO L554 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 20:26:32,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 20:26:32,871 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:32,871 INFO L82 PathProgramCache]: Analyzing trace with hash 415797961, now seen corresponding path program 1 times [2021-06-05 20:26:32,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:32,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068662492] [2021-06-05 20:26:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:32,941 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 20:26:32,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:32,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068662492] [2021-06-05 20:26:32,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068662492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:32,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949090265] [2021-06-05 20:26:32,942 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 20:26:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:33,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 20:26:33,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:33,212 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 20:26:33,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949090265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:33,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:33,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 20:26:33,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698012193] [2021-06-05 20:26:33,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:26:33,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:33,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:26:33,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:26:33,214 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 20:26:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:33,274 INFO L93 Difference]: Finished difference Result 1162 states and 3002 transitions. [2021-06-05 20:26:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:26:33,281 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 20:26:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:33,286 INFO L225 Difference]: With dead ends: 1162 [2021-06-05 20:26:33,286 INFO L226 Difference]: Without dead ends: 1162 [2021-06-05 20:26:33,287 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:26:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-06-05 20:26:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 950. [2021-06-05 20:26:33,319 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 20:26:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2446 transitions. [2021-06-05 20:26:33,323 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2446 transitions. Word has length 48 [2021-06-05 20:26:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:33,324 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2446 transitions. [2021-06-05 20:26:33,324 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 20:26:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2446 transitions. [2021-06-05 20:26:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 20:26:33,326 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:33,327 INFO L554 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 20:26:33,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:33,551 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1237021723, now seen corresponding path program 2 times [2021-06-05 20:26:33,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:33,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538074178] [2021-06-05 20:26:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:33,634 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 20:26:33,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:33,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538074178] [2021-06-05 20:26:33,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538074178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:33,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426221688] [2021-06-05 20:26:33,635 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 20:26:33,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:26:33,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:33,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 20:26:33,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:33,881 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 20:26:33,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426221688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:33,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:33,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 20:26:33,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834209596] [2021-06-05 20:26:33,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:26:33,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:26:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:26:33,883 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 20:26:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:33,981 INFO L93 Difference]: Finished difference Result 1660 states and 4376 transitions. [2021-06-05 20:26:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:26:33,981 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 20:26:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:33,990 INFO L225 Difference]: With dead ends: 1660 [2021-06-05 20:26:33,990 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 20:26:33,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:26:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 20:26:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1376. [2021-06-05 20:26:34,020 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 20:26:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3604 transitions. [2021-06-05 20:26:34,024 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3604 transitions. Word has length 54 [2021-06-05 20:26:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:34,025 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 3604 transitions. [2021-06-05 20:26:34,025 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 20:26:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3604 transitions. [2021-06-05 20:26:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 20:26:34,029 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:34,029 INFO L554 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 20:26:34,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:34,245 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1922403487, now seen corresponding path program 3 times [2021-06-05 20:26:34,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:34,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290839720] [2021-06-05 20:26:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:34,323 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 20:26:34,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:34,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290839720] [2021-06-05 20:26:34,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290839720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:34,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975085841] [2021-06-05 20:26:34,324 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 20:26:34,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 20:26:34,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:34,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 20:26:34,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:34,542 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 20:26:34,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975085841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:34,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:34,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 20:26:34,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859925265] [2021-06-05 20:26:34,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:26:34,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:26:34,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:26:34,545 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 20:26:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:34,615 INFO L93 Difference]: Finished difference Result 2146 states and 5654 transitions. [2021-06-05 20:26:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:26:34,616 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 20:26:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:34,625 INFO L225 Difference]: With dead ends: 2146 [2021-06-05 20:26:34,625 INFO L226 Difference]: Without dead ends: 2146 [2021-06-05 20:26:34,625 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 20:26:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-06-05 20:26:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1838. [2021-06-05 20:26:34,664 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 20:26:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4834 transitions. [2021-06-05 20:26:34,670 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4834 transitions. Word has length 60 [2021-06-05 20:26:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:34,670 INFO L482 AbstractCegarLoop]: Abstraction has 1838 states and 4834 transitions. [2021-06-05 20:26:34,670 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 20:26:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4834 transitions. [2021-06-05 20:26:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 20:26:34,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:34,674 INFO L554 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 20:26:34,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:34,890 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1376625277, now seen corresponding path program 4 times [2021-06-05 20:26:34,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:34,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982569268] [2021-06-05 20:26:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:34,964 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 20:26:34,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:34,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982569268] [2021-06-05 20:26:34,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982569268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:34,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945546101] [2021-06-05 20:26:34,965 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 20:26:35,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 20:26:35,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:35,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 20:26:35,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:35,152 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 20:26:35,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945546101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:35,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:35,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 20:26:35,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464984692] [2021-06-05 20:26:35,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 20:26:35,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:35,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 20:26:35,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 20:26:35,157 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 20:26:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:35,268 INFO L93 Difference]: Finished difference Result 2608 states and 6884 transitions. [2021-06-05 20:26:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 20:26:35,269 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 20:26:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:35,279 INFO L225 Difference]: With dead ends: 2608 [2021-06-05 20:26:35,279 INFO L226 Difference]: Without dead ends: 2608 [2021-06-05 20:26:35,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:26:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-06-05 20:26:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2300. [2021-06-05 20:26:35,331 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 20:26:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6064 transitions. [2021-06-05 20:26:35,339 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6064 transitions. Word has length 66 [2021-06-05 20:26:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:35,339 INFO L482 AbstractCegarLoop]: Abstraction has 2300 states and 6064 transitions. [2021-06-05 20:26:35,340 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 20:26:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6064 transitions. [2021-06-05 20:26:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-06-05 20:26:35,367 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:35,367 INFO L554 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 20:26:35,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 20:26:35,589 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash -562033511, now seen corresponding path program 5 times [2021-06-05 20:26:35,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:35,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13417814] [2021-06-05 20:26:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:35,692 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 20:26:35,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:35,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13417814] [2021-06-05 20:26:35,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13417814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:35,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953589061] [2021-06-05 20:26:35,693 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 20:26:35,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 20:26:35,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:35,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 20:26:35,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:35,914 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 20:26:35,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953589061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:35,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:35,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-06-05 20:26:35,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13400539] [2021-06-05 20:26:35,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 20:26:35,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:35,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 20:26:35,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 20:26:35,916 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 20:26:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:37,881 INFO L93 Difference]: Finished difference Result 4192 states and 11204 transitions. [2021-06-05 20:26:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 20:26:37,882 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 20:26:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:37,899 INFO L225 Difference]: With dead ends: 4192 [2021-06-05 20:26:37,899 INFO L226 Difference]: Without dead ends: 4192 [2021-06-05 20:26:37,902 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5698 ImplicationChecksByTransitivity, 1669.4ms TimeCoverageRelationStatistics Valid=3111, Invalid=10931, Unknown=0, NotChecked=0, Total=14042 [2021-06-05 20:26:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2021-06-05 20:26:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3620. [2021-06-05 20:26:37,975 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 20:26:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 9640 transitions. [2021-06-05 20:26:37,987 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 9640 transitions. Word has length 72 [2021-06-05 20:26:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:37,987 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 9640 transitions. [2021-06-05 20:26:37,988 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 20:26:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 9640 transitions. [2021-06-05 20:26:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-06-05 20:26:37,995 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:37,995 INFO L554 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 20:26:38,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:38,218 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:38,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:38,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1969208625, now seen corresponding path program 6 times [2021-06-05 20:26:38,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:38,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436140098] [2021-06-05 20:26:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:38,314 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 20:26:38,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:38,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436140098] [2021-06-05 20:26:38,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436140098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:38,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528890292] [2021-06-05 20:26:38,315 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 20:26:38,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 20:26:38,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:38,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 20:26:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:38,535 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 20:26:38,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528890292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:38,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:38,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 20:26:38,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105408408] [2021-06-05 20:26:38,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 20:26:38,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:38,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 20:26:38,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 20:26:38,537 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 20:26:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:38,627 INFO L93 Difference]: Finished difference Result 5050 states and 13550 transitions. [2021-06-05 20:26:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 20:26:38,627 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 20:26:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:38,658 INFO L225 Difference]: With dead ends: 5050 [2021-06-05 20:26:38,658 INFO L226 Difference]: Without dead ends: 5050 [2021-06-05 20:26:38,658 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:26:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2021-06-05 20:26:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4478. [2021-06-05 20:26:38,756 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 20:26:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11986 transitions. [2021-06-05 20:26:38,770 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11986 transitions. Word has length 84 [2021-06-05 20:26:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:38,772 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11986 transitions. [2021-06-05 20:26:38,772 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 20:26:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11986 transitions. [2021-06-05 20:26:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 20:26:38,785 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:38,785 INFO L554 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 20:26:39,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:39,001 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:39,001 INFO L82 PathProgramCache]: Analyzing trace with hash 301366189, now seen corresponding path program 7 times [2021-06-05 20:26:39,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:39,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543819327] [2021-06-05 20:26:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:39,079 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 20:26:39,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:39,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543819327] [2021-06-05 20:26:39,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543819327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:39,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068921068] [2021-06-05 20:26:39,079 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 20:26:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 20:26:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:39,569 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 20:26:39,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068921068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:26:39,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 20:26:39,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 30 [2021-06-05 20:26:39,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928622124] [2021-06-05 20:26:39,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 20:26:39,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:39,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 20:26:39,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-06-05 20:26:39,571 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 20:26:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:40,203 INFO L93 Difference]: Finished difference Result 15668 states and 42041 transitions. [2021-06-05 20:26:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:26:40,203 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 20:26:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:40,224 INFO L225 Difference]: With dead ends: 15668 [2021-06-05 20:26:40,224 INFO L226 Difference]: Without dead ends: 9747 [2021-06-05 20:26:40,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 583.4ms TimeCoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 20:26:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9747 states. [2021-06-05 20:26:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9747 to 6182. [2021-06-05 20:26:40,361 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 20:26:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 16638 transitions. [2021-06-05 20:26:40,376 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 16638 transitions. Word has length 90 [2021-06-05 20:26:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:40,377 INFO L482 AbstractCegarLoop]: Abstraction has 6182 states and 16638 transitions. [2021-06-05 20:26:40,377 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 20:26:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 16638 transitions. [2021-06-05 20:26:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 20:26:40,390 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:40,390 INFO L554 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 20:26:40,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 20:26:40,605 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:40,605 INFO L82 PathProgramCache]: Analyzing trace with hash -511602725, now seen corresponding path program 8 times [2021-06-05 20:26:40,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:40,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676954532] [2021-06-05 20:26:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:40,750 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 20:26:40,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:40,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676954532] [2021-06-05 20:26:40,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676954532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:40,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053417683] [2021-06-05 20:26:40,751 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 20:26:40,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:26:40,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:40,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 20:26:40,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:40,960 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 20:26:40,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053417683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:40,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:40,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 20:26:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511521172] [2021-06-05 20:26:40,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 20:26:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 20:26:40,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 20:26:40,961 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 20:26:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:41,089 INFO L93 Difference]: Finished difference Result 8056 states and 21746 transitions. [2021-06-05 20:26:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 20:26:41,089 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 20:26:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:41,104 INFO L225 Difference]: With dead ends: 8056 [2021-06-05 20:26:41,104 INFO L226 Difference]: Without dead ends: 8056 [2021-06-05 20:26:41,104 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-05 20:26:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-06-05 20:26:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 7656. [2021-06-05 20:26:41,226 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 20:26:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 20662 transitions. [2021-06-05 20:26:41,242 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 20662 transitions. Word has length 90 [2021-06-05 20:26:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:41,242 INFO L482 AbstractCegarLoop]: Abstraction has 7656 states and 20662 transitions. [2021-06-05 20:26:41,242 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 20:26:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 20662 transitions. [2021-06-05 20:26:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:41,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:41,257 INFO L554 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 20:26:41,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:41,473 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:41,473 INFO L82 PathProgramCache]: Analyzing trace with hash 517351127, now seen corresponding path program 9 times [2021-06-05 20:26:41,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:41,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084863380] [2021-06-05 20:26:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:41,686 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 20:26:41,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:41,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084863380] [2021-06-05 20:26:41,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084863380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:41,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317685503] [2021-06-05 20:26:41,686 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 20:26:41,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 20:26:41,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:41,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 20:26:41,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:41,990 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 20:26:41,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317685503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:41,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:41,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 20:26:41,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23787350] [2021-06-05 20:26:41,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 20:26:41,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:41,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 20:26:41,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-06-05 20:26:41,993 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 20:26:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:42,574 INFO L93 Difference]: Finished difference Result 20427 states and 54710 transitions. [2021-06-05 20:26:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:26:42,574 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 20:26:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:42,594 INFO L225 Difference]: With dead ends: 20427 [2021-06-05 20:26:42,595 INFO L226 Difference]: Without dead ends: 10763 [2021-06-05 20:26:42,595 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 390.6ms TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:26:42,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2021-06-05 20:26:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 7124. [2021-06-05 20:26:42,728 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 20:26:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19146 transitions. [2021-06-05 20:26:42,744 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19146 transitions. Word has length 96 [2021-06-05 20:26:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:42,744 INFO L482 AbstractCegarLoop]: Abstraction has 7124 states and 19146 transitions. [2021-06-05 20:26:42,744 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 20:26:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19146 transitions. [2021-06-05 20:26:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:42,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:42,757 INFO L554 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 20:26:42,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:42,973 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2104548449, now seen corresponding path program 10 times [2021-06-05 20:26:42,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:42,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787546744] [2021-06-05 20:26:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:43,164 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 20:26:43,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:43,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787546744] [2021-06-05 20:26:43,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787546744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:43,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641110671] [2021-06-05 20:26:43,164 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 20:26:43,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 20:26:43,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 20:26:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:43,416 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 20:26:43,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641110671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:43,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:43,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-05 20:26:43,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617423417] [2021-06-05 20:26:43,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 20:26:43,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:43,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 20:26:43,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 20:26:43,419 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 20:26:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:43,916 INFO L93 Difference]: Finished difference Result 24237 states and 64802 transitions. [2021-06-05 20:26:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:26:43,916 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 20:26:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:43,937 INFO L225 Difference]: With dead ends: 24237 [2021-06-05 20:26:43,938 INFO L226 Difference]: Without dead ends: 10151 [2021-06-05 20:26:43,938 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 328.5ms TimeCoverageRelationStatistics Valid=464, Invalid=1176, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 20:26:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-06-05 20:26:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 6592. [2021-06-05 20:26:44,063 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 20:26:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 17630 transitions. [2021-06-05 20:26:44,077 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 17630 transitions. Word has length 96 [2021-06-05 20:26:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:44,077 INFO L482 AbstractCegarLoop]: Abstraction has 6592 states and 17630 transitions. [2021-06-05 20:26:44,077 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 20:26:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 17630 transitions. [2021-06-05 20:26:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:44,089 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:44,089 INFO L554 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 20:26:44,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 20:26:44,309 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:44,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash 846817895, now seen corresponding path program 11 times [2021-06-05 20:26:44,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:44,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679077611] [2021-06-05 20:26:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:44,466 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 20:26:44,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:44,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679077611] [2021-06-05 20:26:44,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679077611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:44,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499656519] [2021-06-05 20:26:44,466 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 20:26:44,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 20:26:44,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:44,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 20:26:44,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:44,734 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 20:26:44,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499656519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:44,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:44,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 20:26:44,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405939707] [2021-06-05 20:26:44,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:26:44,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:44,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:26:44,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:26:44,736 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 20:26:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:45,184 INFO L93 Difference]: Finished difference Result 28917 states and 77264 transitions. [2021-06-05 20:26:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 20:26:45,184 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 20:26:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:45,201 INFO L225 Difference]: With dead ends: 28917 [2021-06-05 20:26:45,201 INFO L226 Difference]: Without dead ends: 9539 [2021-06-05 20:26:45,202 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 289.7ms TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 20:26:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-06-05 20:26:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 6060. [2021-06-05 20:26:45,315 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 20:26:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 16114 transitions. [2021-06-05 20:26:45,328 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 16114 transitions. Word has length 96 [2021-06-05 20:26:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:45,328 INFO L482 AbstractCegarLoop]: Abstraction has 6060 states and 16114 transitions. [2021-06-05 20:26:45,328 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 20:26:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 16114 transitions. [2021-06-05 20:26:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:45,339 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:45,339 INFO L554 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 20:26:45,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 20:26:45,563 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 318077743, now seen corresponding path program 12 times [2021-06-05 20:26:45,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:45,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352852930] [2021-06-05 20:26:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:45,697 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 20:26:45,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:45,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352852930] [2021-06-05 20:26:45,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352852930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:45,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984990216] [2021-06-05 20:26:45,697 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 20:26:45,767 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 20:26:45,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 20:26:45,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:45,923 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 20:26:45,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984990216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:45,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:45,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 20:26:45,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971651862] [2021-06-05 20:26:45,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 20:26:45,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:45,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 20:26:45,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:26:45,925 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 20:26:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:46,515 INFO L93 Difference]: Finished difference Result 33602 states and 89731 transitions. [2021-06-05 20:26:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:26:46,516 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 20:26:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:46,577 INFO L225 Difference]: With dead ends: 33602 [2021-06-05 20:26:46,577 INFO L226 Difference]: Without dead ends: 31824 [2021-06-05 20:26:46,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 406.5ms TimeCoverageRelationStatistics Valid=565, Invalid=1327, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 20:26:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31824 states. [2021-06-05 20:26:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31824 to 9556. [2021-06-05 20:26:46,850 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 20:26:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 25591 transitions. [2021-06-05 20:26:46,866 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 25591 transitions. Word has length 96 [2021-06-05 20:26:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:46,866 INFO L482 AbstractCegarLoop]: Abstraction has 9556 states and 25591 transitions. [2021-06-05 20:26:46,866 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 20:26:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 25591 transitions. [2021-06-05 20:26:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:46,881 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:46,881 INFO L554 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 20:26:47,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 20:26:47,128 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1403149457, now seen corresponding path program 1 times [2021-06-05 20:26:47,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:47,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165043] [2021-06-05 20:26:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:47,198 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 20:26:47,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:47,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165043] [2021-06-05 20:26:47,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:47,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848089301] [2021-06-05 20:26:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order 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 20:26:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:47,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 20:26:47,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:47,414 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 20:26:47,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848089301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:47,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:47,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 20:26:47,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650393843] [2021-06-05 20:26:47,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 20:26:47,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:47,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 20:26:47,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 20:26:47,416 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 20:26:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:47,603 INFO L93 Difference]: Finished difference Result 17120 states and 45885 transitions. [2021-06-05 20:26:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 20:26:47,608 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 20:26:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:47,622 INFO L225 Difference]: With dead ends: 17120 [2021-06-05 20:26:47,622 INFO L226 Difference]: Without dead ends: 8927 [2021-06-05 20:26:47,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-06-05 20:26:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2021-06-05 20:26:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 5528. [2021-06-05 20:26:47,727 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 20:26:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 14598 transitions. [2021-06-05 20:26:47,738 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 14598 transitions. Word has length 96 [2021-06-05 20:26:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:47,738 INFO L482 AbstractCegarLoop]: Abstraction has 5528 states and 14598 transitions. [2021-06-05 20:26:47,739 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 20:26:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 14598 transitions. [2021-06-05 20:26:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:47,749 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:47,749 INFO L554 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 20:26:47,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 20:26:47,965 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:47,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1577309687, now seen corresponding path program 13 times [2021-06-05 20:26:47,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:47,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957378473] [2021-06-05 20:26:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:48,073 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 20:26:48,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:48,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957378473] [2021-06-05 20:26:48,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957378473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:48,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46876802] [2021-06-05 20:26:48,074 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 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 20:26:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:48,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 20:26:48,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:48,282 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 20:26:48,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46876802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:48,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:48,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 20:26:48,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627585803] [2021-06-05 20:26:48,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 20:26:48,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:48,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 20:26:48,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 20:26:48,284 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 20:26:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:48,485 INFO L93 Difference]: Finished difference Result 13071 states and 34969 transitions. [2021-06-05 20:26:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 20:26:48,485 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 20:26:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:48,502 INFO L225 Difference]: With dead ends: 13071 [2021-06-05 20:26:48,502 INFO L226 Difference]: Without dead ends: 12656 [2021-06-05 20:26:48,503 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:26:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-06-05 20:26:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 8025. [2021-06-05 20:26:48,676 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 20:26:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 21627 transitions. [2021-06-05 20:26:48,692 INFO L78 Accepts]: Start accepts. Automaton has 8025 states and 21627 transitions. Word has length 96 [2021-06-05 20:26:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:48,692 INFO L482 AbstractCegarLoop]: Abstraction has 8025 states and 21627 transitions. [2021-06-05 20:26:48,692 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 20:26:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8025 states and 21627 transitions. [2021-06-05 20:26:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 20:26:48,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:26:48,703 INFO L554 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 20:26:48,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 20:26:48,917 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:26:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:26:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash 698754679, now seen corresponding path program 14 times [2021-06-05 20:26:48,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:26:48,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601317115] [2021-06-05 20:26:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:26:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:26:49,029 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 20:26:49,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:26:49,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601317115] [2021-06-05 20:26:49,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601317115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:49,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830761153] [2021-06-05 20:26:49,030 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 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 20:26:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 20:26:49,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 20:26:49,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 20:26:49,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 20:26:49,249 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 20:26:49,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830761153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 20:26:49,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 20:26:49,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 20:26:49,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406591228] [2021-06-05 20:26:49,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 20:26:49,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:26:49,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 20:26:49,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 20:26:49,251 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 20:26:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:26:49,641 INFO L93 Difference]: Finished difference Result 25029 states and 67412 transitions. [2021-06-05 20:26:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 20:26:49,641 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 20:26:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:26:49,642 INFO L225 Difference]: With dead ends: 25029 [2021-06-05 20:26:49,642 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 20:26:49,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 253.2ms TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:26:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 20:26:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 20:26:49,642 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 20:26:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 20:26:49,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-06-05 20:26:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:26:49,643 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 20:26:49,643 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 20:26:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 20:26:49,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:26:49,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 20:26:49,867 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:26:49,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:26:49 BasicIcfg [2021-06-05 20:26:49,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:26:49,869 INFO L168 Benchmark]: Toolchain (without parser) took 18791.22 ms. Allocated memory was 335.5 MB in the beginning and 685.8 MB in the end (delta: 350.2 MB). Free memory was 297.8 MB in the beginning and 399.3 MB in the end (delta: -101.4 MB). Peak memory consumption was 250.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:49,869 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 335.5 MB. Free memory is still 316.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:26:49,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.27 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 319.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:49,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 335.5 MB. Free memory was 319.6 MB in the beginning and 317.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:49,870 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 ms. Allocated memory is still 335.5 MB. Free memory was 317.9 MB in the beginning and 316.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:26:49,870 INFO L168 Benchmark]: RCFGBuilder took 391.76 ms. Allocated memory is still 335.5 MB. Free memory was 316.6 MB in the beginning and 299.6 MB in the end (delta: 16.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:49,870 INFO L168 Benchmark]: TraceAbstraction took 18108.64 ms. Allocated memory was 335.5 MB in the beginning and 685.8 MB in the end (delta: 350.2 MB). Free memory was 298.6 MB in the beginning and 399.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 251.6 MB. Max. memory is 16.0 GB. [2021-06-05 20:26:49,870 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 335.5 MB. Free memory is still 316.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 219.27 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 319.6 MB in the end (delta: -21.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 335.5 MB. Free memory was 319.6 MB in the beginning and 317.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.51 ms. Allocated memory is still 335.5 MB. Free memory was 317.9 MB in the beginning and 316.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 391.76 ms. Allocated memory is still 335.5 MB. Free memory was 316.6 MB in the beginning and 299.6 MB in the end (delta: 16.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18108.64 ms. Allocated memory was 335.5 MB in the beginning and 685.8 MB in the end (delta: 350.2 MB). Free memory was 298.6 MB in the beginning and 399.3 MB in the end (delta: -100.7 MB). Peak memory consumption was 251.6 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 79 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18022.8ms, OverallIterations: 18, TraceHistogramMax: 5, EmptinessCheckTime: 183.5ms, AutomataDifference: 6465.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 45.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2812 SDtfs, 8045 SDslu, 14441 SDs, 0 SdLazy, 2786 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1369.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1837 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7732 ImplicationChecksByTransitivity, 4688.2ms 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: 1780.5ms AutomataMinimizationTime, 18 MinimizatonAttempts, 47580 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 193.3ms SsaConstructionTime, 648.5ms SatisfiabilityAnalysisTime, 4468.5ms InterpolantComputationTime, 2628 NumberOfCodeBlocks, 2624 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 2594 ConstructedInterpolants, 0 QuantifiedInterpolants, 5732 SizeOfPredicates, 138 NumberOfNonLiveVariables, 2266 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...